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User’s Manual

Model 7600
Family

Postal Weight Classifiers

Model 7620

Model 7680

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Summary of Contents for 7620 Family

Page 1: ...User s Manual Model 7600 Family Postal Weight Classifiers Model 7620 Model 7680...

Page 2: ...electrical shock Do not remove cover No user serviceable parts inside Refer servicing to qualified service personnel Weigh Tronix reserves the right to change specifications at any time CAUTION 03 09...

Page 3: ...p 9 Operation 10 7600 Menu Structure 14 7600 Menu Structure Glossary 15 Diagnostics Mode 18 Configuration Mode 21 Calibration Mode 23 Re Calibration Mode 26 Gravity Mode 28 Review Scale Settings 30 Co...

Page 4: ...0 lb x 0 02 lb 0 5 kg x 0 001 kg 5 30 kg x 0 005 kg n1 5000 n2 6000 7620 50 100 lb 50 kg 100L Mode low res 0 10 lb x 0 1 oz 10 100 lb x 0 5 oz 0 10 lb x 0 01 lb 10 100 lb x 0 05 lb 0 5 kg x 005 kg 5 5...

Page 5: ...gured as a weight classifier Model 7620 is approved as legal for trade United States NTEP COC 95 071 Canada Ministry of Industry AM 5074 Europe EEC OIML UK 2476 For use as a Class III device from 5 to...

Page 6: ...stop Fixed corner stops Model 7680 Adjustable center stop Adjustable corner stops 400 static loading 200 dynamic loading Internally mounted 1 2 high seven digit LCD Key panel with ZERO and UNITS funct...

Page 7: ...o value for reference for over capacity determination Access to the calibration switch can be secured with a lead wire or pressure sensitive security seal The remote and primary indicators have no met...

Page 8: ...Model 7600 Family PWC User s Manual 8...

Page 9: ...ny adjacent surfaces 2 To install the scale surface flush with a countertop use these dimensions to guide construction Platform Minimum Cutout Dimensions Dimensions 7620 14 W 14 75 W 12 5 D 13 25 D 4...

Page 10: ...st of Read Only Memory ROM If everything is OK the display will show zero weight and the scale is ready for use 1 With the scale powered on make sure the scale platter is empty and the display is at z...

Page 11: ...wer up test sequence This key also functions as YES or ACCEPT in the Menu mode and as the DECREASE key in the Gravity mode Remote Display All NCI 7600 bench scales can have an optional remote display...

Page 12: ...u can access the Menu mode by setting Switch 1 shown in Figure 1 to the OPEN or Menu mode position Access the Gravity setting mode by setting Switch 2 shown in Figure 1 to the OPEN or Gravity mode pos...

Page 13: ...Mode To calibrate the scale 4 Re CAL Mode To change specific calibra tion parameters without having to re calibrate the scale With Switch 2 in the Gravity mode or OPEN position you may increase the L...

Page 14: ...measure 2 Will flash can t if originally calibrated for a non switching kg capacity resolution 3 Will flash can t if originally calibrated for a non switching lb capacity resolution 4 To change the L...

Page 15: ...Calibrates your scale for 70 pound capacity 100L Calibrates your scale for 100 pound capacity low resolution 100H Calibrates your scale for 100 pound capacity high resolution 150 Calibrates your scale...

Page 16: ...unit on option enabled pressing the UNITS key switches between pounds ounces and decimal pounds 1000 g With unit off option enabled the scale displays weight in kilograms when calibrated for Kg lb oun...

Page 17: ...ns only INT ON Choosing this function activates the multi interval function of the scale Display returns to higher resolution mode immediately at multi ranging weight value For TYPE APPROVED applicati...

Page 18: ...t I O Data is output by the scale and through the use of a loopback connector the data is immediately read back into the receive channel and verified against what was sent PASS or FAIL is displayed Re...

Page 19: ...TS key to perform the RAM test PASS or FAIL is displayed briefly If the test fails the unit may have a RAM memory failure Try the test a second time and if FAIL is displayed contact your local Weigh T...

Page 20: ...orm this test The display shows the weight on the scale at a resolution of 1 000 000 counts 12 Press the UNITS key to stop the test 13 Press the ZERO key DIV N is displayed This stands for the high re...

