IQ3 Technical Manual 1.1 [PDF]

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LOMA IQ3 & IQ3+ Technical Manual Search Head and Controls



Contents



Amendment record



Loma Systems



Amendments



Amendment record Page No. 63 75



Amendment First Issue Checking transmitter winding for continuity/open circuit added. Ferrite phase angle checks at any frequency



Loma IQ3 technical manual



Issue 1 1.1



Date 31/01/2008 06/02/2008



1.1



06/02/2008



Page 2 of 75



Loma Systems



Contents



Contents 1



Loma group service centres



2



Cautionary advice



3



Control board



4



Display types



5



Transmitter board



6



Receiver board



7



P & Q channels explained



8



Trouble shooting



10



Control board flash programming



Loma IQ3 technical manual



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Loma Systems



Copyright



Copyright and acknowledgements Copyright © Loma Systems Ltd. All rights reserved. Loma Systems Limited. Summit Avenue Southwood Farnborough Hampshire GU14 0NY England Email: [email protected] Web:



http://www.loma-cintex.com



The IQ3 Metal Detector and this documentation is copyright material. No part of this documentation may be reproduced, transmitted, stored in a retrieval system, or translated into any language, or computer language in any form or by any means without the prior written permission of Spectrum Inspection Systems. IQ3 Metal Detector is a trademark of Loma Systems. All other product names are trademarks or registered trademarks of their respective owners. The information in this document is believed to be correct at the date of publication. However, our policy is one of continuous improvement and so the information in this document is subject to change without notice, and does not represent a commitment on the part of Loma Systems. Part number: Date:



814xxx issue 1 st 31 January 2008



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Loma Systems



Group service centres



Loma group service centres UK Customer Service Centre Loma Customer Services, Unit 43 Campus Road, Bradford, West Yorkshire, BD7 1HR, United Kingdom. Telephone: +44 (0) 1274 378200 Fax: +44 (0) 1274 729716 E-mail: [email protected]



Benelux, France, Germany Loma Systems BV, Panovenweg 22, 5708 HR, Helmond, Netherlands. Telephone: +31 (0) 492 573550 Fax: +31 (0) 492 573570 E-mail: [email protected]



USA and South America Loma International Inc., 283 East Lies Road, Carol Stream, Illinois 60188, USA. Telephone: 1-800-USA-LOMA / 1-630-588-0900 Fax: 1-630-588-1396 For parts E-mail: [email protected]



Canada Loma Canada Limited, 333 Wyecroft Road, Unit 2, Oakville, Ontario, L6K 2H2, Canada. Telephone: 1-800-387-7987 / 905- 842-4581Fax: 905-842-3460 For parts E-mail: [email protected]



Rest of the world Loma Customer Services, Unit 43 Campus Road, Bradford, West Yorkshire, BD7 1HR, United Kingdom. Telephone: +44 (0) 1274 378200 Fax: +44 (0) 1274 729716 E-mail: [email protected] For details of other Loma offices and the world-wide distributor network, please visit our web site at www.loma-cintex.com



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Group service centres



Cautionary advice Listed below are some basic safety warnings. It is strongly recommended that personnel who are, or will be, responsible for maintaining or operating the equipment described in this manual should read and understand these warnings.



1. Lethal hazard – electrical supplies. A current of 100 milli-amps passing through the body for one second can kill. This can occur at voltages as low as 35V ac or 50V dc. The equipment described in this manual uses electrical power which can be lethal. Unless absolutely necessary, cleaning, inspection and maintenance must not be carried out without first isolating the equipment from all electrical supplies.



2. Lethal hazard - compressed air supplies. The equipment described in this document may be supplied with a compressed air supply operating at a pressure that may be lethal. Unless absolutely necessary, cleaning, inspection and maintenance must not be carried out without first isolating the equipment from all compressed air supplies.



3. Working on equipment. If it is essential to work on the equipment with electrical and/or compressed air power connected. The work must be undertaken only by qualified personnel who are fully aware of the danger involved and who have taken adequate safety precautions to avoid contact with dangerous voltages and/or compressed air supplies. Before disconnecting the equipment from power, removing the power plug or loosening the power terminals ensure that signal cables to other equipment are disconnected first.



4. Reject devices. At no time, with compressed air and/or electrical power applied to an automatic reject device, should any part of the body be placed within the operating area of the reject device.



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Control Board



Quick Links Control Board Information



416329 picture 416265 picture Picture label descriptions Control board mounting Control board test points DC power rails AC power connection Relay switching specification and connections RN1 filter resistor Remote sensor board Remote sensor wiring diagram Serial link board Connecting to a serial link board About serial link types Hardware cold starting Control board replacement Configuring a new control board as an IQ3 or IQ3+ IQ3 menu maps 1 of 3 IQ3 initial configuration IQ3 setting up the ferrite memory Variable speed external clock link JP7 Variable speed transport CTB calculation IQ3+ menu maps 1 of 2 IQ3+ initial configuration IQ3+ setting up the ferrite memory DRY tune and default ferrite frequencies Frequency Banding Ferrite memory expected phase angles Setting up User Accounts IQ3+



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Control Board The IQ3 was launched with a specially modified IQ2 control board part number 416329 issue A. st From the 1 December 2007 this is being superseded with an IQ2/3 universal control board 416265 issue G & above.



416329 issue A board minus power supplies safety cover for clarity. Flash programme connector



Display connector



Battery back ram



JP8 JP6 JP7



Flash programming boot prom



Filter resistor pack



Transmit/Receiver cable connection



+/- 12v DC adjust JP10



Serial link board location (not shown)



Power rail monitor points Mains input earth point



mains input



Reject relay screen can



{JP11 voltage free relay connections}



Sensor board location (not shown)



Denotes board fixing points



Diagram 1



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416265 issue G board minus power supplies safety cover for clarity. This board and its pre programmed software IQ3V2.1.0 onwards replaces all previous boards fitted in an IQ3. For information this board can also be used in all models of IQ2 except the original Loma "Ferrous in st Foil" Detector. The use of this board in an IQ3 built prior to 1 December 2007 will require a change of transmitter/receiver to control board cable. Loma part number 516741.



Display connector



Battery back ram



Flash programme connector



JP302 JP6 JP7



Flash programming boot prom



Filter resistor pack



Transmit/Receiver cable connection for IQ3 only



Transmit/Receiver cable connection for IQ2 only



+/- 12v DC adjust



JP10



Serial link board location (not shown)



Power rail monitor points



Mains input earth point



Reject relay screen required but can not shown Sensor board location (not shown)



Denotes board fixing points



mains input



{JP11 voltage free relay connections}



Loma IQ3 technical manual



Diagram 2



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Control Board



To keep information simple only items that would be of functional value have been shown in Diagrams 1 & 2.



Picture labels explained (control boards) Label Display connector 416329 link JP8 416265 issue G onwards link JP302 JP8 & JP302 function JP303 (416265) JP10 (416329 & 416265) JP9 Flash programme connector JP6 JP7 Filter resistor pack Battery backed ram Flash programming boot prom 416329 transmit/receiver cable connection 416265 transmit/receiver cable connection +/- 12v DC adjust Power rail monitor points Mains input earth point Reject relay screen Serial link board Sensor board Mains input JP11 voltage free relay connections



Information Connects to either the vacuum fluorescent touch panel or IQ3+ touch screen display. From software IQ3V2.1.0 the link is read by the operating software then depending upon whether the link is fitted or out enables communication with IQ3 or IQ3+. F O I IQ3+ touch panel U IQ3 Vacuum Fluorescent T T Not fitted hung on one pin. 416329 fitted 416265 fitted pins 2 - 3 Fitted not used on IQ3. (balance check link for IQ2) POD connection for flash memory programming of operational software. Cold start link. Normal run position is across pins 2 - 3. Cold start is 1 - 2. Internal clock or external shaft encoder clock source link. Internal clock is position 2 - 3 for shaft encoder it is 1 - 2. All IQ3 detectors have a 1MΩ pack fitted. Detector and product set up data store. Enables flash programming functions. This is not the operating software. Connection to the transmitter and receiver boards. This board has dual connectors the 15way D type is for IQ3 whereas the 12 way 90º IDC is for an IQ2. Adjustment of the +12v and -12V DC rail voltages. See power supplies section. DC power rail monitor points. See power rail supplies section and test point information. Incoming mains control board earth point A 440c stainless steel relay screen can is fitted over the reject relay. Provides RS232, RS422 and 20mA communication. See external connections section of this manual. Provides external connection for photo eyes shaft encoder. See external connections section of this manual Incoming mains supply to the control board 85 to 265V 50/60 Hz. Provides voltage free connections for external functions such as a reject device. See external connections section of this manual.



