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LMU 216 - Magtrol

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4. Strain gauge Strain gauge transducer 2 transducer de Fei rete Sas L 16 Supply t 16 Supply 2 SENSE 13 Signal 13 Signal 12 Signal 12 Signal 2 SENSE j 7 4 Supply j P 17 Supply Wiring type 1 Wiring type 2 Fig 2 6 Types of wiring For applications in conformity with the T V standard detecting short circuits and or failure of a conductor in the connecting cable is compulsory In this case no signal must be sent on terminals 21 SENSE and 22 SENSE Note Record the length of the cable between the transducer and the LMU as well as its type on the configuration and calibration form see Appendix A DESIGNATION OF THE VOLTAGE AND CURRENT INPUTS OUTPUTS The LMU 216 load monitoring unit is fitted with one voltage input on the LMU 212 module and also for voltage inputs and on the summer of the control module The main voltage input for instance allows to collect the voltage generated by another LMU type load monitoring unit The summer voltage input is used to directly add voltages generated by up to four load monitoring units In this case it is important no to saturate the LMU 216 having a dynamic range of 10 V For this reason the summer output is fitted with an amplifier damping the summing result The LMU 216 also owns four outputs two of which are main outp
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9. I THNNVHO dio yO NIU Aaqisues 1eonpsuea 6 t 38 Magtrol Load Monitoring Unit LMU 216 Chapter 4 Applications 4 1 2 MuLTI TRANSDUCER WEIGHING FOR CONTAINER GANTRY CRANES Figure 4 4 illustrates an application of multi transducer weighing used for overloads monitoring on container gantry cranes Four load pins are connected to different load monitoring units pins A and B are connected to a LMU 217 pin C to a LMU 212 and pin D to a LMU 216 The four pins are equally loaded The total load is obtained by adding the four signals delivered by the load pins Fig 4 5 Multi transducer weighing application Following functions and signals are available on the LMU 216 e Input signals signal of load measuring pin D gross load A voltage on summer gross load B voltage on summer gross load C voltage on summer gross load D voltage on summer e Output signals gross load D voltage total net load voltage total gross load voltage total gross load current 39 Chapter 4 Applications Magtrol Load Monitoring Unit LMU 216 Relays output threshold gross load on pin D maximum gross overload maximum gross underload slack of cable maximum net overload Figure 4 6 offers a synthesis of this information in a diagram and figures 4 6 and 4 6 indicate the different signals available on the load monitoring
10. 3 CALIBRATION Fig 3 1 Location of the potentiometers on the load monitoring unit board eee 26 Fig 3 2 Location of the micro switches SWC on the load monitoring unit board esee 28 Fig 3 3 Location of the relays and REL2 and of the micro switches SWB of the load monitoring unit board 29 Fig 3 4 Location of the relays REL3 and RELA and of the adjustment potentiometers eerte 30 Fig 3 5 Location of the X coefficient adjustment components cessus Fig 3 6 Internal connection taring circuit diagram Fig 3 7 External connection taring circuit diagram eese eset eene then tette testen rete nne nnns 4 APPLICATIONS Fig 4 1 Simple weighing application 2 unc ease e OR db ERR ERU A Er E Ree aioe Fig 4 2 Simple weighing system esee enne tenente Fig 4 3 Configuration and calibration protocol for a simple weighing application part 1 of 2 Fig 4 4 Configuration and calibration protocol for a simple weighing application part 1 of 2 Fig 4 5 Multi transducer weighing application Fig 4 6 Multi transducer weighing system Fig 4 7 B LT E control input terminals eee eee eiie seinen entente etn etn tette ettet nnne nnt Fig 4 8 Configuration and calibration protocol for a multi transducer weighing s
11. Fig 4 2 Simple weighing system The configuration and calibration protocol illustrated on figures 4 3 and 4 4 indicate the various signals made available on the load monitoring unit for this application 36 Chapter 4 Applications Magtrol Load Monitoring Unit LMU 216 Fig 4 3 Configuration and calibration protocol for a simple weighing application part 1 of 2 X10 000 9L2 v2Z N d
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13. The signal at the taring circuit input can be selected by using the micro switches SWD6 and SWD7 as well as the jumper JP41 The signal corresponds to the TARE value which will be subtracted from the 32 Magtrol Load Monitoring Unit LMU 216 Chapter 3 Calibration measured signal to obtain the NET signal on the output TARING O P terminal 38 see figure 3 6 P18 TARING OFFSET TARING CIRCUIT SIGNAL I P Fig 3 6 Internal connection taring circuit diagram 3 7 4 TARING CONTROL CIRCUIT CONNECTION DIAGRAM Figure 3 7 shows the external taring circuit connections Two push buttons can for instance be fixed on the side of the weight display unit one being used for taring TARE the other for resetting the tare RESET The signal is made available on the output TARING O P terminal 38 EXTERNAL SIGNAL NAME 4 18 EXTERNAL SIGNAL AUTO ZERO Auto TARE TARING OFFSET TARING O P TARING WS weight TARE reset 40 CIRCUIT E SIGNAL I P Fig 3 7 External connection taring circuit diagram With this equipment taring can be carried out by pushing the TARE button for at least 1 s or until the display unit shows a To reset the tare push the RESET button for at least 1 s or until the display unit shows the gross weight 33 Chapter 3 Calibration Magtrol Load Monitoring Unit LMU 216 3 8 CALIBRATION OF THE BUILT IN TEST EQUIP
14. Note Record the designation of the external signals linked to REL4A REL4B et RELAC on the configuration and calibration form see Appendix A Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration 2 4 4 5 Adjusting the switching delay The switching delay corresponds to the time passing between the moment when the detection level is reached at the voltage output of the LMU and the moment when the relay is de energized see figure 2 9 On the other hand the switching delay on tripping of the relay is instantaneous F gt Fihreshold 1 2 Urthreshota 1or2 ON OFF OFF t REL 1 or 2 REL 1 or 2 REL 1 or 2 enegised de enegised enegised F lt Fihreshoid 1 2 U mreshoia 1 2 OFF OFF t REL 1 or 2 REL 1 or 2 REL 1 or 2 enegised de enegised enegised D switching delay ON tripping of the switching delay OFF release of the switching delay Fig 2 9 Examples of switching delays To setthe switching delay to be applied on relays REL1 REL2 REL3 and RELA adjust potentiometer P1 P2 P13 and 15 Figure 2 10 and 2 11 show the user where the potentiometers are located on the LMU 216 load monitoring unit board Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 Ajustement potentiometers Adjustement potentiometers Fig 2 11 Potentiometer location on the load monito
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16. STOP WARNING HAVING ACTIVATED THE B I T E FUNCTION THE VARIOUS OUTPUTS U I AND RELAYS WILL NO LONGER BE REPRESENTATIVE OF THE REAL LOAD APPLIED TO THE TRANSDUCER NO SAFETY CHECKS WILL BE CARRIED OUT TO PREVENT ANY RISK ONLY ACTIVATE THE B I T E WHEN THE APPLIED LOAD IS ZERO AND WHEN THE SYSTEM REPRESENTS NO RISK THE B LT E FUNCTION MUST ONLY BE USED AS A PERIODICAL CHECK DO NOT HAVE IT ACTIVATED DURING NORMAL USE OF THE LOAD MONITORING UNIT 4 Chapter 4 Applications Magtrol Load Monitoring Unit LMU 216 Fig 4 7 B LI T E control input terminals Procedure 1 Make sure that no load is applied on the transducer and that the activation of the B I T E function does not endanger the application Activate the B I T E function Wait until the final voltage has settled up to approximately 7 s if the LMU has been configured with a 0 3 Hz filter Check the correct operation of the relays REL1 and or REL2 depending on the setting Measure the voltage and the current I by means of a measuring instrument connected to the corresponding outputs Compare the measured signal to the calibrated signal see installation Deactivate the B I T E function The signal obtained on the load monitoring outputs when the B LT E function is activated must correspond to the signal after calibration 42 Chapter 4 Applications Magtrol Load Monitoring Unit LMU 216 Fig 4 8
17. 66v 0 0 440 440 340 IN sed sams X LNJIOI44309 LMS Fon Fan vn ian ze iL dio HANNS 195350 NIVO I3MS m d O Av Tti 155440 P ind m d 82 rams anon aa 03x zs se v 9t 35VEIOA 5 LIN A o Za scar ETT SIAVN TWNOIS TWNYALXS C3 90 SNR 1 04302 X dil VNSIS POM ONTEVL MVIWOO NIS 138440 ONINVL nv e _ V SIAVN 5 37 Magtrol Load Monitoring Unit LMU 216 Chapter 4 Applications Fig 4 4 Configuration and calibration protocol for a simple weighing application part 1 of 2
