Zapi ACE3 - Page 101

AFFZP0BB – ACE3 – User Manual Page – 101/139
Troubleshooting
- Replace the controller.
43) VDC OFF SHORTED
Cause
The logic board measures a key voltage value that is constantly out of range,
above the maximum allowed value.
Troubleshooting
- Check that the battery has the same nominal voltage of the inverter.
- Check the battery voltage, if it is out of range replace the battery.
- In case the problem is not solved, replace the logic board.
44) VKEY OFF SHORTED
Cause
The logic board measures a key voltage that is constantly out of range, below
the minimum allowed value.
Troubleshooting
- Check that the battery has the same nominal voltage of the inverter.
- Check the battery voltage, if it is out of range replace the battery.
- In case the problem is not solved, replace the logic board.
45) POWERMOS SHORTED
Cause
The DC-link voltage drops to zero when a high-side MOSFET is turned on.
Troubleshooting
- Check that motor phases are correctly connected.
- Check that there is no dispersion to ground for every motor phases.
- In case the problem is not solved, replace the controller.
46) BUMPER STOP
Cause
The two digital inputs dedicated to the bumper functionality are high at the same
time.
Troubleshooting
- Turn off one or both inputs dedicated to the bumper functionality;
- If the alarm occurs even if the inputs are in the rest position, check if the
microswitches are stuck.
- In case the problem is not solved, replace the logic board.
47) WRONG SET KEY
Cause
The measured key voltage is not the right one for the inverter.