Control board mounting The control board is mounted on a hinged drop down panel secured at the top by a 4mm screw. Very early IQ3 detectors may have the control board located to the back of the drop down front panel.



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Test point information Only test points of functional value are included in this table. Only the 416265 board actually has test point pins fitted. The earlier 416329 board has no actual pins fitted to the PCB. Board 416329 & 416265



416265 only



Test point TP6 TP7 TP8 TP9 TP1 TP15 TP16 TP17 TP18 TP19



Function P channel signal input to ADC Q channel signal input to ADC P (Vr) channel signal input from receiver board Q (Vx) channel signal input from receiver board AGND analogue ground (use for scope probe ground) +12V Ext (relay coil and sensor power rail) + 5V (logic power rail) +12v (main power rail) GND (power rail grounds) -12V (main power rail)



DC power rail information The main +12v DC and the +5V DC are continuously monitored as part of the on board fault monitoring function of the detector. In the unlikely event the rails go out of specification a “System fault” will be generated operating the "Fault relay". If via the fault relay an optional lamp is fitted then it will illuminate to give a visual warning. If the transport control circuit is connected via the fault relay the transport system will stop. Rails can be measured as follows.



Only the main +/- 12V rails can be adjusted.



416329 boards. Using the DMM set on the 20V range or equivalent measure the voltages at the links between JP305 and JP5 on the control board with respect to their own ground connection. The links are located underneath the Serial Link Board. If this board is fitted, it will need to be temporarily removed.



416265 issue G and above boards. Set the DMM as for the 416329 board but measure the rails on the test point provided all rails are referenced to GND (TP18). Primary Rail + 5V + 12V - 12V + 12V EXT



Nominal Voltage 5.00 12.00 12.00 12.00



Upper Tolerance 5.25 12.60 12.60 12.60



Lower Tolerance 4.85 11.80 11.80 11.80



Removal of the power supplies safety cover is required to gain access to RV1. REMOVAL OR REFITTING OF THE COVER MUST NEVER BE UNDERTAKEN WHEN THE DETECTOR IS POWERED.



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High voltages exist beneath this cover, therefore once removed care must be taken when adjustments are made. •



Adjustment can only be made to the +/- 12V rails using RV1 located in the power supply area of the control board.



•



If either rail is not present then protection fuse may be open circuit. The fuses are selfresetting. To reset turn the power to the detector off for about 10 seconds then power up and re check the rail.



•



Adjustment is carried out by connecting a DMM set on the 200V DC range with the positive probe connected to +12V and the other to -12V. RV1 is adjusted until the reading is 24V.



•



To ensure each rail is within its individual specification check each rail in turn with. Minor adjustment to RV1 may be required.



Mains connection (416329 & 416265 boards) The power requirement of the control board is a universal input from 85 - 265 volts AC @ 50/60Hz connected at JP308. The connector is a 4-way plug and socket arrangement. The connector has two live and 2 neutral terminals. The main detector earth connection is made to the M6 welded stud located on the bottom of the main case located along side the extreme right hand gland entry point (preferred mains input gland entry). An earth connection wire is already fitted that then connects to the control board mains earth pillar along side JP308. AC wiring colours will vary according to territory. North America Black 110/120v White Green/Yellow



= = =



HOT NEUTRAL EARTH



All Others 200/240v



= = =



LIVE NEUTRAL EARTH



Brown Blue Green/Yellow



A single protection fuse F1 (type T2A) Loma part number is 517033 located just above connector JP301 protects the incoming AC input located beneath the power supplies safety cover. If the fuse blows it may be replaced by the same type and rating. However should the fuse blow a second time then further replacement is not recommended, as the most likely cause is an internal power supply fault? Safety cover removal and refitting is as for access to DC rails.



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Relay connections (416329 & 416265 boards) The board has 4 x voltage free failsafe relays their switched ratings are: 5A @ 250 volts ac or 3A @ 30v dc resistive loads. OR 2A @ 250v ac or 2A @ 30v dc inductive loads. Relay Reject Fault Error Run



Contacts 2 x change over sets of contacts 2 x change over sets of contacts 1 x change over set of contacts 1 x change over set of contacts



Function Activates upon contaminant detection. Activates upon a fatal system fault. Activates upon a non-fatal run error. Activates as an "In run" indicator or can be a rd 3 set of reject contacts depending upon user option set up. Fuses F2 & F3 protect each of the reject relay contact sets. They are located beneath the power supplies safety cover either side of the reject relay. The fuse type is T5A, Loma part number 517026. Fuses may only be replaced by the same type and rating. Connections are made depending upon detector application, refer to your customised wiring diagrams in your user manual supplied with the detector. Contacts are shown are for relays when de-energised (failsafe). JP11 relay contacts Pin1



Reject relay 2 contact sets



Fault relay 2 contact sets



Error relay



Run relay



NC C NO NC C NO



NC C NO NC C NO



NC C NO NC C NO



Access to the relay connections requires the removal of a protection plate from the power supplies safety cover.



RN1 filter resistor pack (416329 & 416265 boards) All IQ3 and IQ3+ are fitted with a 1MΩ filter pack regardless of menu entered values.



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Remote sensor board {416244} fitted on (416329 & 416265 boards) The sensor board can be an optional fit, however most detectors are likely to have a board fitted as standard even if no remote sensors are in use. Connections provided are via TBA1. TBA1 1 2 3 4 5 6 7 8 9 10



Function + EXT - EXT Bin full PEC (Photo-eye) Reject Confirm Remote Calibrate + Shaft Encoder - Shaft Encoder + EXT - EXT



Mounted and secured on pillars Terminal 1



TBA1



The board locates into connectors JP3 and JP4 the board will only locate one way round.



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Control Board



Remote sensor information and wiring



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Serial link board {416246} fitted on (416329 & 416265 boards) A serial link board is an optional fit but will be required for all types of external communications including Ethernet based LomaNet, Online, OPC. LomaLink, and RS485 LomaNet and Online (blue) module based systems. The board locates into connector JP1 the board will only locate one way round. When an IQ3+ touch panel is fitted the available Logs can be saved to a USB stick as well as sent as a report. If only a USB stick is used then the serial link package is not required. Serial link board configuration



JP2 JP4 1-2 3-4 5-6



JP1 1-2 3-4 5-6



JP5 1-2 3-4 5-6



LK1 A B C D E



Mounted and secured on pillars



LK2 A B C D E



Serial link type and external connection information Link RS232 RS422 20mA



JP4 RXD 1-2 3-4 5-6



LK1 TX LK2 RX LK1 TX LK2 RX



Communications selection links JP1 TXD 1-2 3-4 5-6



20mA Configuration setting details 20mA Link Detector Active A B C IN OUT IN IN OUT IN 20mA Link Detector Passive OUT IN OUT OUT IN OUT



JP5 Power 1-2 3-4 5-6



D OUT OUT



E IN IN



IN IN



OUT OUT



The following chart details the connections available from the 14 way IDC connector JP1 included is the wiring termination into the standard 16 way chassis connector and cable assembly. Loma part number 516517 if fitted.



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Loma Systems JP2 Header Connector Pin Function 1 Rx loop + 2 Tx loop 3 Rx loop 4 Tx loop + 5 Rx _422+ 6 Rx_4227 Tx_422+ 8 Tx_4229 Gnd 10 Gnd 11 Cts_232 12 Rts_232 13 Tx_232 14 Rx_232



Control Board



RS232



Link Type RS422



RX+ RXTX+ TXGND GND CTS RTS TX RX



20mA RX+ TXRXTX+



16 Way Connector Pin Colour 14 Orange 11 Grey 3 White 13 Brown 5 Violet 6 Black 7 Pink 8 Yellow 9 Green 10 Green 2 White 12 Yellow 4 Red 1 Blue



Serial link information The serial link menu position operates in conjunction with the serial link board that supports a single RS232 (hardware handshaking), RS422 and 20mA current loop (software handshaking Xon-Xoff). Handshaking is the method by which the source device and the receiving device control the flow of data. Only one system may be used at any time, system selection is by fitting a combination of links in JP1, JP4 & JP5 found on the optional board. If the 20mA current loop system is chosen then further links are required in LK1 & 2. The detector can be configured to run Reports or LomaLink, using the link type chosen. Following is a guide to their usage and information on how to configure the hardware aspect of the links. For information on setting the drive protocols required please refer to your User Manual supplied with your detector. If the link is used to drive LomaLink then reference to the Serial Communications Handbook Loma is required to enable the correct interface protocol to be written. This can be emailed to you upon request. RS232 for devices no more than 25 metres (82 feet) from the detector. The link is a 5-wire system supporting hardware handshaking. If the detector has an Ethernet or LomaNet module fitted then it will be driven by this link. Remote printer If the link is to be used with a remote printer it must be mounted to the detector conveyor system and grounded to the detector control box. If the environment in which the printer is to be fitted is hostile, then some form of environmental protection will be required for the chosen printer. The link will only support simple dot matrix type printers such as the Epson LX range, but can be used with single sheet feeder attachments. Most printers have a parallel interface as standard, which is not compatible; the chosen printer must have an optional RS232 serial interface supporting hardware handshaking fitted.