18. Before connecting the LMU 216 load monitoring unit select its operating voltage by correctly positioning the jumper DC or AC voltage and then in case of an AC supply choosing the correct voltage by means of the switch Finally choose the supply fuse rating DAMAGED IF NOT DESTROYED IF THIS ADVICE IS NOT STOP WARNING THE MONITORING UNIT CAN BE SERIOUSLY FOLLOWED The information given in figures 2 3 to 2 5 and in the table on the next page allows the user to select the operating voltage of the load monitoring unit to choose the supply fuse and to assign the supply terminals Terminal Operating voltage selection jumper and switch Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration 1 Place the jumper according to the selected supply mode see figure 2 4 DC for a DC type supply with a voltage between 20 and 32 VDC AC for an AC type supply 230 VAC 115 VAC or 48 VAC 2 In case of an AC supply position the switch on see figure 2 4 230 V for an AC voltage of 230 VAC 115 V for an AC voltage of 115 VAC for operating voltages of 48 VAC or 20 to 32 VDC the position of the switch is irrelevant Operating voltage Operating voltage Operating voltage Operating voltage 230 VAC 115 VAC 48 VAC 20 to 32 VDC DC Dco o DEN 115V AC AC o mm Fig 2 4 Jumper and
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20. the detection threshold is now reached IESE Note Record the values level14 and Fieyej4 on the configuration and calibration form see Appendix A 3 6 ADJUSTMENT OF THE SUMMER COEFFICIENT X The following conditions are required to adjust the X coefficient e Place the micro switch SWB9 see figure 3 3 on ON to activate the test signal e Check that the terminal 36 U yp is free e Make sure that all other inputs terminals 33 34 and 35 are on zero Plugin the jumper JP41 and remove the jumpers JP33 and JP42 see figure 3 5 Proceed as follows to carry out the coefficient adjustment 1 Connect a digital millivoltmeter between terminals 15 and 9 0 V of the load monitoring unit 2 Adjust the potentiometer P9 to obtain a reading of 1 V 3 Connect a digital millivoltmeter between terminals 32 Ug and 9 0 V 4 Themicro switch is already positioned Now adjust the potentiometer P11 to obtain an output voltage Ug equal to the input voltage set at 1 and multiplied by the coefficient X this with an accuracy of 20 mV adjustment components are shown on figure 3 5 Adjustement potentiometer ae Fig 3 5 Location of the X coefficient adjustment components 3 Chopter 3 Calibration Magtrol Load Monitoring Unit LMU 216 3 7 3 7 1 3 7 2 3 7 3 857 Example The user want to get a coefficient of 0 5 He first places the mi
21. 2 Installation Configuration 2 4 4 3 Detection chain for relay 3 REL3 Figure 2 6 indicates the location of the SWE micro switches on the load monitoring unit board Comparator option SWE micro switches Fig 2 8 Location of the SWE micro switches The following table allows the user to select the energising mode and the hysteresis value for the relay REL3 Configuration Condition Effect SWE7 SWE8 SWE9 SWE10 REL3 de energised for F lt Figs OFF ON Detection for lt Ulevel3 REL3 de energised for F gt ON OFF Detection for gt Ujyeis Hysteresis 0 5 ex m s Tasse my measured Hysteresis 5 FSD ON measured on d No latching OFF A __ Relay switching after the alarm has gone off Latching ON _ ____ No relay switching after the alarm has gone off IESE Note Record the value and the configuration of the micro switches SWE7 SWE8 SWE9 and SWE10 on the configuration and calibration form see Appendix A Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 This table allows the user to select the configuration of the micro switches according to the state 2 4 4 4 IESE Note 88 of the relay REL3 Contact Contact State of relay REL3 REL3A REL3C REL3A REL3B RELS energised Cl
22. 2 Please use our forwarder TNT 1 800 558 5555 Account No 154033 Only ship ECONOMIC way 3 days max within Europe 3 Include the following documents with your equipment Delivery note with Magtrol SA s address as listed above Three pro forma invoices with e Your VAT number Value for customs purposes only Description of returned goods Origin of the goods in general Switzerland e Noticed failures 4 A cost estimate for repair will be sent to you as soon as the goods have been analyzed If the repair charges do not exceed 25 the price of a new unit the repair or calibration will be completed without requiring prior customer authorization 5
23. 216 LOAD MONITORING UNIT The LMU 216 load monitoring unit is fitted with stuffing glands maintaining the connection cables and securing the tightness of the unit s housing To pass the cables through the stuffing glands simply apply the following procedure 1 2 3 4 5 Uninsulate the conductors of the different cables Remove the housing cover after having unscrewed the fixing screws Pass the cables through the stuffing glands as shown on figure 2 2 a Unscrew the hex nut by rotating it counterclockwise The main body of the stuffing gland should not be removed from the unit s housing b Extract the internal and external gasket from the hex nut Both gaskets are used to compensate for the different cable diameters Push the internal gasket to extract it from the external gasket G c Pass the cable through the hex nut the internal gasket when used the external gasket G the sealing ring and the main body d Reassemble the stuffing gland and coat the front part of the external gasket O with silicone see figure 2 3 before screwing the hex nut onto the main body Tighten the hex nut in such a way that the internal gasket and or the external gasket protrudes so as to provide the degree of watertightness required e Ensure also that the cable is held firmly in the stuffing gland CAUTION Do NOT DAMAGE THE GASKETS WITH CUTTING OBJECTS CHECK THAT NO FOREIGN BO
24. Calibration Magtrol Load Monitoring Unit LMU 216 MICRO SWITCH SWA 10 Is ON 1 CAUTION THE LOAD MONITORING UNIT WILL ONLY BE OPERATIONAL WHEN THE ADJUSTMENT OF THE DETECTION THRESHOLDS The following conditions are required to adjust the detection thresholds Noload must be applied to the transducer e The micro switch SWBO see figure 3 3 must be ON to activate the test signal To adjust the detection thresholds Uj 4 and Uj 4 place the micro switches SWC3 and SWCA see figure 3 2 on ON Make sure that the jumper JP33 has been removed To adjust the detection thresholds Uj 4 and connect and to and check that the test signal transits through C1 see Appendix A after having pluged in the jumpers JP37 and JP38 Figure 3 4 indicates the location of these jumpers SN SWC Fig 3 2 Location of micro switches SWC on the load monitoring unit board Calculate the threshold voltages in relation to the voltage output 10V x Fievel Uo leve nominal 28 Magtrol Load Monitoring Unit LMU 216 Chapter 3 Calibration 3 5 1 Adjustment of the detection threshold 1 LED Connect a digital millivoltmeter between terminals 15 and 9 0 V of the load monitoring unit Adjust the potentiometer P9 to obtain a reading of With an accuracy of 20 mV Figure 3 1 indicates where the potentiometers P1 to
25. Configuration and calibration protocol for a multi transducer weighing system part 1 of 2 HOLVHVdlWOO NN z ti rere Son ee vir DII ar OOO ai eT 2 AE AST ASTH 9 ear eren 8 e 90 AST 5 3 E 65 Q Im o m Ly 70 Y fear fear 9 9 1 AYTAY m 8 p d NOLLVZITVILINI 7 x vo 5967 L00 bQ 18 paws f Jisnrav G T1OHS38HL f SWE 440 NO lt 4 avomxo iN 7 xL J on s o Lf xo ts on G1OHS3UHL 3 avaa SAMS PAMS low zi SH SN 3G 24 n QVOTH3AO LIN ava Sid NE plaa 4 4 I 93MS G IOHS3UHL pc CAL M un amp QVOTI3AO LIN S NO sii cams 0 440 t 2 p y 592 10 0 18 orams snrav 734 13538 3 to No v G OHS3UHI Sd EO NO 430 gt 3 sid GVOTYIGNN 55059 s ON 9 l9 el dion Ava 53S 83S m GIOHS3SYHL E o QVOTH3ONn 55049 Seu Kem 224 OLaMS Av 13d moma MEE 55089 g 190 S an NO 440
26. P10 are located Turn the potentiometer slowly until the LED of REL goes on the detection level will then be switched off Figure 3 3 indicates where this LED 15 located Turn the potentiometer slowly until the LED of REL goes off the detection level will then be switched off the detection threshold is now reached S SWB REL1 LED Fig 3 3 Location of the relays RELI and REL2 and of the micro switches SWB of the load monitoring unit board ee Note Record the values and Fj on the configuration and calibration form see Appendix A 3 5 2 Adjustment of the detection threshold U 2 1 Connect a digital millivoltmeter between terminals 15 and 9 0 V of the load monitoring unit Adjust the potentiometer P9 to obtain a reading of Uo with an accuracy of 20 mV Figure 3 1 indicates where the potentiometers P1 to P10 are located Turn the potentiometer P5 slowly until the LED of REL2 goes on the detection level will then be switched off Figure 3 3 indicates where this LED 15 located Turn the potentiometer P5 slowly until the LED of REL2 goes off the detection level will then be switched off the detection threshold is now reached 29 Chopter 3 Calibration Magtrol Load Monitoring Unit LMU 216 887 Record the values Jevey2 and on the configuration and calibration form see Appendix A 3 5 3 Adjustment of the detection threshol
