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NCI 7620 Family User Manual

Postal weight classifiers
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Model 7600
Family
Postal Weight Classifiers
Model 7620
Model 7680
User's Manual

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Summary of Contents for NCI 7620 Family

  • Page 1 Model 7600 Family Postal Weight Classifiers Model 7620 Model 7680 User’s Manual...
  • Page 2 CAUTION Risk of 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. 03/09/05 7600_U.P65 PN 7424-15384G e2 Printed in USA Model 7600 Family PWC User’s Manual...

  • Page 3: Table Of Contents

    Table of Contents Description ............4 Specifications ............4 Initial Setup ............9 Operation ............10 7600 Menu Structure ......... 14 7600 Menu Structure - Glossary ....... 15 Diagnostics Mode ..........18 Configuration Mode ........... 21 Calibration Mode ..........23 Re-Calibration Mode .........

  • Page 4: Description

    0-5 kg x 0.001 kg 5-30 kg x 0.005 kg -5000 -6000 Default for 100 lb 7620-50 100 lb/50 kg (100L Mode low res) scale 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...
  • Page 5 Agency Model 7620 is approved as legal for trade: Certificates of United States - NTEP COC #95-071 Conformance Canada - Ministry of Industry #AM 5074 Europe - EEC (OIML) #UK 2476 For use as a Class III device from +5º...
  • Page 6 42º F - 104º F Operating Temperature +5º C to + 40º C 10% to 95% RH (non-condensing) Model 7620: Construction Die cast aluminum base and load bridge. Plastic ABS or stainless steel weigh platter. Aluminum quartz digital load cell...
  • Page 7 Under Capacity Limits Under capacity indication will be given with dashes appearing on the bottom line of the display whenever the display is more than 10 division below the initial zero value. Over Capacity Limits Over capacity indication will be given with dashes appearing in the upper line of the display when- ever the weighed item exceeds 9 divisions over the rated capacity of the unit.
  • Page 8 Model 7600 Family PWC User’s Manual...

  • Page 9: Initial Setup

    18" D 18.75" D 4.6" Min Ht. 3. Loosen the plastic collars (7620) or jam nut (7680) on the leveling feet. Level the scale by using the level bubble under the scale platter as a guide. Be sure all four feet are in firm contact with the counter, then tighten all collars (nuts).

  • Page 10: Operation

    4. Make sure all power cords, remote display cables, etc. are not touching the live weighing surface. 5. Plug the unit into an appropriate (properly grounded) voltage outlet. Operation Power Up When the unit is first powered on it will perform a Test Sequence test sequence.
  • Page 11 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 (shown above with no keyboard function). If a remote display with keyboard is used, then Switch 3 (shown in Figure 1) deter- mines which display keyboard is functional.
  • Page 12 Accessing the Gravity Access the Gravity setting mode by setting Setting Mode Switch 2 shown in Figure 1 to the OPEN or Gravity mode position. Figure 1 7620 Switch Location Bottom View of Model 7680 Model 7600 Family PWC User’s Manual...
  • Page 13 There are four modes available to you with Menu Mode Switch 1 in the Menu mode or OPEN position. They are as follows: 1. DIAG Mode – To test areas of the scale’s function 2. CONFIG Mode – To configure your scale for your application 3.

  • Page 14: 7600 Menu Structure

    Figure 2 7600 Menu Structure Notes: (1) The ‘re-calibration values displayed will be the same as those of the original ‘calibration units of 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.

  • Page 15: 7600 Menu Structure - Glossary

    7600 Menu Structure - Glossary Table 1 Calibrates your scale for 30 kilogram capacity. Calibrates your scale for 50 kilogram capacity, low resolution. Calibrates your scale for 50 kilogram capacity, high resolution. Calibrates your scale for 75 kilogram capacity. Table 2 Calibrates your scale for 70 pound capacity.
  • Page 16 Table 4 lb kg With "unit on" option enabled, pressing the UNITS key switches between decimal pounds and kilograms. lb-oz kg With "unit on" option enabled, pressing the UNITS key switches between pounds- ounces and kilograms. lb-oz lb With "unit on" option enabled, pressing the UNITS key switches between pounds- ounces and decimal pounds.
  • Page 17 For TYPE APPROVED applications. Alternate Span The NCI 7600 bench scales allow calibration Calibration Points using less than full capacity weights. Below are the alternative weights that can be used to calibrate your scale for its designated capacity.

  • Page 18: Diagnostics Mode

    Diagnostics Mode The Diagnostic (Diag) mode menu lets you test Diagnostics (DIAG ) specific areas of the scale’s function. Mode These areas are: Display (DISPLAY) – Shows the version and revision of the software, followed by a display segment test. RAM (RA) –...
  • Page 19 Follow these steps to access the tests in the Step-by-Step Instruc- DIAG menu (Refer to Figure 2). tions for DIAG Mode 1. From normal weighing mode, move Switch 1 to the Menu mode or OPEN position. DIAG is displayed. 2. Press the UNITS key… DISPLAY is displayed.
  • Page 20 8. Press the ZERO key… I-O is displayed. This stands for the Input/Output test. 9. With a loopback connector in place, press the UNITS key to perform the I/O test… PASS or FAIL is displayed. If the test fails, the unit may have a serial interface failure.