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RS422 for devices no more than 1000 metres (1093 yards) from the detector. The link is a 4-wire system supporting software handshaking. This link cannot support Ethernet or LomaNet (blue) modules. 20mA current loop The link is a 4-wire system supporting software handshaking. The board has user configurable links LK1 & 2 depending upon whether the detector is to be the active or passive device, the recommended setting is to make the detector “active” and the device “passive”. This link cannot support Ethernet or LomaNet (blue) modules.



Hardware cold starting Performing a cold start erases all stored set up and product data and returns to set up default values. Once completed the detector will require re-configuring as described in "configuring a new control board as an IQ3 or IQ3+". To force a hardware cold start the following sequence of events must be followed. Switch off the detector power. Fit link 1-2 on JP6. Switch on the detector power. The display will show + Not detecting + Power down. Remove the link. Power up. Re-configure the detector menus. If the link is not removed then a warning message + Warning JP6 + will be displayed and exit from the “Configuration” menu will be denied until the link is removed.



Control board replacement The 416329 board has been replaced by the new 416265 issue G and it is therefore likely that the 416265 issue G (or above) will be used as a spare part for replacement 416329's. In this case if the board to be replaced is a 416329, then a new transmitter/receiver cable will be required in order to connect using the 15way D type. The cable part number is 516741. Connection cannot be made using the 90° IDC connector. Drop down the front panel and release the control board hinged plate to gain access. Note some very early IQ3 detectors may have the control board located on the rear of the front panel. The board is secured using a combination of M3 nuts, washers and pillars. Ensure the fixings are replaced in the positions that they were removed from when refitting. The method of removal is to firstly power down the detector, then remove the power supplies safety cover and place to one side. There is no need to remove the covers earth connection. Disconnect all electrical connections. Where connections are made via the orange connectors these simply unplug therefore there should be no need to remove wires. It is advised to note the connector positions prior to removal to aid refitting. If the board is fitted with a remote sensor board or a serial link board with or without an Ethernet or LomaNet (blue) module, these will have to be removed.



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Remove the filter resistor pack RN1 as this will be required for the new board. Check and record the position of JP7 and JP8 (416329) or JP302 (416265), as they will require fitting in the same positions on the new board. Undo all the mechanical board fixings as shown by blue circles on either of the control board pictures earlier in this manual. Remove the board. Refitting is the reverse of removal. Ensure all removed items are replaced correctly. Before applying power to the detector set link JP6 to the cold start position pin 1 - 2. Power up if the detector is an IQ3+ the "cold start configuration" menu will be displayed. If it is a vacuum fluorescent display +Not detecting+ will be displayed. Replace JP6 into the normal run position pin 2 - 3 before continuing.



Configuring a new control board as an IQ3 or IQ3+ To aid navigation menu maps for IQ3 and IQ3+ follow. Instructions are located after the respective maps.



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Control Board *T ----



IQ3 User Menu 1 of 3



Sig ----



▓▓▓▓ Reject count No.



Continued on



Setup



Change No.



----



Name



Name



Product setup



Keycodes



Report options



Calendar



Machine details



* Product no



* Keyboard lock



* Form feed



* Year



*Machine



* Name



* Change



* All reports



* Month



IQ3x.x.x



* Dry product



* Results



* Error reports



* Day



* Metal Film



* PV test



* Fault reports



* Date



* Rej delay



* Setup reports



* Hours



* Rej dwell



* Contam report



* Minutes



Disable reject ?



PV test setup



* Test type



* Setup report?



* Timing * Test window



Service see sheet 3



Flash chksum = yyyy



* Learn reports * Status reports



* PV test reports



* No of passes



* Batch reports



* Fe size



* Printer type



* NFe size * ST size



* False thresh



Loma IQ3 technical manual



Menu map is current with IQ3V2.1.0 onwards. Previous issues of software may not exhibit all menu functions. Available menus will vary according to how the detector is configured for use.



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Control Board T * ----



IQ3 User Menu 2 of 3



Sig ----



▓▓▓▓ Reject count No.



Change



Setup



----



Name



Results



Learn



Update Learn?



Running product



Full Learn?



Product ----------



Setup Learn?



* Auto Frequency



* Frequency



Reset batch ?



* Min Threshold



Status report ?



* Max threshold



Run PV test ?



Threshold



Contaminants



Phase angle



Run errors



View errors ?



System faults



Error report ?



* Phase Unlocked



Loma IQ3 technical manual



Reject count -----



View contaminants ?



Contaminant report ?



Clear contaminants ?



* Head drive



Clear errors ?



*Head P gain



View faults ?



* Head Q gain



Fault report ?



* Head gain Unlocked



Clear faults ?



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Control Board Service code = 76



User options



Reject options



Serial links



* Tracker



* Mode



Link 1



* Reject time



* Reject relay



Configuration



Loma menu



* Usage



+Not detecting+



Run Current



* Baud rate



* Language



Restore drive? Working mode



* Setup learn



* Reject timing



* Data bits



* Type



* Access ferrite



* Confirmation



* Stop bits



* Head



Diagnostics Compensation Service View service log? Clear fault log?



* Reject out of run



* Conf delay



* Parity



* Band



Clear service log? Copy prod 1?



* Learn trigger



* Conf window



* Aux relay



* Bin full



* Flow control



* Default Update * Units



* PV test * PEC fault * Fault on PV



* Reverse mode



ADC setup menu



ADC type



* Dbug system



P signal



* Photo eye



* Coil gap



Exit path followed depends upon speed mode entry



IQ3 Service Menu 3 of 3



* Dbug mask * PEC length



ADC P offset (sign) Q signal ADC P offset (value)



* Filter resist



* Speed mode



* CTB constant



* Belt speed



* Log speed prob



ADC Q offset (sign) * Frequency



ADC Q offset (value) *DSP



* Drive on



Loma IQ3 technical manual



Drive off



* Tolerance



* Gain



Drive



* Learn cycle



* Normal drive



Restore Drive?



Auto learn limits



* Film drive



Auto Configure?



Drive settings



* Threshold



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Initial Configuration When first powered the software will default to an IQ2. This will create and OSGO out of specification system fault that will clear once IQ3 has been selected. When set to IQ3 a Drive to low system fault will be created this again will clear once the drive settings have been configured. Menu * Language * Type * Head Band



Default



* Units * Photo eye PEC fault Coil gap PEC length Filter resist Speed mode Speed CTB constant Log speed probs? * DSP * Tolerance * Learn cycle Auto learn limits



Drive Settings Auto configure



3



Service/Configuration Menu Setup Select from the available list Select system type from the available list Set to IQ3 The selection is either OFF or a 1-10 setting. There are 10 Bands each having 7 frequencies. (no band has the same frequencies) Where multiple heads are installed select each head to be on a different band so that there is no frequency cross talk. OFF means that the machine has 70 possible frequencies that can be manually set. Default setting is OFF Default frequency setting. This allows the detector to default to a set frequency within the band that has been selected. See the table at the end of this document. Auto frequency full learn cycle commences with this frequency. Select required units of operation from available list Select if a product registration eye is used Select required option from the available list The coil gap entry is set as 0.6 x the minimum aperture dimension the coil gap is recorded on the detector serial plate Length is distance from the eye to the side of the case + 0.5 x case depth + 0.5 x coil gap. All detectors use a single fixed value of 1M ohm. The entry set in this menu is selected according to the actual conveyor speed required. Take the resistor pack from the original board and fit to the new board. Fixed, variable or Freerun. Selection determines associated speed menus that follow Enter actual transport speed (fixed speed transports) Enter value calculated (variable speed transports) Recommended to say NO NO is the normal setting (Freerun only) Select required setting from the available list (LOW) is the normal setting. Select required setting from the available list. Short is the normal for nonPEC systems and 8 for PEC systems. Only apply if within the Setup learn menu Auto frequency is selected. The menu only needs to be entered if the default values are to be changed. * Gain MAX * Normal drive HIGH * Film drive LOW * Threshold 2000 Within this menu the transmitter drives for each of the detectors 70 frequencies can be reviewed and set up. It is not recommended to set drives manually but to use the Auto configure? option. This automatically configures the correct drive 'On' & 'Off' times. Select and press the Enter key to commence set up. This can take approximately 10 minutes to complete. When completed the Auto configure menu is displayed again. Press the Cancel key to exit.