27. Proceed as follows to carry out the zero adjustment 1 Connect a digital millivoltmeter between terminals 15 and 9 0 of the load monitoring unit 2 Adjust the potentiometers P6 and P7 to get a reading of 0 V 10 mV on the millivoltmeter Figure 3 1 indicates the location of the potentiometers to P10 Ajustement potentiometers Fig 3 1 Location of the potentiometers on the load monitoring unit board 26 Magtrol Load Monitoring Unit LMU 216 Chapter 3 Calibration 3 2 3 3 3 4 ZERO ADJUSTMENT ON THE CURRENT OUTPUT The following condition is required to adjust the zero on the current output Noload must be applied on the transducer e The micro switch SWCI see figure 3 2 must be ON e micro switch SWA10 see chap 2 figure 2 7 must be OFF Make sure that the jumper JP33 has been removed In this configuration the current output does not depend on the applied load This allows the user to carry out an accurate adjustment on the current output Proceed as follows to carry out the zero adjustment 1 Connect a digital milliampermeter between terminals 10 and 9 0 V of the load monitoring unit 2 Adjust the potentiometer P8 to get the initial value with an accuracy of 50 uA for instance 4 mA 50 pA on the milliampermeter Figure 3 1 indicates where the potentiometer P8 is located SENSITIVITY ADJUSTMENT ON THE VOLTAGE OUTPUT To adjust the
28. QES System Manager Page 1 del 49 Magtrol Limited Warranty Magtrol Inc warrants its products to be free from defects in material and workmanship under normal use and service for a period of twenty four 24 months from the date of shipment Software is warranted to operate in accordance with its programmed instructions on appropriate Magtrol instruments This warranty extends only to the original purchaser and shall not apply to fuses computer media or any other product which in Magtrol s sole opinion has been subject to misuse alteration abuse or abnormal conditions of operation or shipping Magtrol s obligation under this warranty is limited to repair or replacement of a product which is returned to the factory within the warranty period and is determined upon examination by Magtrol to be defective If Magtrol determines that the defect or malfunction has been caused by misuse alteration abuse or abnormal conditions of operation or shipping Magtrol will repair the product and bill the purchaser for the reasonable cost of repair If the product is not covered by this warranty Magtrol will if requested by purchaser submit an estimate of the repair costs before work is started To obtain repair service under this warranty purchaser must forward the product transportation prepaid and a description of the malfunction to the factory The instrument shall be repaired at the factory and returned to purchaser transportat
29. a signal summer issuing the summing result on terminal 32 Ug The following table allows the user to select the signals to be added subtracted on the summer 22 Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration Ug Up Uc Up X SWD4 SWD5 SWE1 Summation OFF OFF OFF OFF OFF ON OFF ON ON Ua Ug Uc Up ON OFF OFF Ua Ug Uc x ON OFF ON Ua Ug Uc Up ON ON OFF Ua Ug Uc Up IESE Note With this option installed only the last summation configuration is available Ua Ug Uc Up The voltages U terminal 36 and Ug terminal 35 are added in any case whereas it is possible to subtract the voltages Uc terminal 34 and Up terminal 33 The result of the summation is sent on the output Ug terminal 32 Figure 2 13 shows the location of SWD micro switches on the load monitoring control module board Figure 2 8 shows the location of the SWE micro switches Comparator options SWD micro switches Fig 2 13 Location of the SWD micro switches IESE Note Record the configuration of the micro switches SWE1 SWD4 and SWDS5 on the configuration and calibration form see Appendix A 23 Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 887 Record the configuration of the micro switch SW1 on the configuration and calibration form see A
30. ar gat sar S3A 2d PESTENG D d A0 d on ujBue 4 edA gc dixo SE RH q o xa H9 3 swyo eouepeduii 1eonpsuei t 1 gt 70 536 NJ Aoedeo saonpsues y l AAW Ajanisuas 1eonpsuei x lt O c Ed 48 Appendiix B CE Conformity declaration Document No Do033E Date 16 03 2009 Visa nbur Formulaire Q SA 2 vg Declaration of conformity CE DEC No 026 We MAGTROL SA Centre technologique Montena 1728 ROSSENS Fribourg SWITZERLAND Herewith declare that the following products Load monitoring unit family types LMU 212 216 and 217 which are mentioned in this declaration meet all requirements defined in 2004 108 CE Electromagnetic compatibility EMC Those products have been developed and manufactured according to the processes described in Magtrol s Manual conformity with the ISO 9001 norm For the evaluation of these products following norms have been taken into account IEC ou EN 61326 1 Electrical equipment for measurement control and laboratory use EMC requirements Part 1 General requirements ou EN 61326 2 3 Electrical equipment for measurement control and laboratory use EMC requirements Part 2 3 Particular requirements Rossens may 5th 2009 J Cattin N Buri General Manager
31. be returned you will be directed to either ship your equipment back to Magtrol Inc in the United States or Magtrol SA in Switzerland Returning Equipment to Magtrol Inc United States When returning equipment to Magtrol Inc s factory in the United States for repair and or calibration a completed Return Material Authorization RMA form is required 1 Visit Magtrol s Web site at http www magtrol com support rma htm to begin the RMA process 2 Complete the RMA form online and submit 3 An RMA number will be issued to you via e mail Include this number on all return documentation 4 Ship your equipment to MAGTROL INC 70 Gardenville Parkway Buffalo NY 14224 Attn Repair Department 5 After Magtrol s Repair Department receives and analyzes your equipment a quotation listing all the necessary parts and labor costs if any will be faxed or e mailed to you 6 After receiving your repair estimate provide Magtrol with a P O number as soon as possible A purchase order confirming the cost quoted is required before your equipment can be returned Returning Equipment to Magtrol SA Switzerland If you are directed to ship your equipment to Switzerland no RMA form number is required Just send your equipment directly to Magtrol SA in Switzerland and follow these shipment instructions 1 Ship your equipment to MAGTROL SA After Sales Service Route de Montena 77 1728 Rossens Fribourg Switzerland VAT No 485 572
32. sensitivity on the voltage output terminal 15 carry out the following operations 1 Apply a known load F nown gt 2 F 5 4 0n the transducer Frominal nominal 10 VDC known Fknown 2 To determine the rating of the voltage output carry out the following calculation 10V x Fknown known nominal 3 Make sure that the jumper JP33 has been removed 4 Connect a numerical milliampermeter between terminals 15 and 9 0 V of the load monitoring unit 5 Adjust the potentiometer P4 to get a reading of known with an accuracy of 10 mV Figure 3 1 indicates where the potentiometer P4 is located SENSITIVITY ADJUSTMENT ON THE CURRENT OUTPUT To adjust the sensitivity on the current output terminal 10 maintain the load Fknown on the transducer First carry out the procedures described in the chapters 3 1 and 3 3 and then proceed as follows 1 To determine the rating of the current output make the following calculation 16 MA x Fknown known 4 2 Connect a numerical milliampermeter between terminals 10 and 9 0 V of the load monitoring unit 3 Position the micro switch SWA10 and ON so as the current output depends on the applied load 4 Adjust the potentiometer P10 to get a reading of know with an accuracy of de 50 uA Figure 3 1 indicates where the potentiometer P10 is located 27 Chopter 3
33. switch configuration 3 Check the rating of the fuse inserted in its support according to the following table i Supply terminals Operating Switch voltage 0 V 18 N 19 P 20 230 VAC earth neutral phase 80 mAT 230V 115 VAC earth neutral phase 160 mAT 115V 48 VAC earth neutral phase 400 mAT irrelevant 20 32 VDC OV 20 32 V 400 mAT irrelevant A fuse of each rating is supplied with each load monitoring unit WARNING SWITCH OFF THE SUPPLY BEFORE WIRING THE LMU FOR SAFETY REASONS IT IS IMPORTANT TO SECURE THE STABILITY OF THE SUPPLY UNIT USED AND RESPECT THE OPERATING VOLTAGE SELECTED ON THE LMU 11 Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 887 Note Do not forget to report the designation of the collected external signals connected to the supply terminal on the configuration and calibration form see Appendix A Also check off the sticker placed inside of the cover to specify the voltage to which the unit is configured 4 When using a 230 VAC 115 VAC or 48 VAC supply always connect the LMU to the ground as shown on figure 2 5 Refer to user manual for adaptation to the supply voltage Operating voltage 4 230 80mA 115 160mA 48 400mA O zzz 20 32 400mA Risk of electric shock Do not handle the terminal the fuse and or the AC DC selector
