Zapi ACE3, User Manual

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AFFZP0BB – ACE3 – User Manual Page – 91/139
4)
LOGIC FAILURE #3
Cause
An hardware problem in the logic board due to high currents (overload). An
overcurrent condition is triggered even if the power bridge is not driven.
Troubleshooting
The failure lies in the controller hardware. Replace the controller.
5)
POSITIVE LC OPEN
Cause
The voltage feedback of LC driver (A16) is different from expected, i.e. it is not
in accordance with the driver operation.
Troubleshooting
- Verify LC coil is properly connected.
- Verify CONF. POSITIVE LC parameter is set in accordance with the actual
coil positive supply (see paragraph 7.2.5). Software, depending on the
parameter value, makes a proper diagnosis; a mismatch between the
hardware and the parameter configuration could generate a false fault.
- In case no failures/problems have been found, the problem is in the
controller, which has to be replaced.
6)
CTRAP THRESHOLD
Cause
This alarm occurs when a mismatch is detected between the setpoint for the
overcurrent detection circuit (dependent on parameter DUTY PWM CTRAP, see
paragraph 7.2.4) and the feedback of the actual threshold value.
Troubleshooting
The failure lies in the controller hardware. Replace the logic board.
7)
WATCH DOG
Cause
This is a safety related test. It is a self-diagnosis test that involves the logic
between master and supervisor microcontrollers.
Troubleshooting
This alarm could be caused by a CAN bus malfunctioning, which blinds
master-supervisor communication.
8)
WRONG RAM MEM. 05
Cause
The algorithm implemented to check the main RAM registers finds wrong
contents: the register is “dirty”. This alarm inhibits the machine operations.
Troubleshooting
Try to switch the key off and then on again, if the alarm is still present replace
the logic board.