0330-1302-0M Rev A
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Digital Truck Scale Troubleshooting Guide
6
LOAD CELL X HAS NO ADDRESS
SOLUTION:
A. Go to the Scale Setup screen and enter the load cell ID in the correct scale location.
COMMUNICATION ERROR BETWEEN LOADCELLS X AND Y
SOLUTION:
A. Use the NEST to test the suspect load cell cable for defects.
B. If the load cell cable tests good, use the NEST to test the two connecting load cells.
C. If a NEST is not available, replace the suspect load cell cable with a new load cell cable
and confirm operation.
D. If after replacing the load cell cable, the error still exists, replace the two connecting load
cells (one at a time) to confirm operation.
SCALE WILL NOT RETURN TO ZERO
SOLUTION:
A. After ensuring the scale deck is clear of any buildup or debris, enter DIAGNOSTICS.
B. The first screen displays the actual deadload that is on each load cell. If these values
look correct, push the ZERO key to get a zero reading for each load cell.
C. Make multiple passes with a loaded truck and observe which (if any) load cells do not
return to zero. Small errors are normal as the deck may not return to exactly its previous
position.
D. If a load cell is not returning to zero, jack up the bridge at that load cell location and
check for broken pivot plates, balls or the hardened cup.
E. Check for clearance from the corner stand to the main beam flanges. If a stand is not
centered, and rubbing the bridge, it will cause zero errors.
SCALE IS UNSTABLE
SOLUTION:
A. Go to the second diagnostics screen MINIMUN/MAXIMUM WEIGHTS and press ZERO.
B. Observe the change in output of the load cells for 10-15 minutes to identify a drifting
load cell.