Page 21: ...LTER Choose from FLTR ON OR FLTR OFF Default is FLTR ON In a stable vibration free location the FLTR OFF setting could be used if quicker display response is desired Baud BAUD Choose one of the follow...

Page 22: ...00 or 19200 baud 7 Press the UNITS key Baud rate selection is stored 8 Press the ZERO key PARITY is displayed 9 Press the UNITS key The current setting is displayed Use the ZERO key to toggle between...

Page 23: ...weighing mode The calibration CAL mode menu lets you calibrate your scale The items in the calibration menu are as follows Pounds Kilograms LB or 1000g Selects the unit of measure of your calibra tio...

Page 24: ...y to start calibration LBS or 1000g kg is displayed 3 Press the ZERO key to toggle between the choices of units of measure lb or kg When the choice you want is displayed press the UNITS key to accept...

Page 25: ...UNITS key to accept The scale then prompts LOAD O 9 Clear all weight from the scale platter and press the UNITS key After a brief wait LOAD 100 span weight is displayed Alternate calibration points ca...

Page 26: ...e move Switch 1 to the Menu mode or Open posi tion DIAG is displayed 2 Press the ZERO key until RE CAL is displayed 3 Press the UNITS key ROUND is displayed To change the weight rounding method press...

Page 27: ...it of measure press the UNITS key the current choice is displayed 11 Press the ZERO key to toggle between UNIT ON and UNIT OFF 12 Press the UNITS key to select the UNITS key status and to display unit...

Page 28: ...meters per second per second i e m s2 It is not necessary to calibrate the scale therefore no calibration weights are needed to make this adjustment The scale maintains two gravity setting values The...

Page 29: ...will change in steps of 0001 When the correct value is displayed simply return Switch 2 to the CLOSED position The scale will now use this new relationship between calibration and local gravity for it...

Page 30: ...to view current scale setup When finished viewing the settings press the ZERO key until DONE is displayed Then press the UNITS key to return to normal weighing mode of operation Review Scale Settings...

Page 31: ...RXD IN 3 RXD IN 3 TXD OUT 4 JMP 1 4 DTR OUT 5 SGND 5 GND 6 JMP 1 6 DSR IN 7 JMP 2 7 RTS OUT 8 JMP 2 8 CTS IN 9 NC 9 RI IN The scale uses a DE 9 connector This standard is used by all NCI bench scale p...

Page 32: ...status Z CR Scale Response LF hhh CR ETX Scale is zeroed returns status H CR Scale Response LF xxxx xxxuu CR LF hhh CR ETX Returns decimal lb or kg weight in 10X format with units or and scale status...

Page 33: ...epartment for protocol Any system errors detected by the scale will be displayed as the letter E followed by a two digit error code Press the UNITS key to continue operation If a calibration error occ...

Page 34: ...rovider No Power Display is Blank 1 Check that the primary side of the cord is plugged into the AC outlet and the second ary side is properly connected to the power jack on the back of the scale 2 Rep...

Page 35: ...lace the display board 4 Replace PROM 5 Replace the QDT load cell Display shows under _ _ _ _ dashes Indicates that the scale is below zero or under capacity 1 Verify that weigh platter is on the scal...

Page 36: ...host device 2 Check communication setting and baud rate on both the scale and host device 3 Perform I O loopback test 4 Replace the cable 5 Replace the I O board 6 Replace the QDT load cell The ZERO...

Page 37: ...1148 15833 RS 232 Cable 1140 13842 Load Cell 70 lb 7153 15694 23 Load Cell 100 lb 7153 15694 50 Load Cell 150 lb 7620 7153 15694 80 7620 Feet 7075 15475 02 Shroud ABS Plastic 7620 1076 15256 Shroud S...

Page 38: ...TTINGS CONTROL PANEL SYSTEM DEVICE MAN AGER PORTS Enumeration is now complete and the W T Scale display should countdown and show weight Notes If the W T USB Scale has already been installed the compu...

Page 39: ...Model 7600 Family PWC User s Manual 39...

Page 40: ...1000 Armstrong Drive Fairmont MN 56031 Telephone 507 238 4461 Facsimile 507 238 4195 E Mail service wt nci com www wt nci com...

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