34. unit terminals for this application Maximum gross surcharge threshold for each pin Maximum gross surcharge threshold for all four pins Maximum gross undercharge threshold for all four pins Maximum net surcharge threshold for all four pins Gross load A Transducer A e LMU 217 Transducer B O Gross load B Transducer C LMU 212 O Gross load C Gross load D Transducer D U gross LMU 216 gross U net O Fig 4 6 Multi transducer weighing system 40 Magtrol Load Monitoring Unit LMU 216 Chapter 4 Applications 4 2 USING B I T E SIGNAL The LMU Load Monitoring Unit is fitted with a system to test the amplification chain of the signal generated by the transducer The B I T E test signal simulating a load must be calibrated when installing the LMU see chapter 3 section 3 6 There are two ways to activate the function e connect the B LT E control input terminal 23 to the ground terminal 24 see figure 4 7 senda low active CMOS TTL compatible control signal see following table on the signal on terminal 23 ground on terminal 24 Necessary B I T E input terminals condition 23 24 function logic state Activated Low Low level input voltage VIL 0 to 0 5 VDC Deactivated High High level input voltage VIH 0 7 to 25 VDC
35. with 4 inputs e Tare function e Optional balancing and comparator sub module DESCRIPTION The Magtrol Load Monitoring Unit is specially designed for strain gauge transducer applications Specifically developed for use with Magtrol load measuring pins and load force weight sensors the LMU Series provides excitation current and amplifies the output signal of full bridge strain gauges Load Monitoring Units are flexible and fully configurable due to DIP switches and jumpers which allow the unit to be easily installed no solder connections are required The level detectors and the outputs can be dedicated either to the MODEL COMPARISON LMU Data Sheet LMU 217 LMU 212 LMU 216 full bridge input to the voltage input or to the sum of both see Application Selection at the top of page 3 built in auto diagnostic system detects any short circuits or signal line failures thus allowing the system to be used in applications where safety is important If a problem is detected both relays are deactivated and the output voltage respective current changes to gt 10 VDC and gt 20 mA The LMU is fully compatible with European Community CE standards Its IP 65 aluminum housing allows the system to be used in harsh environments Using SMD surface mounted device technology the LMU allows the maximum performance price ratio for strain gauge transducer monitoring LMU 212 LMU 217 LMU 216
36. 2 3 CONNECTION OF THE LMU 216 LOAD MONITORING UNIT esee nennen nennen renes 9 2 4 CONFIGURATION OF THE LOAD MONITORING UNIT eene enne rennen 10 2 4 1 Adaptation of the monitor to the available supply 10 24 2 Selection of the type of wiring to the strain gauge eene 13 2 4 53 Designation of the voltage and current inputs outputs eeeeeeseeeeeeee eene eene nemen 13 2 4 4 Configuration of the detection Chains 00 0 ennt nnne nentes innen enne 14 24 5 S lection ot the pass band eno eR e dieran ipe dae E Risa aed 21 2 4 6 Selection ob the sensitivity e eter rede i eed e e te e ed eterne 22 247 Signal combination on the summer sees rennen eere eene 22 2 4 8 Division of the transducer signal or the input voltage by two ssssseeeee en 24 2 4 0 Selection of the X coefficient Tahte nennen entrent nnen nennen rennen enne ens 24 3 EE 26 3 1 ZERO ADJUSTMENT ON THE VOLTAGE OUTPUT 26 32 ZERO ADJUSTMENT ON THE CURRENT OUT UT s 3 3 SENSITIVITY ADJUSTMENT ON THE VOLTAGE OUTPUT Ug 2 34 SENSITIVITY ADJUSTMENT ON THE CURRENT OUTPUT lop y 3 5 ADJUSTMENT OF THE DETECTION 5 28 3 5 1 Adjustme
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39. CALIBRATION 46 APPENDIX CE CONFORMITY DECLARATION 49 MAGTROL LIMITED WARRANTY siraya cles isnt lente Least ob esae cie and oc 50 CLAIMS e reta ta reu vent em abc eere das a E o ou fete dip P etes 50 SERVICE INFORMATION i id loo spec ceca ee sa ete cs essa stel paces cae sies krant 51 TABLE OF FIGURES 2 INSTALLATION CONFIGURATION Fig 2 1 Installation of the LMU 216 load monitoring unit essent eterne tenente 8 Fig 2 2 Stuffing gland overall and exploded view Fig 2 3 Load monitoring unit board with location of the selection elements eee 10 Fig 2 4 Jumper and switch configuration Fig 2 5 LMU grounding when using a 230 115 or 48 VAC supply essere Fig 2 6 Types Of Witing Ere RE rne emere me Po eo tenu be Fig 2 7 Location of the SWA micro switches Fig 2 8 Location of the SWE micro switches Fig 2 9 Examples of switching delays eese Fig 2 10 Potentiometer location the load monitoring unit board P1 to 10 2 Fig 2 11 Potentiometer location on the load monitoring unit board P12 to P15 Fig 2 12 Location of the SWB micro switches on the load monitoring unit board pt Fig 2 13 Location of the SWD micro switches
40. DIES HAVE SLID BETWEEN THE ELEMENTS OF THE STUFFING GLAND DEGREASE THE SURFACE OF THE CABLE WHICH WILL COME INTO CONTACT WITH THE GASKET THE SEAL OF THE STUFFING GLAND CANNOT BE GUARANTIED IF THESE INSTRUCTIONS ARE NOT FOLLOWED Assembled stuffing gland Protruding gasket HS Cable Internal gasket Sealing ring Hex nut External gasket Main body Only grease the front part Fig 2 2 Stuffing gland overall and exploded view Connect the conductors of the various cables to the load monitoring unit terminals Put the cover back on the load monitoring unit and tighten up its six screws Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 2 4 CONFIGURATION OF THE LOAD MONITORING UNIT 88 Note The asterisks X correspond to the standard configuration of the LMU 216 version 02X that is to say the basic uncalibrated modules The configuration of the LMU 216 load monitoring unit includes all start up operations which are necessary to achieve a trouble free operation This ranges from the supply voltage to the selection of the application the sensor connection the energising mode of the relays and their delay time the selection of the pass band and the sensor sensitivity and the use of the summer As a reminder the LMU 216 is composed of one LMU 212 and a control module 2 4 1 ADAPTATION OF THE MONITOR TO THE AVAILABLE SUPPLY UNIT 2 4 1 1 Supply voltage
41. Description 1 transducer input 2 transducer inputs 2 x LMU 212 1 transducer input Voltage Output 1 x 0 10 V 2 x 0 10 V 3 x 0 10 V Current Output 1 x 0 20 mA or 4 20 mA 2 x 0 20 mA or 4 20 mA 1 x 0 20 mA or 4 20 mA Relays 2 4 4 Summation 2 signals 3 signals 4 signals Magtrol Load Monitoring Unit LMU 216 Chapter 1 Introduction Specifications LMU INPUT CHARACTERISTICS TRANSFER CHARACTERISTICS Voltage on Input Voltage Input for Summation of Another Load Input Impedance 70 Max Input Signal dynamic 10V Signal Division by 2 DIP switch selectable Use Without Transducer Jumper selectable Adjustment Power Supply Voltage Transfer Ranges AUo p e 115 230 and 20 32 VDC Voltage jumper selectable Range 1 2 3 48 VAC fixed Bridge Sensitivity 0 42 to 0 78 0 7 to 1 3 1 2 to 2 2 Current Fuse rating mV V 0 6 1 1 7 70 mA for 230 VAC 80 mAT Voltage Transfer 2380 to 1280 1428 to 769 833 to 455 Maximum Current 150 mA for 115 160 mAT gain 1670 1000 588 250 mA for 20 VDC 400 mAT Adjustment 30 30 30 350 mA for 48 400 mAT Bridge signal Range Selection Selectable using DIP switches DIP switch selectable the Supply Vortage 10 DE available sensitivities then Max Possible Current _ 140 mA DC Signal Division by 2 moves from 0 84 to 4 4
42. MAGTROL Load Monitoring Unit LMU 216 User s manual While every precaution has been exercised in the compilation of this document to ensure the accuracy of its contents Magtrol assumes no responsibility for errors or omissions Additionally no liability is assumed for any damages that may result from the use of the information contained within this publication COPYRIGHT Copyright 2012Magtrol Inc rights reserved Copying or reproduction of all or any part of the contents of this manual without the express permission of Magtrol is strictly prohibited First Edition rev D May 2012 MAGTROL Revisions To This Manual The contents of this manual are subject to change without prior notice Should revisions be necessary updates to all Magtrol User s Manuals can be found at Magtrol s web site at www magtrol com support manuals htm tab 2 TabbedPanels1 Please compare the date of this manual with the revision date on the web site then refer to the manual s Table of Revisions for any changes updates that have been made since this edition TABLE OF REVISIONS DATE EDITION CHANGES SECTION 05 22 2012 First Edition rev D adding the inversion to the amplifier adjusts the X 4 Fig 4 3 Fig 4 8 coefficent on MEM783 card appendix A 03 26 2010 Section 4 2 USING B I T E SIGNAL added ev 2 12 09 2009 First Edition rev The micro switch SWB9 must be ON was changed 3 to the micro swit