  • Page 21: Configuration Mode

    Parity (PARITY) – Choose from: NONE, EVEN, or ODD. Default is EVEN. Protocol (Prot) – Choose communication protocol: NCI STD for standard NCI protocol, NCI SMA for Scale Manufacturers’ Association Standard for Scale Serial Communications, AS350d for Detecto emulation, or PS6L for Mettler emulation.
  • Page 22 Step-by-Step Follow these steps to access and configure the Instructions for items in the CONFIG menu. Refer to Figure 2. CONFIG Mode 1. From the DIAG display press the ZERO key, or from normal weighing mode, move Switch 1 to Menu mode or OPEN position, then press the ZERO key…...

  • Page 23: Calibration Mode

    PROT is displayed. 12. Press the UNITS key… The current setting is displayed. Use the ZERO key to toggle between the four choices: NCI STD, NCI SMA, AS350D, PS6L. 13. Press the UNITS key… Protocol selection is stored. 14. When finished configuring your scale, press the ZERO key until the display shows DONE, then press the UNITS key.
  • Page 24 Unit On or Unit Off When configured for UNIT ON, the scale will allow you to switch between the selected units of measure using the UNITS key. Capacity (100, etc.) Select the capacity of your scale. Step -by-Step Follow these steps to calibrate your scale. Refer Instructions for to Figure 2.
  • Page 25 5. Press the ZERO key to toggle between the choices UNIT ON or UNIT OFF. Once your choice is displayed, press the UNITS key… See above for the definitions of calibrat- ing the scale using UNIT ON or UNIT OFF. 6.

  • Page 26: Re-Calibration Mode

    Re-Calibration Re-Calibration The re-calibration RE-CAL mode menu lets you (RE-CAL) Mode change the scale resolution, rounding method, units and range or interval method without using any calibration weights. For a scale originally calibrated in the lb mode, you may also change rounding methods (i.e. scale or classifier).
  • Page 27 7. Press the UNITS key. The current capacity/ resolution setting is displayed. 8. Press the ZERO key until desired capacity/ resolution is displayed. 9. Press the UNITS key to select a new capacity/resolution. 10. Press the ZERO key… UNITS is displayed. To change the UNITS key status or the current unit of measure, press the UNITS key, the current choice is displayed.

  • Page 28: Gravity Mode

    16. When the choice you want is displayed, press the UNITS key. 17. Press the ZERO key.. . DONE is displayed. 18. Close Switch 1 to return to normal weighing mode. Gravity Mode The Gravity mode feature provides a means of The CAL-GR and adjusting the scale’s internal calibration factors to LOC-GR values may...
  • Page 29 To enter the Gravity mode, set Switch 2 to the OPEN position. The display will indicate the current “local” gravity value. Press the ZERO key to increment the value or the UNITS key to decrement the value. The gravity value will change in steps of .0001.

  • Page 30: Review Scale Settings

    Review Scale Settings Pushing the UNITS key during the segment test Press the ZERO key to on power-up, will allow you to view current scale move to the next item setup. in the menu. Press the UNITS key to select the display item to view.

  • Page 31: Communications

    * Jmp1 and Jmp2 pins JMP 2 are connected JMP 2 internally on the scale PCB connector. The scale uses a DE-9 connector. This standard is used by all NCI bench scale products. NCI STD Symbol key: Communications <ETX> End of Text character (03 Protocol hexadecimal).
  • Page 32 Standard Commands W<CR> Weight Scale Response <LF>xxxx.xxuu<CR> <LF>hhh <CR><ETX> Returns decimal lb or kg weight, units and scale status <LF>xx lb<sp>xx.x oz<CR> <LF> hhh <CR> <ETX> Returns lb-oz weight, units and scale status S<CR> Status Scale Response <LF>hhh <CR><ETX> Returns scale status Z<CR>...

  • Page 33: Error Codes

    All other commands Scale Response <LF>?<CR><ETX> Unrecognized command NCI SMA, AS350D or Contact your Weigh-Tronix service provider or PS6L Communications the Weigh-Tronix customer service department Protocol for protocol. Error Codes Any system errors detected by the scale will be displayed as the letter E followed by a two-digit error code.

  • Page 34: Troubleshooting

    Troubleshooting Perform the following steps in the order pre- sented until the described problem is corrected. If the problem cannot be corrected, contact an authorized Weigh-Tronix service provider. 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.
  • Page 35 Scale will not return to zero, or incorrect weight is displayed 1. Press the ZERO key. 2. Check for interference of weighing platform. 3. Power off, remove all items from the platter, and then power on the scale. 4. Recalibrate the scale. 5.
  • Page 36 _ _ _ _ Display shows upper “ “ dashes (Indicates the scale is over capacity.) 1. Remove all items from the scale. 2. Press the ZERO key. 3. Power off, and then power on the scale. 4. Recalibrate the scale. 5.

  • Page 37: Spare Parts Listing

    Power Supply - 230 VAC 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 SS 7620 1076-15767 Shroud Ball-top (BTS) 7620...

  • Page 38: Installing Usb Software

    7600 scale. • Plug USB cable into computer USB port. • Plug other end of USB cable into NCI USB Scale. • If this is the first time for installation, the computer will recognize the USB device and prompt for a driver for the ‘Weigh-Tronix USB Serial Adapter’.
  • Page 39 Model 7600 Family PWC User’s Manual...
  • 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...

This manual is also suitable for:

7680 family7600 family

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