Zapi ACE0 2mC - Page 124

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RPM HIGH (MDI/LED code = 0)
Cause
:
This alarm occurs in Gen. Set versions when the speed exceeds the
threshold speed.
SEAT MISMATCH (MDI/LED code = 15)
Cause
This alarm can appear only in a Traction + Pump configuration or in a multi-
motor one.
There is an input mismatch between the traction controller and the pump
controller relatively to the TILLER/SEAT input (A1): the two values recorded
by the two controllers are different.
Troubleshooting
- Check if there are wrong connections in the external wiring.
- Using the TESTER function, verify that the seat inputs are in accordance
with the actual state of the external switch.
- In case no failures/problems have been found, the problem is in the
controller, which has to be replaced.
SENS MOT TEMP KO (MDI/LED code = 68)
Cause:
The output of the motor thermal sensor is out of range.
Troubleshooting:
- Check if the resistance of the sensor is what expected measuring its
resistance.
- Check the wiring.
- If the problem is not solved, replace the logic board.
SIN/COS D.ERR XX (MDI/LED code = 3)
Cause:
This alarm occurs only when the controller is configured as PMSM and the
feedback sensor selected is sin/cos. The signal coming from sin/cos sensor
has a wrong direction. The hexadecimal value “XX” facilitates Zapi
technicians debugging the problem.
Troubleshooting:
- Check the wirings.
- If the motor direction is correct, swap the sin and cos signals.
- If the motor direction is not correct, swap two of the motor cables.
- If the problem is not solved, contact a Zapi technician.
SPEED FB. ERROR (MDI/LED code = 81)
Cause
This alarm occurs if the absolute position sensor is used also for speed
estimation. If signaled, it means that the controller measured that the engine
was moving too quick.
Troubleshooting
- Check that the sensor used is compatible with the software release.
- Check the sensor mechanical installation and if it works properly.
- Also the electromagnetic noise on the sensor can be a cause for the
alarm.