Final Adjustments
3-30 Manual # 42-02-2M01 A1
Adjust the Analog Weigher
1. If an analog load weigher is connected to the AN2 + and AN2- terminals on the drive
parameters, LA15 and LA16 are used to adjust the pretorque gain and balance respec-
tively. These parameters are located on the drive's Home > Prog > Analog I/O menu.
2. The raw and processed pretorque signal can be observed on the drive's Home > Diag >
Screen #5 display
Troubleshooting
1. Check for error codes on the display.
= Bad load cell connection or damaged load cell. Verify load cells are connected
to the control unit per the wiring diagram. Inspect cables for cuts or broken wires.
= Negative load cell flow. Verify load cell connections to the control unit are per
the wiring diagram.
= Positive load cell flow. Load cells are too small for the application and must be
replaced with proper units.
= Polarity error. Verify load cell connections to the control unit are per the wir-
ing diagram. Reprogram the control.
= MB-D display short. Locate the short. Disconnect MB-D display, turn off the
control, then reconnect the MB-D display.
= Loss of data in memory. Reprogram the control.
2. Verify that proper voltage is being supplied to the control unit.
3. Check all connections to the control unit.
4. Check the fuse: Disconnect power to the control unit. Open the unit by removing the five
(5) screws that hold the cover. Remove fuse from black fuse holder next to controller
transformer and replace with new fuse if necessary.
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