Three Blinks Alarms - Zapi EPS-AC0 SWs&ENC User Manual

- Remedy:
7) MAIN CONT. OPEN
- Cause:
- Remedy:
8) CAN BUS KO
- Cause:
- Remedy:
9) MOTOR LOCKED
- Cause:
- Remedy:

13.1.3 Three Blinks Alarms

1) D LINE SENSOR KO
- Cause:
- Remedy:
2) Q LINE SENSOR KO
- Cause:
- Remedy:
3) S.P OUT OF RANGE
- Cause:
AEMZP0EA - EPS-AC0 SWs&ENC - User Manual
It is necessary to replace the controller.
CAN Bus Code = 48
This alarm occurs only when the setting CAN BUS is PRESENT.
Then the eps-ac0 waits for a via CAN information that the traction
controller has closed the main contactor. If this information lacks
more than about 1.5 secs, this alarm occurs.
Find, on the traction controller, the reason for keeping the main
contactor open.
CAN Bus Code = 247
This alarm occurs only when the setting CAN BUS is PRESENT.
Then the eps-ac0 must receive the event messages from the
traction controller. If these messages lack more than about 1 sec,
this alarm occurs.
Check the CAN Bus communication system and analyse the
frames from the traction controller to the steer controllers.
CAN Bus Code = 220
This alarm occurs if the current in the steering motor stays higher
than 90% of the maximum current longer than 1 sec.
Search for a mechanical problem locking the motor. To make
easier the fault catching, set DEBUG OUTPUT to level 11 (see
11.4.6.4).
CAN Bus Code = 243
This alarm occurs when the mean voltage on the Direct line of the
stepper motor (connection CNA#9) is not null: the voltage on every
stepper motor line is a sine wave with null mean voltage.
Check the continuity of the stepper motor connections. In particular
the resistance between CNA#9 and the minus battery (with the
stepper motor at rest) is expected being very low (close to 30
ohms).
CAN Bus Code = 242
This alarm occurs when the mean voltage on the Quadrature line
of the stepper motor (connection CNA#8) is not null: the voltage on
every stepper motor line is a sine wave with null mean voltage.
Check the continuity of the stepper motor connections. In particular
the resistance between CNA#8 and the minus battery (with the
stepper motor at rest) is expected being very low (close to 30
ohms).
CAN Bus Code =248
This alarm occurs for a fault on the command potentiometer
(CPOC1 on CNA#9, CPOC2 on CNA#8).
When a single command pot is chosen, the alarm occurs if its
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