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AFMNA0AA – EPS-BLI HYG – User Manual
Figure 10.2-2
6) POWER FAILURE #1
Alarm 0xFF49 = 73 Group #2 [M,S]:
- Cause:
This alarm is raised by the MuC when the current in phase U of the
motor is very low 100 ms long even if it is commanded higher than
14% Imax.
- - Remedy: MuC: if it is repetitive, check if the battery is connected to the
controller. Otherwise the problem can be a failure in the power
three phase bridge or in terminal U motor connection.
SuC: an overload is occurred in the steering controller. One
possibility is too much friction in the transmission.
7) POWER FAILURE #2
Alarm 0xFF48 = 72 Group #2 [M,S]:
- Cause:
This alarm is raised by the MuC when the current in phase V of the
motor very low 100 ms long even if it is commanded higher than
14% Imax.
- Remedy:
MuC: If it is repetitive, check if the battery is connected to the
controller. Otherwise the problem can be a failure in the power
three phase bridge or in the motor.
SuC: if the contactor on the DC-rail to the E-steering controller is
welded in its closed position, replace it.
8) POWER FAILURE #3
Alarm 0xFF47 = 71 Group #2 [M,S]:
- Cause:
This alarm is raised by the MuC when the current in phase V of the
motor very low 100 ms long even if it is commanded higher than
14% Imax.
- Remedy:
If it is repetitive, check if the battery is connected to the controller.
Otherwise, the problem can be a failure in the power three phase
bridge or in the motor.
9) VMN NOT OK
Alarm 0xFF20 = 32 Group #0 [M,S]:
- Cause:
This alarm occurs at key-on in case at least one amplifiers on
phase-to-phase voltages Vv-Vu and Vu-Vw is not in a narrow
window of ± 300 mV around 2.4 V 10 ms long (sampling time 2 ms
for 5 consecutive samples). Admitted output at rest is 2.1 V
through 2.7 V.