43. MENT B I T E The built in test equipment B I T E is based on a signal simulating a fictitious load passing through the complete signal amplification chain At each call of the B I T E function see signal C Appendix A the user will be able to check on the various outputs voltage and current as well as on certain relays according to the selected configuration that the load monitoring unit reacts to this fictitious load as if it would be a real load The calibration requires the following conditions e load monitoring unit calibration according paragraph 3 1 or paragraph 3 2 must already have been carried out No load must be applied to the transducer e The micro switch SWBO see figure 3 3 must be on ON The calibration is carried out as follows 1 Connect a digital millivoltmeter between terminals 15 and 9 0 V of the load monitoring unit for the voltage calibration or the milliampermeter between terminals 10 and 9 OV for the current calibration 2 Adjust the potentiometer P9 to obtain a reading of with an accuracy of 20 mV for the voltage calibration or a reading of with an accuracy of 50 pA CAUTION ADJUST THE GET BETWEEN 10 VDC AND 10 VDC IF THIS OUTPUT IS NOT WITHIN THESE LIMITS TURN THE POTENTIOMETER P9 BACK TO ITS HALF WAY POSITION AND CARRY OUT FINE ADJUSTMENT Figure 3 1 shows where the potentiometers P1 to P10 are lo
44. REL1 Figure 2 7 indicates the location of the SWA micro switches on the load monitoring unit board SWA Fig 2 7 Location of the SWA micro switches Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration The following table allows the user to select the energising mode and the hysteresis value for the relay REL1 Configuration Condition Effect SWAA SWA5 SWA6 RELI x dd for ON OFF Detection for lt Ulevelt e BEE ON i Detection for gt revert lt 0 5 OFF Hysteresis lt 50 mV measured on Hysteresis 596 FSD ON Hysteresis 500 mV measured 88 Record the value and the configuration of the micro switches SWAA SWAS and SWA6 on the configuration and calibration form see Appendix A This table allows the user to select the configuration of the micro switches according to the state of the relay REL1 Contact Contact State of relay RELI REL iC RELIA REL1B REL1 energised Closed Open REL1 de energised Open Closed The relay REL also operates as a line check relay and is de energised in case of short circuit or line failure 887 Record the designation of the external signals linked to RELIA REL1B and RELIC on the configuration and calibration form see Appendix A 2 4 4 2 Detection c
45. WB7 SWB8 DC 100 Hz OFF OFF OFF OFF OFF OFF ON ON pi DC 10Hz OFF OFF OFF OFF ON ON OFF OFF DC 3Hz OFF OFF ON ON OFF OFF OFF OFF DC 1Hz ON ON OFF OFF OFF OFF OFF OFF DC 0 3Hz OFF OFF OFF OFF OFF OFF OFF OFF ee Note Record the value of the cut off frequency f and the configuration of the micro switches SWB1 SWB2 SWB3 SWB4 SWB5 SWB6 SWB7 and SWBS on the configuration and calibration form see Appendix A The SWB7 is used only to calibrate the LMU load monitoring unit SELECTION OF THE SENSITIVITY RANGE Figure 2 7 indicates the location of the SWA micro switches on the load monitoring unit board The following table allows the user to select the sensitivity range of the strain gauge transducer Strain gauge sensitivity swai SWA2 SWB10 mV V 0 42 0 78 OFF OFF ON 0 7 1 3 ON OFF ON 12 22 ON ON ON For strain gauge transducers featuring a higher sensitivity than 2 2 mV V see chapter 2 4 8 887 Record the selected strain gauge sensitivity as well as the configuration of the micro switches SWA1 SWA2 and SWB10 on the configuration and calibration form see Appendix A SIGNAL COMBINATION ON THE SUMMER The LMU 216 can be run on its own or connected to up to three other load monitoring units according to the selected application In fact the LMU 216 is fitted with
46. ation mark inside of a triangle is used to inform the user that some important instructions about how to operate and maintain the apparatus are to be found in the THE CALIBRATION ASKS TO OBSERVE THE RELEVANT SAFETY WORKING manual delivered with the unit METHODS PLEASE PAY ATTENTION TO THE SYMBOLS PLACED ON THE LOAD MONITORING UNIT SYMBOLS USED IN THIS MANUAL The following symbols and type styles may be used in this manual to highlight certain parts of the text Note This is intended to draw the operator s attention to complementary information or advice relating to the subject being treated It introduces information enabling the correct and optimal function of the product CAUTION THIS IS USED TO DRAW THE OPERATOR S ATTENTION TO INFORMATION DIRECTIVES PROCEDURES ETC WHICH IF IGNORED MAY RESULT IN DAMAGE TO THE MATERIAL BEING USED THE ASSOCIATED TEXT DESCRIBES THE NECESSARY PRECAUTIONS TO TAKE AND THE CONSEQUENCES THAT MAY ARISE IF THESE PRECAUTIONS ARE IGNORED WARNING THIS INTRODUCES DIRECTIVES PROCEDURES PRECAUTIONARY MEASURES ETC WHICH MUST BE EXECUTED OR FOLLOWED WITH THE UTMOST CARE ANDATTENTION OTHERWISE THE PERSONAL SAFETY OF THE OPERATOR OR A THIRD PARTY MAY BE AT RISK THE READER MUST ABSOLUTELY TAKE NOTE OF THE ACCOMPANYING TEXT AND ACT UPON IT BEFORE PROCEEDING FURTHER 1 Introduction 1 1 GENERAL INFORMATION The LMU series load monitoring units have be
47. cated 3 Put the micro switch SWB9 back on OFF 34 4 4 Applications USING ONE OR SEVERAL LOAD MONITORING UNITS A load monitoring unit can be used as a stand alone or combined with other load monitoring units In the second case the different measuring signals are cascaded and their sum appears on the output of the load monitoring unit at the end of the chain It is however possible to pick up the measuring signal at the level of each element of this chain SiMPLE WEIGHING FOR CRANES WITH TARE ADJUSTMENT Figure 4 1 shows an application with a load measuring pin connected a load monitoring unit LMU 216 monitoring surcharges of a crane hook The LMU 216 taring function is used to monitor the gross as well as the net load measuring pin L Fig 4 1 Simple weighing application 35 Chapter 4 Applications Magtrol Load Monitoring Unit LMU 216 Following functions and signals are available on the LMU 216 Input signal load measuring pin signal e Output signals gross load signal net load signal net load current Relay output thresholds gross load gross overload Q net load net overload Figure 4 2 offers a synthesis of this information in a diagram Maximum gross load threshold Maximum gross overload threshold Maximum net load threshold amp Maximum net overload threshold Transducer U gross LMU 216 1197685 U net Oo
48. ch SWA10 must be OFF 07 01 2009 First Edition rev 0 hysteresis changed to lt 0 5 2 4 4 1 2 4 42 2 4 4 8 and 2 4 4 4 _ 00 0 0 0 0 0 Table of Contents REVISIONS TO THIS MANUAL eiat ioc cena eee aerate rede a l TABLE OE REVISIONS tette eere te RESERVE RARE A AE CR VERRE a I TABLE OF CONTENTS ici ll TABLE OF FIGURES 2 oen nne n HR OH EO Wr b e e Op HER eR its PR ERAGE oc M IV PURPOSE OF THIS MANUAL tb ane ee He Ee EE IR eg Rt EE EA a P ea Re Re aee IV WHO SHOUED USE TIS MANUAL t tete tete t ERE IV MANUAL ORGANIZATION wissen ieee aos SHR el e e Gene ec bet nerit deret te tet teh IV SYMBOLS USED IN THIS MANUAL disks V WARNING ove E dts V T INTRODUCTION ics 1 GENERALE INFORMATION 2 5 2 ee ite OU Ses 1 1 2 SHEE T e 2 2 INSTALLATION CONFIGURATION inis ccena ee iesu och ein ice ent c IRR e 7 2 GENERAE INFORMATION aprann inon a Ree E ee pub d e e D Pe pet ete her cede bs 7 2 2 INSTALLATION OF THE LMU 216 LOAD MONITORING UNIT eese eene rennen 7
49. cro switch on position 5 He then turns the potentiometer to get an output voltage Ug of 0 5 V wit an input voltage set on 1 V Note Record the value of the coefficient X on the configuration and calibration form see Appendix A CAUTION AFTER HAVING ADJUSTED THE COEFFICIENT X PLACE THE MICRO SWITCH OFF CAUTION TO MAKE THE LOAD MONITORING UNIT OPERATIONAL PUT THE MICRO SWITCH 5 10 on ON TARING CIRCUIT CONFIGURATION The LMU 216 is fitted with a taring circuit By using the external controls AUTO ZERO terminal 42 and COM TAR terminal 40 the measured signal can be brought back to zero This new value called NET is available on the output TARING O P terminal 38 The output TARING O P follows the rule NET BRUT TARE ENTER ATARE To add a tare to the measured signal short circuit the input COM TAR terminal 40 with the input V terminal 41 for at least 1 s TARE To remove the tare from the measured signal short circuit the input AUTO ZERO terminal 42 with the input O V terminal 41 for at least 1 s TARE SIGNAL SELECTION The following table lists the various signals which can be selected on the taring circuit input Taring circuit input signal SWD6 SWD7 JP41 Amplified transducer signal C1 ON OFF Summer output signal 22 OFF ON ON Comparator output signal optional OFF ON OFF Taring system decommissioning OFF OFF