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Next Set up the ADC setup menu. Service/Loma Menu/ADC setup menu The ADC setup menu positions allow the quiescent signal level to be monitored and then adjusted to move symmetrically about 0v.



ADC P & Q offset adjustments



Monitor the P channels signal, the numbers will be continually moving. Observe the numbers and their sign to determine if the average movement is symmetrical about 0 or if it is biased in a negative or positive direction. If the direction is biased one way step down to the P channel sign menu and select the opposite sign, then step down to the P channel value menu and enter a number. Review its effect in the P channel signal menu. Repeat steps until the signal is as symmetrical as can be obtained. Repeat this process for the Q channel but using the Q channel menus.



Set up the remaining Service menus according to the detector system requirements.



Setting up the Ferrite memory Ferrite memory operating frequency You will need to recalibrate ferrite memory at whatever frequency it was set at on the board that is being replaced. So make sure you know what it was before removing the board. If you do not know then look at TABLE 1: DRY Tune and Default Ferrite Frequencies. Use the ferrite wand supplied with the detector to achieve this. Disable access when completed. Note: All product information will have to be re-entered and product/s learnt again. All timing data will also have to be re-entered.



Variable speed transport CTB calculation This parameter is the number of pulses (ticks) per metre/foot of belt travel. To calculate this figure for entry into the “*CTB constant” menu position, use either the metric or imperial formula following: Metric systems: CTB



=



Encoder pulses per revolution x 1000 πd



Where: d = the diameter of the roller to which the encoder is fitted in millimetres. Imperial systems: CTB



=



Encoder pulses per revolution x 12 πd



Where: d = the diameter of the roller to which the encoder is fitted in inches.



3



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Loma Systems Smallest Aperture Dimension mm 75 - 125 150 - 200 225 - 300 325 - 400 425 - 500 525 - 550



Control Board



Freq1 kHz Band 1



Freq2 kHz Band 2



TABLE 1 DRY Tune and Default Ferrite Frequencies Freq3 kHz Freq4 kHz Freq5 kHz Freq6 kHz Freq7 kHz Band 3 Band 4 Band 5 Band 6 Band 7



Freq8 kHz Band 8



Freq9 kHz Band 9



Freq10 kHz Band 10



405 300 203 111 111 111



416 319 208 115 115 115



428 326 211 121 121 121



517 365 242 146 146 146



535 375 250 151 151 151



555 384 254 156 156 156



441 333 217 126 126 126



454 340 223 131 131 131



468 348 231 136 136 136



500 357 238 141 141 141



INSTRUCTIONS Multiple orders for the same company should have a different band selected from which the Dry ferrite and Default frequency will be chosen in order to prevent cross talk between units. The criteria for selecting the Dry ferrite tune and Default frequency for will be as follows: Both frequencies are selected from Table 1 according the aperture dimension and the set frequency band. Example 1: I have a head whose smallest aperture dimension is 200mm and the set band is 2. Therefore a dry operating and default frequency of 319kHz will be used.



Table is extracted from Technical Note TN00215 available on the Knowledge base.



Loma IQ3 technical manual



Page 25 of 75



Loma Systems



Control Board



Access level colour key



No.



Basic Level (1)



Change Running Product



Name Reject



Reset batch?



Adjust Threshold



Operator Level (2)



Run PVS? SIG



Supervisor Level (3)



IQ3+ User Menu 1 of 2



Accept



PVS



Machine Status Info Engineer Level (4)



Search Head Setup Detector Mimic Screen Select Product to Set-up Product Options



System Settings see sheet 2



Machine Type ▼ Units ▼



Enter Run?



Head Type ▼ Edit



Update



Name ◄►



Full



Reject delay ◄►



Learn



Conveyor Setup



Serial Comms Setup



Logs/Reports



Rejects Setup



PEC Enable 9



* Usage ▼



System Faults Log



Disable Rejects 9



Band ▼



Speed Mode ▼



Set up



Belt Speed ◄► Reject Dwell ◄►



Auto frequency 9



View Log? * Baud rate ▼ Clear Log? * Data bits ▼ Print Log?



PEC Length ◄►



Frequency ▼



* Stop bits ▼



Dry Product 9 Min Threshold ◄► Metal Film 9



Run Errors Log



CTB Constant ◄►



Max Threshold ◄►



Log speed prob. 9



* Parity ▼



Clear fault? System & run only



* Flow control ▼



Non-fe test ◄►



S. steel test ◄► Head Drive ▼ False Threshold ◄►



Head P Gain ▼



PVS Log



PVS reports



Batch Log



Batch report



Coil Gap ◄► Relay ▼



Filter Resistance



Timing ▼



Tolerance ▼



Reject Delay ◄►



Learn Cycle ▼



Reject Dwell ◄►



Send to USB?



Machine ID ◄►



Bin full 9



IQ Version XXX



Confirmation 9



UIF Version XXX



Confirm delay ◄►



Flash Checksun XXXX



Confirm window ◄►



Update Checksum 9



Setup report DSP Enable 9



Phase Angle ◄► Phase Lock 9



Contaminant report



Default ▼



Mode ▼



Diagnostics Log



Threshold ◄►



Fe test ◄►



Contaminants Log



Error report



The menu combination depends upon what speed mode is selected



Head Q Gain ▼ Head Lock 9



Loma IQ3 technical manual



Learn report Print Status report



Menu styles Drop down list ▼ Tick box 9 Dialogue box ◄► Save settings Cancel X Accept 9



Configuration report



Menu map is current with IQ3V2.1.0 onwards. Previous issues of software may not exhibit all menu functions. Available menus will vary according to how the detector is configured for use.



Page 26 of 75



Loma Systems



Control Board



IQ3+ User Menu 2 of 2 Calendar



User options



Report options



Date



Tracker 9



All 9



Time



Learn Setup 9



Batch Units ▼



Access Ferrite 9



Batch packs ◄►



Reject out of Run 9



Batch start ◄►



Aux relay ▼



Batch length ◄►



System Settings



Search Head Setup



Loma Service



VF Drive



PVS setup



Machine Type ▼



Run current



Frequency ▼



Test type ▼



Units ▼



Restore drive 9



Drive On ◄►



Timing timing ▼



Head Type ▼



Working mode ▼



Drive Off



Interval ◄►



Access



*Basic *Operator *Supervisor *Engineer



Compensation xxx



Drive Current



Synchronisation ◄►



Default ▼



Type (refers to ADC)



Auto Configure? 9



No. of Passes ◄►



Coil Gap ◄►



P signal xxx



Restore drive? 9



Window ◄►



Filter Resistance



Q signal xxx



Tolerance ▼



P offset ◄►



Learn Cycle ▼



Q offset ◄►



Machine ID ◄►



Dbug system ▼



IQ Version XXX



Dbug mask ◄►



Prefix ◄►



UIF Version XXX



Copy Product 1? 9



Code ◄►



Flash Checksun XXXX



Background



Update Checksum 9



Startup Logo



Form feed 9



Fault on PVS 9



Printer type ▼



Language



English French German Spanish Dutch



Traceability codes 9



Auto learn limits



Add Account



Gain ▼



Edit Account



Normal Drive ▼



Delete



Metal Film Drive ▼



To enter a higher access level user access ID's and passwords must be setup



Band ▼



PVS 9



User



Threshold ◄►



Appearance



Software Upgrade



Dials Minor Sector



This function allows an upgrade to the IQ3+ touch screen software via a USB port only. It will only function with IQGUIV1.2.0 or greater.



Dials Major Sector Buttons



Restore Defaults 9



Menu styles Drop down list ▼ Tick box 9 Dialogue box ◄► Menu map is current with IQ3V2.1.0 onwards. Previous issues of software may not exhibit all menu functions. Available menus will vary according to how the detector is configured for use.



