Zapi ACE0 2mC - Page 123

AF6ZP0CA – COMBIAC0 & ACE0 2uC – User Manual Page – 123/155
- The motor connected to -P must be completely still before this alarm
occurs. The software waits 30 seconds before showing this alarm. During
this time it shows the WAIT MOTOR STILL warning.
- Motor internal connections
- Motor power cables connections
- Motor leakage to truck frame
- If the motor connections are ok, the problem is inside the controller it is
necessary to replace the logic board.
PUMP I NO ZERO (MDI/LED code = 56)
Cause:
In standby condition (pump motor not driven), the feedback coming from the
current sensor in the pump chopper gives a value out of a permitted range,
because the pump current is not zero.
Troubleshooting:
This type of fault is not related to external components; replace the
controller.
PUMP I=0 EVER (MDI/LED code = 52)
Cause:
While the pump motor is running, the current feedback is constantly stuck to
zero.
Troubleshooting:
 Check the motor connection, that there is continuity. If the motor
connection is opened, the current cannot flow, so the test fails and the
error code is displayed;
 If everything is ok for what it concerns the motor, the problem could be in
the current sensor or in the related circuit.
PUMP INC START (MDI/LED code = 79)
Cause
:
Man-presence switch is not enabled at pump request.
Troubleshooting
:
- Check wirings.
- Check microswitches for failures.
- Through the TESTER function, check the states of the inputs are
coherent with microswitches states.
- If the problem is not solved, replace the logic board.
PWM ACQ. ERROR (MDI/LED code = 6)
Cause
This alarm occurs only when the controller is configured to drive a PMSM
and the feedback sensor selected in the HARDWARE SETTINGS list is
ENCODER ABI + PWM.
The controller does not detect correct information on PWM input at start-up.
Troubleshooting
- Re-cycle the key.
- Check the sensor in order to verify that it works properly.
- Check the wiring.
- If the problem occurs permanently it is necessary to substitute logic
board.