50. d U 3 1 Connect a digital millivoltmeter between terminals 15 and 9 0 V of the load monitoring unit 2 Adjust the potentiometer P9 to obtain a reading of With an accuracy of 20 mV Figure 3 1 indicates where the potentiometers P1 to P10 are located 3 Turn the potentiometer P12 slowly until the LED of REL3 goes on the detection level will then be switched off Figure 3 4 indicates where the potentiometers P12 to P15 and this LED are located 4 Turn the potentiometer P12 slowly until the LED of REL3 goes off the detection threshold is now reached Adjustement potentiometers REL3 LED REL4 LED Fig 3 4 Location of the relays REL3 and RELA and of the adjustment potentiometers 887 Record the values and Fj 44 on the configuration and calibration form see Appendix A 3 5 4 Adjustment of the detection threshold 1 Connect a digital millivoltmeter between terminals 15 and 9 0 V of the load monitoring unit 30 Magtrol Load Monitoring Unit LMU 216 Chapter 3 Calibration 2 Adjust the potentiometer P9 to obtain a reading of with an accuracy of 20 mV 3 Turn the potentiometer P14 slowly until the LED of REL4 goes on the detection level will then be switched off Figure 3 4 indicates where the potentiometers P12 to P15 and this LED are located 4 Turn the potentiometer P14 slowly until the LED of REL4 goes off
51. ds cable 5 to 12 mm LM o Model _ Weight OVERHEAD VIEW SIDE VIEW LMU 212 2 kg LMU 216 AND LMU 217 T s a esce e FRONT VIEW M6x30 i an 1 a mm Sealed diecast 287 aluminum box 272 190 175 18 220 12 10 90 27 30 35 Model Weight LMU 216 4 kg LMU 217 3 750 kg OVERHEAD VIEW NA ACS TROL via ce p FH FH Stuffing glands max PG 11 cables 5 to 12 mm 212 Aje I Chapter 1 Introduction Magtrol Load Monitoring Unit LMU 216 Ordering Information LMU ORDERING INFORMATION LOAD MONITORING UNIT P N 224 000 Model T LMU 212 1 input 212 LMU 216 1 input 216 LMU 217 2 inputs 217 Supply 115 230 50 60 Hz or 20 32 VDC 0 48 VAC 50 60 Hz 4 Balancing comparator option only for LMU 216 LMU 216 No 11 Yes 61 LMU 212 No not available 11 LMU 217 No not available 11 Configurated and calibrated No standard blank Yes accordin
52. e 40 C to 80 C Output specific application Soie Temperature 45 C to 85 C det REL2 det Uo F rotection class a A Bor A B A Bor A B A or A B A Bor A B Vibration and Shock According to IEC 68 2 EMC According to EN 61326 1 A bride signal B voltage input and EN 61326 2 3 MECHANICAL CHARACTERISTICS SAFETY CHARACTERISTICS B I T E test signal Built In Test Equipment Housing Material Load simulation on request a Signal type calibrated during the Stuffing glands installation LMU 212 3 x PG 11 Logic signal active low CMOS Type and number LMU 216 and 217 6 x PG 11 Control TTL compatible Material Nickel plated brass Reliability Terminal strip MTBF 1 500 000 hours Type MK8 screw and connection at 45 AWG 20 to 16 Cross section 0 5 to 1 5 mm 9 0 00077 to 0 0023 in ADDITIONAL LMU 216 FUNCTIONS Number of Inputs 4 UA UB UC and UD Volatile digital memory at 12 bits Input Voltage 410 V memory reset at startup the stored UE1 UA UB UC UD X digital value is substracted from the m inci input signal after D A i Output Voltage X adjustable between 0 25 and P i DORT 10 Current interruptions lasting for less than 30 ms do not lead to the loss of the LATCHING stored calibration value Control Using DIP switches Resolution 1 4096 of the select
53. ed range Reset Signal RESET REL3 RESET REL4 Storing Time lt 25 Output Impedence lt 200 Q Acceptable Load Resistance 22080 BASIC CONFIGURATION The LMU Load Monitoring Unit offers unlimited configuration possibilities It is impossible to list them all in this data sheet Please contact Magtrol or one of its subsidiaries or sales agents to discuss your specific applications Strain Gauge Relay Output Contacts Transducer e LMU 212 117 2 per channel RE1 RE2 e LMU 216 4 RE1 RE2 RE4 Voltage Input 10 LMU Input OK I P 3 Load oa Power Supply ALLE OK Output OK O P 115 230 VAC 50 60 Hz Monitoring 20 32 VDC Unit Current Output 0 20 mA or 4 20 mA S48 VAG Voltage Output s x10 V LMU 216 only LMU212 1 Summer with 4 Voltage Inputs 10 V LMU216 3 e LMU 217 2 3 MMA ACS TROL Magtrol Load Monitoring Unit LMU 216 Chapter 1 Introduction Dimensions miis LMU 212 Mounting screw M6x30 fH Sealed diecast aluminum box 122 82 220 204 20 75 HE STR 1______6 21 Stuffing glan
54. en specially designed for applications using load pins with strain gauge sensors This range of monitoring units offer a large degree of flexibility for the implementation of load measuring systems Three models of load monitoring units are available e LMU 212 basic model e LMU 217 model combining two LMU 212 placed side by side e LMU 216 model combining one LMU 212 and a control module 987 Only the model LMU 216 will be described in this manual The LMU 212 and LMU 217 are the subject of one manual entirely dedicated to them The specially robust design of these units allows monitoring load limits in the most challenging environments Chapter 1 Introduction Magtrol Load Monitoring Unit LMU 216 1 2 DATA SHEET LMU Series Load Monitoring Units FEATURES e For use with full bridge strain gauge transducers sensitivity 0 5 to 4 mV V Voltage input for load summation or for individual use without sensor e 2 to 4 level detectors with relay output contacts 0 20 mA or 4 20 mA DC current output e 10 V voltage output s Provides continuous detection of signal line failure and short circuits OK signals e Includes integrated test equipment B I T E with continuous power supply monitoring Compatible to CE Standards IP 65 aluminum housing Features of LMU 216 only e 4 level detectors with output contacts 2 of them with programmable memory Summer
55. ert Level detectors min 105 at 4 A 250 V AC Number of Detectors 1 per relay Level Adjustment Range 10 to 10 VDC using multi turn potentiometer measured on voltage output Hysteresis 0 596 or 5 DIP switch selectable Detection Indication or DIP switch selectable Lifetime 108 unloaded Contact Resistance lt 20 Current Output Output Type Current generator Nominal Current Range 0 to 20 mA DC Max Current Range 0 to 25 mA DC Switching Delay Max Load 500 Q for Imax 20 mA Output Impedance gt 50 Voltage Output Delay Adjustment Range 0 01 to 4 25 seconds adjustment for every relay by multi turn potentiometer Max Dynamics 10V EM Max Load 210 2 lt 0 5 21 e lt 5 Output Impedance 50 Q in series Output for Auto diagnostic Feature OK O P Type Open collector 2 NOTE To guarantee precise calibration the impedance of the connected unit must be indicated at time of order If this value is unknown an impedance of 1 will be used for calibration The resulting deviation will be X596 with an impedance 22 or lt 1 with 210 MAGTROL Chapter 1 Introduction Magtrol Load Monitoring Unit LMU 216 Snecifications LMU Application selection Operating Temperatur
56. g to application and Magtrol Configuration and Calibration Protocol C Due to the continual development of our products we reserve the right to modify specifications without forewarning 25 www magtrol com MAGTROL INC MAGTROL SA Subsidiaries in 70 Gardenville Parkway Centre technologique Montena Great Britain Buffalo New York 14224 USA 1728 Rossens Fribourg Switzerland Germany France 3 Phone 1 716 668 5555 Phone 41 0 26 407 3000 China India oN 1 716 668 8705 41 0 26 407 3001 Worldwide Network _ UD 5 E mail 9 magtrol com E mail magtrol magtrol ch of Sales Agents insu e 5 6 2 Installation Configuration 2 1 GENERAL INFORMATION Itis essential to follow and apply the installation and configuration procedure described in this chapter to avoid any perturbation of the measuring signal processed by an incorrectly installed LMU 216 88 The procedures described in this chapter do not cover all mounting and connection possibilities However they can be used as a guide for further customer specific applications In case of doubt the user should not hesitate to contact Magtrol s customer service to find a solution offering the best guaranty for optimal measuring accuracy 2 2 INSTALLATION OF THE LMU 216 LOAD MONITORING UNIT For optimal operation the load monitoring unit should be run at temperatures between 40 C and 80 C P
57. hain for relay 2 REL2 Figure 2 7 on the previous page indicates the location of the SWA micro switches on the load monitoring unit board The following table allows the user to select the energising mode and the hysteresis value for the relay REL2 Configuration Condition Effect SWA7 SWA8 SWA9 e PEL p Ter s One OFE I Detection for lt BEL m for OFF ON Detection for gt Ulevel2 Hysteresis lt 0 5 OFF Hysteresis lt 50 mV measured on Hysteresis 596 FSD ON Hysteresis 500 mV measured on Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 887 Record the value and the configuration of the micro switches SWAT SWA8 and SWA9 on the configuration and calibration form see Appendix A This table allows the user to select the configuration of the micro switches according to the state of the relay REL2 Contact Contact State of relay REL2 REL2A REL 2 REL2A REL2B REL2 energised Closed Open REL2 de energised Open Closed The relay REL2 also operates as a line check relay and is de energised in case of short circuit or line failure 88 Record the designation of the external signals linked to REL2A REL2B and REL2C on the configuration and calibration form see Appendix A Magtrol Load Monitoring Unit LMU 216 Chapter