Loma IQ3 technical manual



Save settings Cancel X Accept 9



The appearance menu can be used to customise the look of the detector's main run screen via colour palettes. A customer specific logo can also be selected via a browse panel



Page 27 of 75



Loma Systems



Control Board



IQ3+ Initial Configuration When first powered the software will default to an IQ2. This will create and OSGO out of specification system fault that will clear once IQ3 has been selected. When set to IQ3 a Drive to low system fault will be created this again will clear once the drive settings have been configured. Both these faults will appear in the System fault log. When an IQ3+ has been cold started a one off "Cold Start Configuration" menu is displayed. This screen group together some basic search head set up functions to enable easier configuration. Once the screen has been exited it will not be seen again unless a further cold start is performed. The menus are all still accessible but have reverted to their normal run positions. To fully complete a set up the access level must be at Engineer. Cold Start Configuration Menu Setup Select system type from the available list Select required units of operation from available list Set to IQ3 The selection is either OFF or a 1-10 setting. There are 10 Bands each having 7 frequencies. (no band has the same frequencies) Where multiple heads are installed select each head to be on a different band so that there is no frequency cross talk. OFF means that the machine has 70 possible frequencies that can be manually set. Default setting is OFF Default ▼ Default frequency setting. This allows the detector to default to a set frequency within the band that has been selected. See the table at the end of this document. Auto frequency full learn cycle commences with this frequency. Coil Gap ◄► The coil gap entry is set as 0.6 x the minimum aperture dimension the coil gap is recorded on the detector serial plate Filter Resistance ▼ All detectors use a single fixed value of 1M ohm. The entry set in this menu is selected according to the actual conveyor speed required. Take the resistor pack from the original board and fit to the new board. Tolerance ▼ Select required setting from the available list (LOW) is the normal setting. Learn Cycle ▼ Select required setting from the available list. Short is the normal for nonPEC systems and 8 for PEC systems. PEC Enable 9 Select if a product registration eye is used. Speed Mode ▼ Fixed, variable or Freerun. Selection determines associated speed menus that follow The remaining entries depend upon how the detector has been configured Belt Speed ◄► Enter actual transport speed (fixed speed transports) PEC Length ◄► Length is distance from the eye to the side of the case + 0.5 x case depth + 0.5 x coil gap. CTB Constant ◄► Enter value calculated (variable speed transports) Log speed prob. 9 Recommended to remain Un-ticked. DSP Enable 9 Un-ticked is the normal setting (Freerun only) Menu Machine Type ▼ Units ▼ Head Type ▼ Band ▼



Once completed the screen can be exited. If JP6 has not been removed the screen cannot be exited. A save setup command is not requested.



Loma IQ3 technical manual



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Loma Systems



Control Board



Now setup the transmitter drives from the VF Drive Icon. Menu VF Drive Auto Configure? 9



Setup Within this menu the transmitter drives for each of the detectors 70 frequencies can be reviewed and set up. It is not recommended to set drives manually but to use the Auto configure option. This automatically configures the correct drive 'On' & 'Off' times. Select and press the Enter key to commence set up. This can take approximately 10 minutes to complete. When completed the Auto configure menu is displayed again. Press the key in the banner bar to exit.



Next Set up the ADC setup menu from the Loma Service icon. Menu



Loma Service



Setup ADC P & Q offset adjustments The ADC setup menu positions allow the quiescent signal level to be monitored and then adjusted to move symmetrically about 0v. Monitor the P channels signal, the numbers will be continually moving. Observe the numbers and their sign to determine if the average movement is symmetrical about 0 or if it is biased in a negative or positive direction. If the direction is biased one way step down to P offset ◄► menu and select the opposite sign and enter a number. Review its effect in the P channel signal menu. Repeat steps until the signal is as symmetrical as can be obtained. Repeat this process for the Q channel but using the Q channel menus.



Set up the remaining Service menus according to the detector system requirements.



Setting up the Ferrite memory Ferrite memory operating frequency You will need to recalibrate ferrite memory at whatever frequency it was set at on the board that is being replaced. So make sure you know what it was before removing the board. If you do not know then look at TABLE 1: DRY Tune and Default Ferrite Frequencies. Use the ferrite wand supplied with the detector to achieve this. Disable access when completed. Note: All product information will have to be re-entered and product/s learnt again. All timing data will also have to be re-entered.



Setting up User Accounts IQ3+ From touch screen software IQGUIV1.1.1: When the detector is powered off then on the access level defaults to the lowest level 1 (Basic). Level 1 inhibits access to all set up functions. Should power be removed prior to completing set up an initial Engineer level user name IQ with a password 3142 is provided in the software? Information on the code is available to customers from the associated help screen. If user accounts are to be used. It is strongly recommended that this code be deleted or alternatively edited. The initial code is in addition to the normal master password. All master passwords can be found in Technical Note TN00107 available from the Loma Knowledge Base.



Loma IQ3 technical manual



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Loma Systems



Control Board



Ferrite memory expected phase angles A table follows detailing expected ferrite phase angles for a correctly working detector.



Frequency kHz



Phase angle degrees



P or Q mode



31 26.0 33 32.7 35 36.0 37 39.9 39 44.1 45 degree mode change point 41 46.3 43 46.7 46 48.7 48 50.6 52 51.3 71 63.8 73 64.8 75 65.4 77 66.3 79 66.6 81 67.9 83 68.5 85 70.0 87 70.5 89 71.0 111 78.4 115 79.4 121 80.9 126 82.5 131 83.7 136 84.6 141 86.4 146 87.6 151 88.7 156 203 -83.3 208 -82.5 211 -81.6 217 -79.1 223 -77.1 231 -74.2 238 -72.9 242 -71.0 250 -70.1 254 -69.2 300 -59.4 319 -54.7 326 -53.8 333 -52.6



Loma IQ3 technical manual



Q Q Q Q Q P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P



Frequency kHz



Phase angle degrees



P or Q mode



340 -50.9 P 348 -49.7 P 357 -48.9 P 365 -46.0 P 375 -45.4 P -45 degree mode change point 384 -43.6 Q 405 -40.4 Q 416 -39.1 Q 428 -36.9 Q 441 -34.2 Q 454 -31.1 Q 468 -28.1 Q 500 -18.6 Q 517 -15.2 Q 535 -17.8 Q 555 -16.5 Q 576 -14.4 Q 600 -10.6 Q 625 -7.1 Q 652 681 714 5.0 Q 750 10.1 Q 789 15.2 Q 833 20.5 Q 882 28.0 Q Could not get a ferrite learn at this frequency = 0°. P channel gave approx. 2v p-p whilst Q channel was no signal possible change to learn algorithm required. Could not get a ferrite learn at this frequency = 90°. Q channel gave approx. 5v p-p whilst P channel was no signal possible change to learn algorithm required.



Page 30 of 75



Loma Systems



Control Board



Frequency Banding Both for the benefit of easier auto frequency selection and the ability to run adjacent metal detectors without cross talk. The 70 individual frequencies have been banded into 10 bands of 7 frequencies per band. No two bands contain the same frequencies.



Loma IQ3 technical manual



Page 31 of 75



Loma Systems



IQ3 & IQ3+ Displays



Quick Links Display type options



One line vacuum fluorescent display Two line vacuum fluorescent display IQ3+ touch screen Display type and software compatibility information Interchanging vacuum fluorescent display types Vacuum fluorescent display assembly detail IQ3+ touch panel display Touch panel component picture Touch panel picture components key Removal of boards Power supply assembly picture Power supply removal Software programming IQ3 control board software Upgrading IQ3+ operating software prior to IQGUIV1.2.0 Upgrading IQ3+ operating software post IQGUIV1.2.0 Touch screen calibration Spare parts list Remote controls



Loma IQ3 technical manual



Page 32 of 75



Loma Systems



IQ3 & IQ3+ Displays



There are 3 types of display systems available for IQ3 detectors these are: 1.



419205 - The original one line vacuum fluorescent display plus touch panel assembly.



2. 419270 - The Mandarin two line vacuum fluorescent display plus touch panel assembly.



3.



The IQ3+ touch screen display assembly (Graphical User Interface {GUI}).



Inspecting Ok…



Loma IQ3 technical manual



Page 33 of 75



Loma Systems



IQ3 & IQ3+ Displays



Display type and software compatibility information



Display 419205



419270 Touch screen



Display



Touch screen



Control Board Software All versions



From IQ3V2.0.2 onwards From IQ3V2.0.0 onwards Touch screen software IQGUIV1.0.2 onwards IQGUIV1.1.0 IQGUIV1.0.2 to IQGUIV1.1.1 IQGUIV1.2.0



Functional Information



Comments



This display will work with all issued versions of IQ3 software and is compatible with the following languages, English, French, German, Spanish, Portuguese, Dutch and Katakana. Mandarin is unsupported on this display. This display will only work with software from V2.0.2 onwards. It is the first version to support Mandarin characters as well as English, French, German, Spanish, Portuguese, Dutch and Katakana. This software is the first production release version to support either vacuum fluorescent or touch screen display types.



From software IQ3V2.0.0 onwards, display type (touch screen or vacuum fluorescent) selection link must be correctly fitted for the display in use. See control board section "picture labels" for link details. This software is able to determine which type of vacuum fluorescent display is fitted. If it detects the 419205 display then Mandarin will not be available. For language support on the touch screen see table below.



Functional Information



Comments



Touch screen software is not compatible with all control board software releases. Introduced the USB function None of these versions will support any language other than English.



Control board software prior to IQ3V2.0.0 will not support a touch screen.



