AND SB-30 Digital Bench Scale Instruction Manual

AND SB-30 Digital Bench Scale

About AND Weighing

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Introduction

• The SB-30/70/150 Digital Bench Scales are compact bench scales with a display and five functional keyboards. It is available in 30 lb (15 kg), 70 lb (30 kg), and 150 lb (70 kg) capacities. It comes standard with a bright LED screen for easy readout, a removable stainless steel platform, and an RS-232C serial communication port.
• These scales can be configured to display their divisions in two separate modes – non-NTEP mode and NTEP mode. The scale is shipped from the factory configured in NTEP mode. The NTEP mode is supplied for scales that need to comply with Handbook 44 requirements. To re-configure the scale, please refer to the “Setup Menu Mode” section of the manual.
• SB-30/70/150 uses full duplex RS-232C serial format for communication with personal computers or remote displays. Units can transmit data on demand or continuously in several popular data protocols.
• Each scale’s serial communication parameters are altered through the User menu The “User Menu Mode” section of the manual explains how to use the five front panel keys to maneuver and save settings in this menu.

Installation and Wiring

The scale’s back panel comes equipped with a female DSUB-9 connector for the RS-232 serial port, a jack for DC power input, a calibration switch, a remote display connector (SB-30 & SB-70 only), and an ON/OFF rocker switch.

• To install the scale, simply plug the enclosed AC Wall Adapter into the scale’s DC power jack first, then into an AC outlet (115 VAC only).
• For SB-30 and SB-70 scales, plug in the remote display/keyboard unit.
• Finally, turn the rocker switch to the ON (“1”) position. The scale is now ready for use.

The female 9-pin RS-232 connector is used to interface to a PC. Shown at right are the pin assignments for the connector.

Shown at right is the suggested cable diagram for direct connection to a PC. Or, you can order the optional pre-wired NMC-1 Null Modem Cable

Display Overview

Keyboard Functions

User Menu Mode

SB-30/70/150 includes a User menu that contains the scale’s serial communication parameters. It consists of 5 separate menu selections, each also with its own sub-menu of choices. To change a listed parameter, you must first enter the User Menu mode. Once there, four of the front panel keys become directional navigators to move around in the menus, and one key is used to save or SET the selections.

To place the unit in User menu mode:

1. Turn the power off to the unit.
2. While holding down the lb/kg key, turn the power back on.
3. When the display shows “A1”, the unit is in User Menu mode, and you can release the lb/kg key. Shown at right are the directional and SET key assignments

USER MENU CHART

To place the unit back into the Normal Operating mode:

1. Turn off the scale. Turn the scale back on without pressing any keys.
2. The display will go through a digit check, and then settle into Normal Operating mode. All front panel keys will now return to their normal mode of operation.

USER MENU DESCRIPTIONS

Setup Menu Mode

SB-30/70/150 scale includes a Setup menu which determines the scale’s display mode, allows scale calibration, and also contains the scale’s adjustable functional parameters. It consists of 5 separate menu selections, each also with its own sub-menu of choices.

To change a listed parameter, you must first enter the Setup Menu mode. Once there, four of the front panel keys become directional navigators to move around in the menus, and one key is used to save or SET the selections.

To place the unit in Setup menu mode:

1. Turn the power off to the unit.
2. Locate the calibration switch on the scale’s back panel and toggle to the opposite position.
3. While holding down both the ZERO and PRINT keys, turn the power back on.
4. When the display shows “F1”, the unit is in Setup Menu mode, and you can release the two keys. Shown at right are the directional and SET key assignments

SETUP MENU CHART

To place the unit back into the Normal Operating mode:

1. With the scale on or off, toggle the Calibration Switch back to its original position. Turn the scale back on without pressing any keys.
2. The display will go through a digit check, and then settle into Normal Operating mode. All front panel keys will now return to their normal mode of operation.
3. There is an F13 sub-menu present that is for FACTORY USE ONLY!

SETUP MENU DESCRIPTIONS

Calibration

The scale can be calibrated by following the procedure shown below. The minimum test weight and the recommended test weight depends on the scale’s capacity.

For the SB-30, the minimum test weight is 0.3 lb (0.15 kg), and the recommended test weight is 20 lb (10 kg). For the SB-70, the minimum test weight is 0.7 lb (0.35 kg), and the recommended test weight is 47 lb (23 kg). For the SB-150, the minimum test weight is 1.5 lb (0.7 kg), and the recommended test weight is 100 lb (50 kg).

To calibrate the scale:

1. If you are already in Setup Menu Mode, scroll to “F 12” and press the ZERO key. Otherwise, turn the scale off and set the Calibration Switch on the back panel to the opposite position. Turn the unit back on.
   The message “C 0” appears on the display briefly, followed by a value that remains on the screen. Allow a 20-minute warm-up period for the load cell and other electronics to become thermally stable.
2. Press ZERO to zero the value, then press the NET/GROSS key to save the zero point value.
3. The display will momentarily prompt “C 1” for the span calibration, followed by “0.00” with one digit flashing. Place the test weight on the platform.
4. Use the four directional keys to adjust the displayed value to the actual test weight value in pounds. Increase the flashing digit by pressing the lb/kg key. Decrease the flashing digit by pressing the ZERO key. The position of the flashing digit may be changed by pressing the PRINT key or the TARE key.
5. After setting the exact value, press the NET/GROSS key to save the value.
6. If the calibration is successful, the display will show “ECAL” momentarily, then freeze. Exit the Calibration mode and enter the Normal Operating Mode by positioning the Calibration Switch back to its original position.
7. If the calibration is not successful, one of the error messages below will appear. Take the indicated action to correct the problem, then perform a new calibration.
   “Err0” – The calibration test weight or the adjusted keyed-in weight is larger than the full scale. Change the calibration test weight or check the keyed-in weight.
   “Err1” – The calibration test weight or the adjusted keyed-in weight is smaller than 1% of the full scale. Change the calibration test weight or check the keyed-in weight.
   “Err2” – Check keyed-in weight with the actual weight placed on the platform.

