LCI Load Cell Junction Box with Fault Monitor Manual
Contents
1. LCI Load Cell J unction Box with Fault Monitor User Manual mantracourt com mE mantracourt The LCI Load Cell Failure Alarm Manual Chapter 1 Introduction to the LCl ooocccooccconcnnancanancnnancanancnnan cana nar a a ra nr rr arras Chapter 2 Installing the LCI oocoonccccnccnancnnancnna nana euina aikanani TAEPA PAIN rr Figure 2 1 LCl C nnection Detalla E a td aaa ed Table 2 1 LCI Connections to LCB amp ADW15 Details 0 nent ened Chapter 3 Setting up the Ll aeeie raaa ae a e e EAE EEI OEE adaa AE Faaa a EES Sequence Of Operations ac PrOGraMIMer KeYSi 5 tances A Viana Sada aah Mca Seca Sc ead Saeed ae aaa AN Tab leek eisai cit a ee ce eke Ae AER ate Se teint aaa alee aaa E E Password Protection seir ph siens ie ets Configurable Parameters mrenani ea Oe ee a AP Table Li dda steerer etree io ta E The Error Displays onthe LCM vivant oia A A a a i Abas The Millivolt Display readings on the LCl ooococcccocccconconconnonnonno naco rttr ttnn rE EEE EEEEEEEEEEEEE EREEREER EREEREER EEEE Chapter 4 The Specifications and Parameters of the LCl sssssssssssnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn Specification a e eo das ag eo e a I cal AN Les nse See oak aE a Glance E AEE EAEE da daaces aula oaca la Ea E aa ciau meas sdar aaa Ea aaa lates Wiring CONDITIONS vascssavacacctarerxdasavieaneianesa set Anja WARRANT Wats comic Predera A anced vedere a Seta Caleta id Mantracourt Electronics Limited LC1 User Manual Chap2. Min operating ranges ERA Error Condition 4 The load cell balance has exceeded the pre set balance band BAL Check wiring cell mounting Error band values ErS Error Condition 5 Open circuit of the excitation on the load cell or connectors Check wiring Mantracourt Electronics Limited LC1 User Manual Notes 1 An open or short circuit may cause multiple errors The display will cycle through multiple errors displaying each code for 1 second 2 To locate faults start with the load cell which displays the most errors 3 The SETTINGS button to automatically step through the parameters and their values During this function all other keys are disabled 4 A healthy unit will show red LED OFF fault condition ON The Millivolt Display readings on the LCI To view the average of all of the load cell signals press the mV button To view the individual load cell signals hold down the mV button and at the same time press the buttons 1 to 4 to select each load cell required 6 Mantracourt Electronics Limited LC1 User Manual Chapter 4 The Specifications and Parameters of the LCI Specifications Faults Monitored Load Cell out of preset balance range Load Cell out of pre set operating range Low high excitation Open circuit to any load cell on each connection Short circuit on any load cell connection Internal load cell fault Bridge Imbalance Powering Indication Setting Meth
3. Range 50 00 50 00 mV Relay contacts SPCO normally energized 500 mA Relay contacts SPCO normally energized 50 V Alarm operating speed for less than 1mV change 100 mS mV measurement accuracy individual cell 15 15 mV accuracy average reading 2 2 Mantracourt Electronics Limited LC1 User Manual CE Approvals European EMC Directive 2004 108 EC BS EN 61326 1 2006 BS EN 61326 2 3 2006 Wiring Conditions Load Cell and indication instrument cable connections should use individually screened twisted multipair cables e g FE585 646 Terminate all screens at SCR SCR should be connected to a good Earth The earth connection should be of sufficient cross sectional area to ensure a low impedance to attenuate RF interference WARRANTY All LCI products from Mantracourt Electronics Ltd Mantracourt are warranted against defective material and workmanship for a period of 3 three years from the date of dispatch If the Mantracourt product you purchase appears to have a defect in material or workmanship or fails during normal use within the period please contact your Distributor who will assist you in resolving the problem If it is necessary to return the product to Mantracourt please include a note stating name company address phone number and a detailed description of the problem Also please indicate if it is a warranty repair The sender is responsible for shipping charges freight insurance and proper packaging
4. ing range Maximum see 2 po Alt 0 to 50 00 Permissible Error band between load cells see 3 AJL E 0 to 25 0 Time before Alarm trip set in seconds see 4 a4 This is the lowest operating level in mV of any load cell connected The alarm will activate if any load cell falls below this value 2 This is the highest operating level in mV of any load cell connected The alarm will activate if any load cell exceeds this value 3 This is the permissible difference in mV between any 2 load cells The alarm will activate if this value is exceeded 4 This is the time in seconds an error must be present before the error alarm is displayed and output via the relay The Error Displays on the LCI Note On Power Up the display will show either good or Er Listed below is the range of errors which could occur due to fault conditions on the weighing system load cells and associated wiring Display digits 1 shows which load cell is in error Digits 2 and 3 show an error by displaying Er Display digit 4 displays any of 5 fault conditions as follows Er Error Condition 1 An open or short circuit on the load cell or connectors Check wiring and power supply Ere Error Condition 2 The load cell input is open circuit or exceeded 50mV Check wiring and power supply Er3 Error Condition 3 Operating outside the pre set maximum and minimum range Lo r amp Hi r Check wiring cell mounting Max