Added new means of upgrading future IQGUI releases from within the software without having to stop program and navigate through windows explorer to manually add new files. Future releases to be distributed as one IQGUIvxxx.ARM.CAB file instead of iq3_gui folder containing several files, where xxx is the version number.



Touch screen software now easily upgraded from this version using a USB memory stick and the Systems settings\Upgrade icon.



Loma IQ3 technical manual



Page 34 of 75



Loma Systems



IQ3 & IQ3+ Displays



Interchanging vacuum fluorescent display types 419205 & 419270 As can be seen from the display pictures the cut out for the actual glass is of a different size depending upon the panel type. This means that should a change from one type to the other be required then the touch panel (metal work) would also have to change.



Vacuum fluorescent display assembly detail



Display board Front panel



Overlay



These items form part of the overlay



Ribbon cable is part of the PCB



Apply approximately 5mm clear silicon rubber in a continuous bead, around the centre line of the overlay fixing holes before fitting to the control panel.



Touch panel display IQ3 detectors fitted with vacuum fluorescent displays can be easily changed to a touch panel system. However due notice must be taken of software compatibility as described in the tables above. It is therefore highly recommended to reprogram the control board software to the latest release when changing. This will avoid any unnecessary issues of compatibility between control and IQ3GUI software. The next section covers the touch panel in more detail.



Loma IQ3 technical manual



Page 35 of 75



Loma Systems



IQ3 & IQ3+ Displays



Touch panel components



B



A



D



C



E



G



F



H



J L K W



M



N



P



O



R



3



Loma IQ technical manual



S



T



Q



V



Page 36 of 75



Loma Systems Identifier A B C D E F G H



Title



J K L M N



CN2 & 3 CN1 BT1 J13 LK1 LK3,4 & 5



J4 J2 J10 J20



P Q R



out in in in out out J14 LK2 J15



S



J16



T V W



J17 J18 LED's



O



3 4 5 3 4 5



IQ3 & IQ3+ Displays Panel detail explained Description Inverter board supplies high voltage power to display screen +12v & 0V connection to inverter board screen power Incoming +12v , +5V & 0V supplies from main power supply PC board Motherboard supports functionality of the PC board. Touch screen Display drive (mounted on rear of motherboard) + Flash card socket (currently used to load IQ3 operating software) High voltage power to screen DC supply to inverter board BIOS battery for PC board (not currently used) PC board operating system programming port PC board watchdog link (not currently fitted) Link settings define whether J13 operating system programming port or second PC board USB port is activated. The options are mutually exclusive. Default setting second USB port from (J15) activated



Programming port (J13) activated. Software use only. Ethernet port Battery power connection link (not currently fitted) 2 x USB ports one is permanently activated the second is optional. Default is both activated RS 485 ribbon cable connection to IQ3 control board display connector JS2 Hardware hand shaking RS232 port (not currently used) Software hand shaking RS232 port (not currently used) 2 x LED the one nearest the edge of the board is ON indicating 5V power the one next to is flickers indicating the PC board is running.



Removal of boards The inverter board is held in place by 4 off M3 threaded pillars. The PC board simply unplugs from the motherboard. The motherboard is held by 4 off M3 threaded pillars.



Loma IQ3 technical manual



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Loma Systems



IQ3 & IQ3+ Displays



Power supply assembly



C



Slide



A



D



Lift



B



3



Loma IQ technical manual



Page 38 of 75



Loma Systems Identifier A



B C D



IQ3 & IQ3+ Displays



Power supply detail explained Description Connects to mains power connector JP301 on IQ3 main control board. Ground connection is from the right hand gland main stud located in the bottom of the search head case. DC power +12v, 5V & 0V outputs +12V DC fuse Connects to J2 fuse rating 20mm 1A antisurge +5V DC fuse Connects to J2 fuse rating 20mm 2A antisurge Title AC power



NOTE: The power supply mains input voltage is 85 to 265V 50/60Hz. A small safety cover protects the mains supply connection terminals.



Removal of power supply To release the lower supply module from the DIN rail mounting slide the module in the direction of the arrow (it is fairly stiff), then lift up from the edge furthest away from you to release.



Loma IQ3 technical manual



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Loma Systems



IQ3 & IQ3+ Displays



Software programming It should be noted that the IQ3 operating software loaded on to the main control board must + be compatible with the IQ3 operating software loaded on to the PC board.



Method +



It is advisable to always programme the IQ3 control board before the IQ3 PC.



IQ3 operating software as loaded into the IQ3 control board Software is loaded in the same manner as if it were an IQ2/3 single line display. Therefore a programming pod and a PC with the Engineers service panel utility (V1.12.6) loaded is required. Because the IQ3+ touch screen assembly does not support the messages such as IQ2 boot + EPROM and block counting etc. Remove the IQ3 connection from the control board display connector and replace it with a temporary single line display then the normal messages and programme progress will be supported. Link JP8 on modified 416329 boards is removed for use with a single line display and fitted when using the GUI interface. For details on modification to include the JP8 link for early boards that did not support this feature refer to Technical Note TN00221 found on the Loma Knowledge base. Link JP302 on the 416265 issue G onwards board is removed for use with a single line display and fitted when using the GUI interface. Note: Link JP303 on the 416265 issue G onwards board is not used at this time its position can be ignored.



JP8 display link



JP302 display link



Please refer to the rear of this manual for comprehensive information on programming an IQ3 control board. +



Once completed the single line display can be replaced with the IQ3 . Remember to refit the display link.



Upgrading IQ3+ operating software prior to IQGUIV1.2.0 The instructions are for a software upgrade of an existing system. ¾ ¾ ¾ ¾



Power down unit. Release 6 off M4 captive cap head screws and drop down front panel until it hangs by its fixed hinge mounts. A 4mm Allen key is required. Insert a USB keyboard into the detector USB socket. Power up the detector. When powered, using the keyboard windows key bring up the start menu then select programs/windows explorer. This will bring up the My device page.



Loma IQ3 technical manual



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Loma Systems



IQ3 & IQ3+ Displays



Open the FFDISK folder (double tap) then the StartUp folder. Delete the IQ3 plus short cut. This will stop the iq3_GUI programme from running to enable an upgrade of the iq3_GUI programme to be done. Remove the keyboard. ¾ Power down then power up detector. The screen will have two icons open My device. ¾ Insert the USB stick containing the software to be used into the detector USB socket. ¾ My device will read the USB stick and display it as a folder (Hard Disk). ¾ Open and browse the USB stick if required to locate the new software it is in a folder named (iq3_GUI) single tap to highlight then copy the complete folder using Edit/Copy commands from the menu bar. ¾ Using the blue back arrow command above the menu bar, return to My Device page. ¾ Single tap the FFDISK folder to highlight then using the Edit/Paste commands from the menu bar to paste into the folder. ¾ Double tap the FFDISK folder to open. ¾ Displayed will be 3 folders and a shortcut icon. Move the shortcut icon into the folder called StartUp. ¾ Finally close the My device page either using the small close cross or from File/Close on the menu bar. ¾ Power down the unit. ¾ Remove the USB stick. ¾ When powered up the unit will restart using the new software. ¾



Upgrading IQ3+ operating software post IQGUIV1.2.0 ¾ ¾ ¾ ¾ ¾



Insert the USB memory stick with the new containing the GUI software ".CAB" file into the detectors USB socket. Go to the Systems settings window. Tap the Upgrade icon. Tap the green "Upgrade IQGUI" panel. The upgrade process will automatically start observe and follow any on screen instructions.



Touch screen calibration As with any piece of equipment that employs a touch screen the stylus has to be calibrated. The PC has a stylus calibrate programme that is used to achieve this. ¾ ¾ ¾ ¾ ¾



¾ ¾ ¾



Insert a USB keyboard into the detector USB socket. Power up the detector. When powered, using the keyboard windows key bring up the start menu then select control panel. Select the Stylus icon (double tap) this will start the calibrate programme. A panel will be displayed, select the calibrate tab then the start calibrate button. A cross will appear in the centre of the screen, using your stylus follow the on screen instructions until the process is complete. This may take several circumnavigation of the screen. How well the stylus is aligned to the centre of the cross affects how good the calibration will be. When the screen says complete, press the enter key to accept the new calibration and to return to the start panel then select OK. DO NOT SWITCH OFF THE DETECTOR. Again bring up the start menu using the keyboard. Tap "Suspend" this action saves the calibration to the PC register. The calibration is now complete and stored.