58. ion prepaid MAGTROL ASSUMES NO RISK FOR IN TRANSIT DAMAGE THE FOREGOING WARRANTY IS PURCHASER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR USE MAGTROL SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSS WHETHER IN CONTRACT TORT OR OTHERWISE CLAIMS Immediately upon arrival purchaser shall check the packing container against the enclosed packing list and shall within thirty 30 days of arrival give Magtrol notice of shortages or any nonconformity with the terms of the order If purchaser fails to give notice the delivery shall be deemed to conform with the terms of the order The purchaser assumes all risk of loss or damage to products upon delivery by Magtrol to the carrier If a product is damaged in transit PURCHASER MUST FILE ALL CLAIMS FOR DAMAGE WITH THE CARRIER to obtain compensation Upon request by purchaser Magtrol will submit an estimate of the cost to repair shipment damage 50 Service Information RETURNING MAGTROL EQUIPMENT FOR REPAIR AND OR CALIBRATION Before returning equipment to Magtrol for repair and or calibration please visit Magtrol s Web site at http www magtrol com support rma htm to begin the Return Material Authorization RMA process Depending on where the equipment is located and which unit s will
59. ionaj 4 NM 5 725 RE oru TAY T 9 m EN soea Lo 440 m t 100 60 15 orams usnray cau 13539 Y m leis saa Wr e venu wo aso grena gt 4 are a oF KS ON 440 e dion M Avaa 83MS LIMS 9 Eld ol NJ 4 2 4 y 124 i3 rav Ava 4 od 30 NO ocu cuu Pas v ZIMS 90 20 5 on NO 330 NO toca uo v voz mm an om NO NO 330 zes erz z an NO 440 330 50 66v L 0 0 330 330 330 NIN IN sams rams 1 10134300 LMS on vn ran 1 amp za 9021 d O 43WiWns 195530 NIVO FEl gt UE Lams 92 T d O QNVIWWOO Av 13H 135550 DR aia arant 9 spar yi E 3 Hx H x ma LJ St 2x pax 95 o z3 pear eams SN 10MS Na LMS 3INVN IWNOIS IWNYSLX3 gE J o lt 15 HD ONRHVE 1Snrav 1N3I9144300 X dil VNSIS 9 L INS 139440 1 A X10 000 91c v22 Ouaz olnv NM Ste na SVN TWNOIS TVNH3 LX3 47 L eed LLOLOOO 9LC VE NOILVHSITVO ANY NOILLVHOOIJNOO
60. iption of the test bench drawing photographs sketches etc Description of the tested object drawing photographs sketches etc Description of the test cycle To allow Magtrol to complete the work in the best possible time follow the procedure outlined below IS Carefully pack the load monitoring unit Attach the product defect report indicating the problems encountered Note Do not hesitate to contact Magtrol s after sales service for additional information 45 Appendix Configuration and calibration report The configuration and calibration report for the LMU 216 224 216 000T011 load monitoring units joined in this appendix have to be filled in with the utmost care and placed in the load monitoring unit housing under its cover When the unit needs repairing attach a copy of this report This will allow the engineers to carry out the work in the shortest possible time 46 Appendix A Configuration and calibration report Magtrol Load Monitoring Unit LMU 216 OZ 9 6b 4L OF Sb 6 8 49 Zz 9 20 00 201 22 Nid HOLVHVdlWOO SNIONV IV8 ONY YIWWNS
61. mV V Sensitivity 0 5 to 4 mV V according to the selected Max Dynamic range Component of Bridge 45 mVDC Coarse adjustment using multi Signal turn potentiometer equivalent Max Common Mode inv Measuring Chain Zero to 10 V output for range 3 Fine adjustment using multi turn potentiometer 5 of the coarse adjustment Temperature drift of the transfer function lt 200 ppm C Temperature drift of the measuring chain zero value lt 200 ppm of FSD C for 0 5 mVN at the input lt 1 Input for Auto diagnosti c Feature OK Current transfer range Active if short circuited Type Relay Outputs OUTPUT CHARACTERISTICS Number of Relays LMU 212 2 LMU 217 4 2 per input LMU 216 4 Sensitivity Range with Multi turn Potentiometer 20 of FSD on Nominal Current Range 0 to 20 mA DC Max Current Range 0 to 25 mA DC Zero Adjustment Range 5 DC for lo p 2 5 mA DC Relay Behavior Configurable with DIP switch Selectable low pass filter Filter Type Butterworth Filter Order 2 4 A at 250 V AC Max Current per Contact 3 A at 30 V 0 5 A at 48 V DC Max Voltage per AC 250 Vert Contact DC 48 VDC Contact Rating 90 W or 1000 VA 3 dB Cut off Frequency Selectable using DIP switches 0 3 Hz 1 Hz 3 Hz 10 Hz 100 Hz Insulation Voltage Contact contact 750 Vert Contact coil 1 5 kV
62. nt of the detection threshold Ue e t 29 3 5 2 Adjustment of the detection threshold Ue e e 29 3 5 3 Adjustment of the detection threshold Usa ee e e 30 3 5 4 Adjustment of the detection threshold Uc e 30 3 6 ADJUSTMENT OF THE SUMMER COEFFICIENT X esent rennen rennen ee neenrenne enne nnne 31 37 TARING CIRCUIT CONEIGUSRATION eene et ae rre aia PEERS EYE trees rro e ee ia EA 32 3 Enter TARE seo m oie eate ea no e eden 32 3 722 Remove the eed ead E ee c ttes bnt ip tee bet RE eeu ee 32 3 429 TAREsignalselection dede ede t edel ura 32 3 7 4 Taring control circuit connection 1 neret rennen 33 3 8 CALIBRATION OF THE BUILT IN TEST EQUIPMENT B LT E eene eene 34 Magtrol Load Monitoring Unit LMU 216 Table of Contents 4 APPLICATIONS i i a e Penn atia ad 41 USING ONE OR SEVERAL LOAD MONITORING UNITS 4 1 1 Simple weighing for cranes with Tare nennen 412 Multi transducer weighing for container gantry eene eene 39 427 USING B E E E SIGNA nanna ea age he eiae e iba eed a rA Reeves 41 5 T ME UR 45 2 TROUBDEESSHOONTINGE itte rrt terit op en eph e o rad ct ede 45 APPENDIX A CONFIGURATION AND
63. o no Y cias HOLOVS T Bor o 40 440 No No 410 NOISING NI NOISIAId NS L an green gt wo vo N NO NO 240 240 440 14000 I V t Wat 35118 ALIALLISN3S 9 19 S IH SN3S 8 v TM ONY 03185 ALIALLISN3S Z X Ny 4 02 1 NOLLO3 3S SSVd QNV8 24 won sar zar 5 Lan SOINS NI egeo Me JOMINOO assi ed amp ege a sons ii surgo 1eonpsuei 10u1NOO T INA Ajoedeo jeonpsuei JENS VAU AiAnisues 1eonpsuei 44 5 1 5 Repair TROUBLE SHOOTING In case of a defect requiring repair it is very important to include the product defect report and the following information Model number part number serial number order number and date of purchase Description of the defect and the conditions in which it appeared Configuration and calibration report Descr
64. osed Open REL3 de energised Open Closed Record the designation of the external signals linked to REL3A REL3B and REL3C on the configuration and calibration form see Appendix A Detection chain for relay 3 REL4 Figure 2 8 indicates the location of the SWE micro switches on the load monitoring unit board The following table allows the user to select the energising mode and the hysteresis value for the relay RELA Configuration Condition Effect SWE3 SWE4 SWE5 SWE6 Xx REL4 de energised for F lt OFF ON Detection for lt REL4 de energised for F gt OFF Detection for gt Uleveia Hysteresis 0 5 E SUMI measured on Hysteresis 5 FSD ON measured on X No latching OFF __ _ Relay switching after the alarm has gone off Latching ON __ u No relay switching after the alarm has gone off Record the value and the configuration of the micro switches SWE3 SWE4 and SWE5 SWE6 on the configuration and calibration form see Appendix A This table allows the user to select the configuration of the micro switches according to the state of the relay RELA 557 Contact Contact State of relay REL4 REL4A RELAC REL 4A RELAB REL4 energised Closed Open REL4 de energised Open Closed
65. ppendix A 2 4 8 DIVISION OF THE TRANSDUCER SIGNAL OR THE INPUT VOLTAGE Uy BY TWO The LMU load monitoring unit allows the user to divide the transducer signal or and the voltage input Uyp by two This can for instance happen in the case of an application B with A as the transducer signal and B as the voltage Uyp with the signal at its maximum the sum will generate an output voltage exceeding 10 VDC when the transducer signal is too big between 2 and 4 mV V the load monitoring unit gain can be divided by two Figure 2 12 indicates the location of the SWB micro switches on the load monitoring unit board Figure 3 2 in chapter 3 indicates the location of the SWC micro switches Transducer Voltage input signal A SWB10 B SWC10 Divided by 2 2 OFF Divided by 2 2 ON Full 1 ON Full 1 OFF As a reminder the input signal must remain within 10 VDC and 10 VDC 887 Record the SWB and SWC micro switch configuration on the configuration and calibration form see Appendix A 2 4 9 SELECTION OF THE X COEFFICIENT RANGE The following table allows the user to select the X coefficient range used in the following formula Ug Up Uc Up X The load monitoring unit voltage output features a maximum range of 10 V and 4 voltage signals with a range of 10 V can be connected to the summer inputs The X coefficient preven