5. isplay of the mV V value of each load cell or the average of the summated mV V value of all the load cells 2 Mantracourt Electronics Limited LC1 User Manual Chapter 2 Installing the LCI The LCI is provided as single PCB unit prepared with 4 fixing centres to accommodate M4 screws Case options are IP65 ABS as standard Stainless steel or DIN rail mounting Installation of the LCI is simplified by the provision of separate 2 part plug in connectors for each of the load cell cables the indication I O and alarm relay Connection details are shown in the diagrams below Figure 2 1 LCI Connection Details 200mm Fixing centres of M4 188 x 89mm e 20008 200000 oaoa mV Display 4 EX 9 Sor S Ex EX S Sor 3 Ex amp set up 1 2 switches mV E 0 20 Ud E 120mm O EX 3 Ser S Ex EX S Scr 5 Ex maa Alarm 00000 jpaddo LED cr SSSA oaaao Alarm normally Note 2 part plug in connectors can energized be removed in order to wire 75mm Depth Alarm Load Load Cell Inputs Relay Cell Output 6 x IP65 Glands for cable size 4 5 to 7mm Important Note If connecting less than 4 load cells to the LCI start at connector block 1 then 2 3 and through to 4 Table 2 1 LCI Connections to LCB amp ADW15 Details LCI LCB ADW15 EX tE amp 45 5 amp 6 5 HN 4 Scr SCR 1 S IN 3 Ex E amp S 1 amp 2 Mantracourt Electronics Limited LC1 User Manual Chap
6. od By Load Cell Excitation typically 10v DC 1 x 4 digit 7 segment LED display for set up load cell in error type amp individual total mV outputs 6 buttons for reading amp set up Connections 2 part terminals up to 2 5mm cable 4 x 5 way for load cell connection 1x 5 way load cell output 1 x 3 way alarm relay contacts Dimensions Environmental Enclosure Material 200 x 120 x 75mm PCB dimensions 170 x 100mm excluding mounting material Sealed to IP65 with cable glands blanking plugs fitted CE Compliance Grey ABS Parameters Min Typical Max Units Power supply volts from excitation supply 8 2 10 12 Vdc Power supply current from excitation supply 1 43 52 mA Bridge excitation 350R load cell 8 10 12 V Bridge resistance typically 350 700R each 300 350 1000 ohms Bridge sensitivity 1 0 2 0 5 0 mV V Bridge No selectable 1 4 Bridges Output load 1M 100G ohms Bandwidth of J unction Box 100 Hz Zero temperature co efficient of J unction Box 2mV V 0 0005 0 0 0005 W C Span temperature co efficient of J unction Box 0 0005 0 0 0005 Wd C Linearity of J unction Box 0 0015 0 0 0015 amp SD 90 day Stability of J unction Box 0 001 0 0 001 90 day Stability of J unction Box 0 001 0 0 001 FSD Operating temperature range 40 85 C Storage temperature range 40 95 C Humidity 95 Scan Speed for alarm output 4 cells 40 100 mS Display
7. ter 1 Introduction to the LCI Mantracourt Electronics have introduced the low cost Load Cell Failure Alarm to provide connection between 1 and 4 load cells to a weighing system creating a means of constantly monitoring the condition of individual load cells Continuous diagnosis of fault conditions prevents the incorrect weighing of product and the subsequent technical and commercial problems resulting from such situations The benefits of the junction box are that any load cell malfunction is immediately reported by an alarm condition avoiding incorrect material levels so that there isthe continued assurance of correct product quantities The avoidance of batch wastage or product recall reduction in plant downtime and increased safety together with aids for installation and commissioning all contribute to the LCI becoming an essential element for all weighing systems An on board microprocessor provides for a high level of intelligence the LCI is therefore able to offer a useful range of features 1 Load detection An alarm contact will change state the Red Alarm LED will indicate and the display will show the load cell in error and the error code An error is detected in any of the following occur e One or more of the load cells are out of balance with the pre set error band e Any load cell is operating outside its pre set range e The load cell excitation voltage drops e Any of the load cells become open or short circuit 2 A d
8. ter 3 Setting up the LCI The LCI features a 4 digit Red LED display where all the various conditions are displayed and 4 programming keys On Power Up the display will show either good or display an Error e g 1Er5 Which refers in this example to Load Cell No 1 with error No 5 Sequence of Operations Programmer Keys 9 a b gt y Table 3 1 Used to scroll through and change the set up data by displaying mnemonics for each configurable parameter followed by the appropriate data and stores data into non volatile memory Selects the display digit required Selection value is indicated by a flashing digit Increments each selected display digit 0 9 or 9 to 9 for the most significant digit if sign allowed Resets the display to either the good or an error display saving the current value into the non volatile memory If during the programming sequence selection is not completed the display will revert to the status message after 2 minutes Password Protection A 4 digit password number must be entered The number is accessed when PASS is displayed At this point it is necessary to enter the factory set number 1111 4 Mantracourt Electronics Limited LC1 User Manual Configurable Parameters Table 3 2 Code Range Function PAIS IS 1111 Security password a 2 1to4 Number of load cells Lt o d 50 00 Load cell operating range Minimum see 1 Hj a 50 00 Load Cell operat
9. to prevent breakage in transit Mantracourt warranty does not apply to defects resulting from action of the buyer such as mishandling improper interfacing operation outside of design limits improper repair or unauthorised modification No other warranties are expressed or implied Mantracourt specifically disclaims any implied warranties of merchantability or fitness for a specific purpose The remedies outlined above are the buyer s only remedies Mantracourt will not be liable for direct indirect special incidental or consequential damages whether based on the contract tort or other legal theory Any corrective maintenance required after the warranty period should be performed by Mantracourt approved personnel only In the interests of continued product development Mantracourt Electronics Limited reserves the right to alter product specifications without prior notice OM ISO 9001 REGISTERED FIRM N SS Z Designed manufactured and supported in the UK In the interests of continued product development Mantracourt Electronics Limited reserves the right to alter product specifications without prior notice Code No 517 164 Issue 1 6 11 04 14 8 Mantracourt Electronics Limited LC1 User Manual
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