Loma IQ3 technical manual



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Loma Systems



IQ3 & IQ3+ Displays



Spare parts list The IQ3+ front panel assembly is not available as separate parts. In the event of a panel failure the available replacement is a complete touch screen panel, including metal work. Description



Part number



Complete front panel assembly



6120 PL825SP



2A antisurge (HRC) 20 x 5mm fuse 1A antisurge (HRC) 20 x 5mm fuse 10 way ribbon cable



517094 517093 516740



Comments Fully tested including touch screen calibration. 5V supply 12V supply PC to main control board



Remote controls (IQ3 only) The IQ3 is capable of having its display electronics and touch panel remotely mounted in a separate box. Where the distance between the search head and the control box is less than 2 metres the supply for the display electronics obtains its DC supply from the control board mounted in the search head. In this instance the mains power supply is taken to the search head only. For distances greater than 2 metres a local DC supply is required. The supply is mounted in the remote control box; the supply from the control board is disconnected. In this case an additional mains supply to the local DC supply is required. The control box mains supply is 85 - 265 50/60Hz.



Loma IQ3 technical manual



Page 42 of 75



Loma Systems



Transmitter



Quick Links Transmitter Board



Transmitter board picture Transmitter coil connection Transmit waveform Board interconnection Control board to transmitter & receiver board connections Transmitter to receiver board interconnection Transmitter Drive (an explanation) Safe mode (an explanation) Shut down (an explanation)



Loma IQ3 technical manual



Page 43 of 75



Loma Systems



Transmitter



Transmitter J1 transmitter coil connections the fitted marker sleeve indicates coil start TP2 transmitter monitor point



Blue spots indicate assembly fixing points to internal plate



TP7 transmitter monitor point ground



J3 cross ribbon connection to receiver board



P1 main cable to control board Safe mode LED Orange Shut down LED Red



Diagram 1 Transmitter board shown out of a detector for clarity



Loma IQ3 technical manual



Page 44 of 75



Loma Systems



Transmitter



To keep information simple only items that would be of functional value have been shown in diagram 1. All detectors use a standard transmitter board. There is no setting up required should a board be 3 replaced for any reason. The IQ does not use a tuned transmitter. It should be noted that under normal running conditions the top surface of the detector case above the transmitter board can feel noticeably warm to the touch this is quite normal and should not be of concern. Replacement requires only the use of a terminal screwdriver and an M4 nut spinner or spanner (wrench). The board and metal bracket come as a complete assembly. Removal involves the disconnection of connectors P1 and J3. P1 is a 15 way D type with housing secured by standard screw locking fixings. J3 is a standard ribbon cable with ejector lugs. The transmitter wires require the use of a terminal driver to release. 4 x M4 threaded pillars secure the assembly to the internal panel.



Coil connection The transmit coil is the twisted pair of red wires connected to screw terminal J1. It is important that the coil marked with an identifier sleeve (colour does not matter) is always connected to the right hand screw terminal as indicated in diagram 1.



Transmit waveform TP2 signal and TP7 ground provide an easy monitor point should the output to the transmit coil require checking. To be able to do this an oscilloscope with a X1 probe will be required. The waveform will vary according to the frequency running at the time the waveform is monitored. It would be impractical to show all possible waveform shapes therefore just one is shown in order to provide a general idea as to what to expect.



Diagram 2



Loma IQ3 technical manual



Page 45 of 75



Loma Systems



Transmitter



The amplitude of the waveforms will always be in the order of 24v peak to peak. The flat shoulders represent switching of the two halves of the waveform. If no shoulders are seen then the transmitter is not functioning correctly. The shoulders represent the transmit drive OFF time with the remaining portion of the waveform the ON time. As the operating frequency decreases the shoulders appear smaller conversely as the operating frequency becomes higher the shoulders appear larger and the wave shape more pointed, a small loss in amplitude is to be expected at higher operating frequencies.



Board interconnection There are just two connection points P1 and J3. P1 connects to the main control board and provides the DC power; data control signals from the control board and diagnostic monitor functions to the control board. There are two versions of control board in service. 416329 issue C uses a vertical 12 way IDC connector PL1. 416265 issue G and above (the issue letter is important) uses a 15 way D type connector SKT. J3 connects to the receiver board and provides the DC power and phase detection control signals.



Control board connection detail The cable is a single loom that splits the connection from the control board between the transmitter and receiver boards. Control board P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT P1/SKT



Pin 1 2 3 4 5 6 7 8 9 10 11 12



Control board to transmitter board Colour Function Orange CTRL1 data line Grey CTRL2 CPLD reset line Pink CTRL0 data line clock Turquoise CTRL3 data receiver clock reset Blue P channel input from receiver board Brown DC Balance monitor (not used) Red Q channel input from receiver board. White +12V DC Black Analogue ground Violet -12V DC Yellow Diagnostic monitor line -------Not connected



The P and Q channel connections are from a separate 3 core cable from the receiver board J3 that merges at the control board see table below Receiver board J3 J3 J3



Pin 1 2 3



Loma IQ3 technical manual



Control board to receiver board Colour Function Blue P channel input to control board Red Q channel input to control board. -------Screen (only connected at receiver board)



Page 46 of 75



Loma Systems



Transmitter



Connection detail J3 to J1 The ribbon cable that connects the transmitter board to the receiver board. Connector J3 J3 J3 J3 J3 J3 J3 J3 J3 J3 J3 J3 J3 J3 J3 J3



Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



Transmitter board to receiver board Colour Function Red marker DC Balance monitor (not used) In phase demodulator drive Rx Not Rx Analogue ground Quadrature phase demodulator drive Quad Not Quad Analogue ground +12V DC -12V DC Analogue ground P gain 1 P gain 0 Q gain 1 Q gain 0 Not used Not used



Transmitter Drive (an explanation) The current draw for any operating frequency is generally in the order of 230 - 260mA. At higher operating frequencies especially with larger aperture heads this will reduce even to below 200mA in some cases, this is normal. The set up of transmitter drives for all the available frequencies can be achieved in Service/Configuration/Drive setup menu. When entering the Configuration menu the detector is no longer in a run condition, no metal is being scanned for. Within this menu all available frequencies together with there ON, OFF drive times and normal run current and an ability to restore the drive of the frequency selected can be viewed as well as set up. Once in this menu the operating frequency of the detector is that selected in this menu and not the frequency that may have been assigned to any product memory. Exiting this menu restores the selected frequency in the product memory that was in use prior to this menu entry. It is strongly advised not to attempt manual set up of any drive at any time. The menu provides an Auto configure option that will set up all available frequency drives correctly. Manual changes will only risk transmitter shut down and subsequent downtime of the system.



Safe mode (an explanation) The transmitter is able to protect itself in the event of an excessive current draw being detected. A safe current limit has been built into the design of 300mA. Should a current in excess of this value be measured at any selected operating frequency the detector will switch to a safe mode of operation. Safe mode operation means the transmitter switches to 100kHz but pulls little or no current from the 12v rails supplied from the main control board.



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Transmitter



Once safe mode has been initiated the current draw should drop below the set limit of 300mA to remain in safe mode. Safe mode operation is indicated by an Orange LED located in the bottom right corner of the transmitter board. See diagram 1. Once safe mode has been initiated the transmitter will not automatically restore the cause has first to be rectified. If safe mode is initiated during a normal product run then there are two sub menus to take a look at. They can be found in Service/Loma menu the first will display the current for the running frequency. In this case safe mode (100kHz) the current should be below approximately 30mA. The second sub menu is Restore drive operating this command attempts to restore the drive for the running product frequency however if the source of safe mode initiation has not been rectified then safe mode cannot be exited. Powering down the detector then powering up again will also initiate a restore drive command.



Shut down (an explanation) Once safe mode has been initiated with the current draw remaining above the safe limit then the transmitter will shut down. In other words the transmitter will be turned OFF. If this mode has been activated then a second Red LED next to the Orange LED will also be illuminated.



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Receiver



Quick Links Receiver board



Receiver board picture Receiver coil connections Receiver balance waveform Field balancing Transmitter & receiver board interconnection P and Q channel gains P and Q channel output checks



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Receiver



Receiver Diagram 1 Receiver board shown out of a detector for clarity J3 receiver coil connections the fitted marker sleeve indicates coil starts



Outline of screen box



Blue spots indicate assembly fixing points within the screen box



Gain switching LED (red) indicators TP4 receiver balance monitor point ground



TP3 P output monitor point TP2 monitor ground



TP6 receiver balance monitor point



TP3 Q output monitor point TP2 monitor ground J1 cross ribbon connection to transmit board



P & Q channel output to control board



Diagram 1 Receiver board shown out of a detector for clarity



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Receiver



To keep information simple only items that would be of functional value have been shown in Diagram 1. All detectors use a standard receiver board. There is no setting up required should a board be 3 replaced for any reason. The IQ does not use a tuned receiver. Replacement requires only the use of a terminal screwdriver and an M4 nut spinner or spanner (wrench). Removal involves the disconnection of connectors J1 and J2. J2 is a 3 way shaped push fit connector that can only be fitted the correct way round, it is quite small and should be treated carefully to avoid damage. J1 is a standard ribbon cable with ejector lugs. The receiver wires require the use of a terminal driver to release. 4 x M4 threaded pillars secure the assembly to the internal panel.