To place the unit back into the Normal Operating mode:

1. Toggle the Calibration Switch back to its original position.
2. The display will go through a digit check, and then settle into Normal Operating mode. All front panel keys will now return to their normal mode of operation.

Specifications

• CONSTRUCTION:
  Base: Steel and ABS
  Platform: Stainless Steel
  Feet: Non-skid Hard Rubber
• DISPLAY: 6 Digit, 0.6″, 7-Segment Green LED
• OVER CAPACITY ANNUNCIATION: 102% of Full-Scale Capacity
• OPERATING TEMPERATURE RANGE: 32°F to 104°F (0°C to 40°C)
• PLATTER SIZE:
  SB-30/70: 10” x 13”
  SB-150: 13” x 13”
• POWER SOURCE: AC Adapter, 12VDC, 500mA
• WEIGHT: Net Weight: 24.3 lb (11 kg) Shipping Weight: 27.8 lb (12.6 kg)
• PHYSICAL DIMENSIONS

Troubleshooting the Serial Port

The scale’s serial port operation can be verified by following the procedure below. This procedure makes use of HyperTerminal – a serial port communication program bundled with Windows 95 and Windows 98 operating systems. A HyperTerminal configuration file is available on the Transcell website.

A comprehensive summary of the various Serial Data Formats (SDFs) can be found in the SB Series Service Manual.

To test the scale’s serial port for proper operation:

1. Connect the NMC-1 Null Modem Cable or equivalent between the scale and your PC. Make sure to note which communication port (i.e. COM1, COM2) you are using on the PC.
2. On the scale, select the desired setting in the User Menu, including baud rate (A1), Data Bits and Parity (A2), mode (A3), and serial data format (A4). Note that all Transcell scales have a fixed parameter of one (1) stop bit.
3. On your PC, run HyperTerminal. Select the proper settings for the following using the scale’s settings:
   Baud Rate
   Data Bits
   Parity
   Stop Bits = 1
4. Enable the CAPS LOCK key on your PC.
5. This test verifies that the scale is transmitting properly. If the scale is set to Demand mode, pressing the PRINT key on the scale should echo the weight readout on the PC screen. If the Continuous mode has been selected on the scale, the PC screen will overrun with weight information.
   NOTE: The TOLEDO, A&D/NCI/CAS, FAIRBANKS, and TRINER formats do not support a Continuous mode.
6. This test verifies that the scale is received properly. Use the table below to determine the valid commands for your serial data format setting. For example, the ‘P’ command is executed by pressing the capital “P” key on your PC keyboard. Unless otherwise specified, you do not need to press the ENTER key on your PC.
   NOTE1: If the scale is set to Continuous mode, the print commands will be ignored.
   NOTE2: If the scale is in motion, the print commands will be ignored for most SDFs.

Displayed Error Codes

Warranty and Service Information

Seller warrants that each SB-30/70/150 will conform to written specifications, drawings, and other descriptions made by the manufacturer, including any modifications thereof. Seller warrants the goods against faulty workmanship and defective materials. If any goods fail to conform to these warranties, Seller will, as its sole and exclusive liability hereunder, repair or replace such goods if they are returned within the following warranty period: Two (2) years from the date of shipment. This warranty is made upon the express condition that:

1. Buyer notifies Seller of such non-conformity with a detailed explanation of alleged deficiencies.
2. The product should not be returned without prior notice to the Seller.
3. Other than setup functions & calibration, such goods have not been modified, altered, or changed by any person other than the Seller or its duly authorized repair agents.
4. Examination of such goods by Seller discloses that the nonconformity actually exists and was not caused by accident, misuse, neglect, alteration, improper installation improper or unauthorized repair, or improper testing.
5. Seller will have a reasonable time to repair or replace such goods.

THESE WARRANTIES EXCLUDE ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, ORAL OR WRITTEN, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SELLER WILL NOT, IN ANY EVENT, BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. IN ACCEPTING THIS WARRANTY, THE PURCHASER OR BUYER AGREES TO WAIVE ANY AND ALL OTHER CLAIMS FOR THE RIGHT TO WARRANTY FROM A&D WEIGHING. SHOULD THE SELLER BE OTHER THAN A&D WEIGHING, THE BUYER AGREES TO LOOK ONLY TO THE SELLER FOR WARRANTY CLAIMS OR CLAIMS.
No other terms, conditions, understanding, or agreements purporting to modify the terms of this warranty shall have any legal effect unless made in writing and signed by a corporate officer of the Seller.

FAQS About AND SB-30 Digital Bench Scale

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