66. ring unit board P12 to P15 20 Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration The switching delays D1 D2 D3 and D4 are applied to the relays REL2 REL3 and RELA The method of adjustment is as follows To determine the switching delay value calculate the number of turns to be applied to the potentiometers using the following formula _ D 0 01 0 170 Avec N number of turns to be applied to potentiometer D switching delay required for the relay in seconds Dai 0 015 Da 4 25 5 Apply the calculated number of turns N by counting them starting at 0 the potentiometer at its limit stop in the anti clockwise sense and by turning the potentiometer clockwise To reach the limit stop make more than 30 turns anti clockwise IESE Note Record the switching values of D1 D2 D3 and D4 on the configuration and calibration form see Appendix A 2 4 5 SELECTION OF THE PASS BAND Figure 2 12 indicates the location of the SWB micro switches on the LMU 212 load monitoring unit board SWB micro switches Fig 2 12 Location of the SWB micro switches on the load monitoring unit board 2 Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 2 4 6 2 4 7 The following table allows the user to select the pass band of the output signal fc frequency range SWB1 SWB2 SWB3 SWB4 SWB5 SWB6 S
67. roceed as described in the following points to mount and connect a LMU 216 1 Select a suitable mounting place free of vibrations An instrument support for instance offers excellent results 2 Trace the location of the 4 screw taps on the mounting surface 3 Drill and tap the 4 holes for the M6 mounting screws The taps depth must be approximately 15 mm 4 Removethe cover ofthe load monitoring housing The LMU 216 cover is fixed with 6 screws see figure 2 1 5 Position the housing on the mounting surface and fasten the 4 M6 x 30 mounting screws by applying a fastening torque corresponding to the type of screw used 6 Configure and calibrate the load monitoring unit if not already done according to the procedure described in this chapter 7 Carry out the necessary electrical connection and make sure that the housing stuffing glands are water tight 8 Insert a copy of the calibration protocol see Appendix A into the load monitoring unit housing before placing the cover back onto the housing and fastening its screws Chapter 2 Installation Configuration Magtrol Load Monitoring Unit LMU 216 Load monitoring unit cover Housing M6 x 30 fixing screw Load monitoring d unit housing M6 washer Tap on the mounting surface S Fig 2 1 Installation of the LMU 216 load monitoring unit Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration 2 3 CONNECTION OF THE LMU
68. ts the saturation of the load monitoring unit by damping the summer output signal The fine adjustment of this coefficient will be discussed in the chapter handling the load monitoring unit calibration Figure 2 13 on the previous page indicates the location of the SW1 micro switch on the load monitoring unit board SW1 X Coefficient Position Minimum Maximum 24 Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration 1 4 99 10 5 2 2 49 5 32 3 1 21 2 84 4 0 57 1 31 5 0 24 0 61 88 Record the SW1 micro switch configuration on the configuration and calibration form see Appendix A 25 3 Calibration CAUTION CHAPTER 3 1 AND 3 5 DESCRIBE THE PARAMETRISATION OF THE TRANSDUCER CONNECTED TO THE LMU 212 AS WELL AS THE RELAYS LATCHING LEV ELS ACCORDING TO THE CONFIGURATION THE EXTERNAL INPUTS U11 P UBi P Uci P CAN HAVE AN INFLUENCE ON THE OUTPUTS THEREFORE IT IS NECESSARY TO CHECK THAT THEY ARE DE ACTIVATED SEE DIAGRAM IN APPENDIX BEFORE POWERING UP AND WIRING THE LMU 3 1 ZERO ADJUSTMENT ON THE VOLTAGE OUTPUT The following conditions are required for the zero adjustment on the voltage output Noload must be applied on the transducer The micro switch SWB9 see figure 3 3 must be OFF e The micro switch SWC2 see figure 3 2 must be ON e The jumper JP33 must have been removed
69. uts one voltage and one current output on the LMU 212 module Up and Ip as well as two voltage outputs on the control module The main voltage output delivers the conditioned signal supplied by the load measuring pin connected to the load monitoring unit According to the jumper position the current output delivers either the conditioned and current converted signal supplied by the load measuring pin or the current converted signal corresponding to the net or the gross load Chapter 2 Installation Configuration Magftrol Load Monitoring Unit LMU 216 2 4 4 2 4 4 1 557 The signals the control module voltage outputs correspond to the net load TARINGo p and to the sum of the gross loads Ugoy p Note Record the designation of the external signals linked with Uyp Uap Ucup and Upyp 45 well as 5 5 and on the configuration and calibration form see Appendix A CONFIGURATION OF THE DETECTION CHAINS The load monitoring unit relays are used to detect under and overloads In case of an overload the relay is de energised when the output voltage is lower than the threshold voltage In case of an underload the output voltage must be higher than the threshold voltage to de energise the relay We shall come back to the adjustment of the threshold voltage when calibrating the load monitoring unit Detection chain for relay 1
70. w of the application fields INSTALLATION CONFIGURATION Contains the mounting and configuration explanations for the load monitoring unit LMU 216 CALIBRATION Describes the calibration procedures of the zero sensitivity and relays detection level of the load monitoring unit LMU 216 APPLICATIONS Describes two examples of applications for one load monitoring unit LMU 216 In the first example only one transducer is used in the second four of them are used REPAIR Contains solutions to problems encountered with LMU series load monitoring units CONFIGURATION AND CALIBRATION REPORT Contains the configuration and calibration report of the LMU 216 which must be filled in with great care when installing the load monitoring unit CE CONFORMITY DECLARATION Contains the CE conformity declaration of the MAGTROL LMU series load monitoring units Magtrol Load Monitoring Unit LMU 216 Preface WARNING AN AN ELECTRIC SHOCK HAZARD The lightning inside of a triangle indicates the presence of dangerous non insulated components in the apparatus which may expose the user to electric shocks WARNING THE INSTALLATION AND CALIBRATION OF THE LMU UNIT MUST BE CARRIED OUT BY SUITABLY QUALIFIED AND TRAINED PERSONNEL PLEASE READ THIS MANUAL BEFORE INSTALLING AND CALIBRATING THIS LMU UNIT AND FOLLOW CLOSELY THE OPERATING INSTRUCTIONS THE WIRING MUST ONLY BE CARRIED OUT WHEN THE MAINS ARE SWITCHED OFF The exclam
71. when the unit is powered up M i Fig 2 5 LMU grounding when using a 230 115 or 48 VAC supply Connect the earth wire to the ground screw and the LMU terminal no 18 to the ground screw STOP WARNING WHEN USING A 48 115 230 VAC SUPPLY ALWAYS MAKESURE THAT THE LMU HOUSING IS ADEQUATELY CONNECTED TO THE GROUND Magtrol Load Monitoring Unit LMU 216 Chapter 2 Installation Configuration 2 4 2 2 4 3 SELECTION OF THE TYPE OF WIRING TO THE STRAIN GAUGE The choice of the type of wiring depends on the length of the cable between the LMU and the strain gauge transducer on the impedance of the transducer and the linear resistance of the cable If the linear resistance of the cable is X0 1 the impedance of the strain gauge transducer is 2200 Q and the length of the cable is X100 m the wiring of type 1 can be selected see figure 2 6 The wiring of the type 2 of figure 2 6 applies to cable lengths of more then 100 m or when the cable length has been changed after the calibration of the load monitoring unit
72. ystem part 1 of 2 T Fig 4 9 Configuration and calibration protocol for a multi transducer weighing system part 2 of 2 44 Preface PURPOSE OF THIS MANUAL This manual has all the necessary information regarding the installation connection calibration and use of Magtrol s LMU 216 load monitoring unit To achieve maximum capability and ensure proper use of the system please read this manual in its entirety before operating Keep the manual in a safe place for quick reference whenever a question should arise WHO SHOULD USE THIS MANUAL This manual is for users who wantto install and use the load monitoring unit LMU 216 for processing data generated by load measuring pins The user should have suitable technical training in mechanics and electronics so as to allow him to install and use this load monitoring unit without risk MANUAL ORGANIZATION This section gives an overview of the structure of the manual and the information contained in it Some information has been deliberately repeated in different sections of the document to minimize cross referencing and to facilitate understanding through reiteration Summary of the different chapters Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Appendix Appendix B INTRODUCTION Contains the technical data sheet of the load monitoring units LMU 216 and gives its technical characteristics as well as a brief overvie

LMU 216 - Magtrol

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