Coil connection The receive coil is a twisted pair of blue and yellow wires connected to screw terminal J1. It is important that the coil marked with an identifier sleeve (colour does not matter) is always connected to the left-hand screw terminal as indicated in diagram 1.



Receiver balance waveform TP6 signal and TP4 ground, provide an easy monitor point should the balance require checking. To be able to do this an oscilloscope with a X1 probe will be required. The waveform will vary according to the frequency running at the time the waveform is monitored. It would be impractical to show all possible waveform shapes therefore just one is shown in order to provide a general idea as to what to expect.



Diagram 2 The detector uses a mechanical balance as opposed to an electronic balance as with previous models of detectors.



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Balance is factory set, the specification for balance at any operating frequency is < 6V peak to peak including any spikes that may form part of the waveform. Factory balance is achieved by positioning of a movable length of the transmit coil in relation to the fixed receive coils and the positioning of variable sized pieces of mild steel on the bottom surface of the aperture that is then covered by the aperture resin finish. Both the transmit coil and mild steel balance piece/s are securely fixed in place in addition to any coverings. Balance is initially done at the lowest operating frequency of the detector and checked at increasing frequencies up to the maximum operating frequency. The frequencies are: 31kHz



41kHz



Balance Process Frequencies 111kHz 300kHz



500kHz



882kHz



Field balancing (The difficulty of a field balance should not be underestimated) In the unlikely event that the correct balance parameter is found to be out of specification rebalancing in field conditions is limited to two possible scenarios. Located on the internal bulkhead plate behind the main control board is a removable plate, held in place by 8 x M4 screws. Removing this plate gives access to a void in which a section of the transmit wire used in the balance process is exposed. It is important to know that the plate will affect the balance when refitted therefore an allowance for this effect has to be built into the process. The method suggested negates the effect of the plate whilst balancing. A temporary plate of the same size and material with a 20mm hole in its geometric centre replaces it. The "Tune for Resistive Wand" supplied with all detectors can then be inserted (use the end with no ferrite) through the hole to act as a non-metallic wire movement tool pivoting against the hole sides to give leverage. Item Screen plate



Part number 6120/C4/56589



Notes Service engineers should obtain a modified plate



Tune for resistive wand



Not to scale



The sketch shows the wand inserted through the hole to contact the transmit wire. The wand can be placed either side of the wire depending upon in which direction the movement is required.



Temporary plate



Diagram 3



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Suggested method: Chip out the adhesive that secures the transmit wire to free it a hammer and sharp wood chisel (small width blade) will be required. Care is needed to avoid severing the wire. Fit the temporary plate described above ensuring that its fixing screws are fully tightened (it makes a difference if the screws are not tightened). Then insert the wand through the hole to contact the wire to enable movement. Be careful not to lift the wire from the former surface, as gluing in place will be problematic. When an acceptable balance at all frequencies is found reaffix the wire solidly in place. Then replace temporary cover with its original. The procedure is commenced at 31kHz as with a factory balance and checked at the remaining frequencies as detailed in the above table. The best way to select the required frequencies that does not involve any changes to the detector set up set up is to select them using Service/Configuration/Drive settings menu. Once drive settings is entered, the desired frequency is selected from the available list. Exiting the menu restores normal operation. It does not matter what frequency was selected at the point drive settings is left. In the factory a two part Araldite would be used but in the field unless the head is a vertical mount the adhesive would be to fluid to use. Therefore it is suggested that thick superglue and a quick setting activator be used instead. It is advised to start by spotting small positions along the wire length first to lock the wire in place then finishing off by covering the whole wire length.



Diagram 4 The adhesive is best placed along the edge of the wire and allowed to run down a little before spraying with the activator. See diagram 4. A suitable superglue and activator can be obtained from Loma unless available locally. Item Superglue Activator



Part number 804064 804021



Board interconnection Interconnections between receive, transmit and control boards is detailed in the Transmitter section of this manual.



P and Q channel gains The P & Q channel gains are individually adjusted during a Full learn cycle according to the level of signal measured on each channel. The trigger for a reduction in gain is when the software records channel saturation.



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There are four gain levels the gain selection for each product memory post learn can be found in the Learn setup menu/Head P gain or Head Q gain menus. The receiver board is also fitted with four LED's the illumination pattern being determined by the operation of the gain control process. To view the LED's the lid of the receiver screened box must first be removed. The lid is secured by 2 x M4 slot head screws located in the vertical plane of the lid. If the lid is removed be sure to replace it before normal use of the detector. Please see the following table for a functional description. Channel



Setting



Gain applied



P P P P



Maximum (MAX) Medium (MED) LOW Minimum (MIN)



11.0 9.0 4.0 2.0



LED illumination PG0 PG1 OFF OFF ON OFF OFF ON ON ON



Q Q Q Q



Maximum (MAX) Medium (MED) LOW Minimum (MIN)



11.0 9.0 4.0 2.0



QG0 OFF ON OFF ON



QG1 OFF OFF ON ON



Please note on some older boards the identifier may still refer to the old descriptions of R & X for example R equates to P and X to Q.



P and Q channel output checks Receiver board The P channel output can be checked using an oscilloscope on TP1 signal and TP2 ground. The Q channel output can be checked using an oscilloscope on TP3 signal and TP2 ground. Control board Alternatively the signals can be checked at the control board input. The P channel output can be checked using an oscilloscope on TP8 signal and TP1 analogue ground. The Q channel output can be checked using an oscilloscope on TP9 signal and TP1 analogue ground. A piece of metal can such as a screwdriver be used to generate signals.



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P & Q Channels



Quick Links P&Q Channel Explanation



Introduction Basic concepts Product compensation Compensation of products with no product effect Definition of resistive and reactive



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P & Q Channels



P and Q channels An explanation of product compensation as used in the IQ3 Introduction For the last two decades, various versions of Loma metal detectors have used the concept of combining Resistive and Reactive signals together to achieve product compensation, i.e. attempting to null out the product effect as the product passes through the detector. The IQ3 uses the same technique to achieve product compensation, except that it does so by combining P and Q signal data. This paper explains the differences between both systems, and will be of particular benefit to those engineers that are familiar with traditional Loma concepts and now need to become competent with the IQ3. Basic concepts When a product is passed through a detector the magnetic field is slightly altered, and it is this change that the detector measures. Two variables associated with the magnetic field are affected by passing a product: the amplitude of the signal and the phase angle of the received signal with respect to the transmitter. These are shown as A and θ on the following diagram: Diagram1 Basic phase plot representation Y



Y1 A θ X1



X



For engineering convenience, the electronics provides this amplitude and phase information in two components X1 and Y1 that can be used to plot the same information on the XY coordinate plot. In an actual system, the values of X and Y will vary with time, and when plotted on the XY graph the signal trace will look like a figure of eight, as shown in diagram 2. The phase angle is measured when the signal levels reach a peak.



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P & Q Channels



On the IQ3, the X and Y signals are called P and Q signals, short for Phase and Quadrature: P signals are in-phase with the transmitter signal; Q signals are ninety degrees phase shifted. The P signal uses the R input and the Q signal the X input into the control board respectively (remember that the control board is shared between the IQ2 and IQ3 products). Once the P and Q signals are digitised on the control board, the product compensation algorithm works in just the same was as if they were R and X signals on a conventional Loma metal detector. The output of the product compensation algorithm is displayed on the front panel, and when it exceeds a threshold the reject is fired. Diagram 2 Typical locus plot of P and Q signals over time. Q



Measured phase angle



P



Product compensation In order for the product compensation algorithm to work properly, the phase angle of the product has first to be established so that it can be used by the algorithm: this is computed during a product learn. The more consistent the phase angle of the product is, the better the product signal will be nulled, i.e. a smaller signal shown on the display. In the control board software, there are actually two equal but different product compensation algorithms, the so called P channel or Q channel algorithm: ¾ ¾



If the P signal is greater than the Q signal, use the Q channel algorithm. If the Q signal is greater than the P signal, use the P channel algorithm.



The learning process establishes the compensation value and which channel to run automatically.



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P & Q Channels



The IQ3 displays the learnt product compensation as an angle in the Learn setup menu/phase angle menu from software versions IQ3V1.1.0 onwards. It is possible to establish the algorithm that is being used by looking in the Service/Loma menu/Diagnostics menu to see which one is running: P channel or Q channel. The phase angle can also be viewed in this menu as a number. Compensation of products with no product effect These are typically dry products (no electrical conductivity), such as hard frozen products, (