CBE 520, Safety, Installation, Operation, Maintenance

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Table 1: Connector Wiring
WIRING DESIGNATION WIRE COLOR
(+) Excitation Red Red
(-) Excitation Black
(+) Signal Green
(-) Signal White
(+) Sense Blue
(-) Sense Brown
Ground or Shield Clear
CALIBRATION INSTRUCTIONS
1. Calibrate the scale to controller indicator per instructions supplied (See Chapter 4 for Calibration
Instructions).
2. After calibration has been completed, take a known weight (ideally 25% of 10,000 # capacity)
and check each corner. Place weight between center of scale and each corner one at a time as
shown in
Figure 1: Load Cell Configurations. Use the same calibrated weight in each corner.
3. If the indicator weight reading deviates from the known weight, use the junction box trim pot for
that corner and adjust as needed. A qualified service technician is highly recommended to
perform this procedure. Call CBE to schedule a service technician to assist you with installation
of your system.
4. To adjust the corner weight readings, use the trim pot designated for that corner which is
numbered the same as the corner you need to adjust. Turning the pot clockwise increases the
weight reading. Refer to
Figure 2: Junction Box connections for the correct location.
5. After each corner has been checked and calibrated, make a final check of your calibration in all
corners and center of the scale.
6. The scale is now calibrated and ready for use.
LOAD CELL REPLACEMENT
Should a load cell become damaged due to an overload condition, replacement load cells can be
ordered from CBE. The part number for the load cell can be found on the Recommended Spare
Parts List in this manual.
1. Unbolt the defective load cell, and then remove leveling load foot from the load cell.
2. Disconnect load cell cable from junction box and attach a chase wire to the load cell cable.