Zapi AC-0 SSL User Manual

AE0ZP0EC - AC-0 SSL SENSORED - User Manual Page - 95/100
2) CONTACTOR DRIVER
MDI-PRC Code = 75
- Cause: This alarm occurs when the voltage on the Main Contactor is
smaller than expected: this means that the Main Contactor Coil
has a null voltage when supplied.
- Remedy: Check the coils of the Main Contactor (CNA#1) is not short
circuited. If it isn’t, probably it is necessary to replace the
controller because the driver of the Main Contactor is broken.
3) CONTACTOR OPEN
MDI-PRC Code = 38
- Cause: The main contactor coil has been driven by the logic board, but
the contactor does not close.
- Remedy: Two possible reasons: the wires to the coil are interrupted or
not well connected or the contact of the contactor is not
properly working.
4) CONTACTOR CLOSED
MDI-PRC Code = 37
- Cause: The controller checks if the MC contact is closed when the coil
isn’t driven, trying to discharge the capacitor bank. If they don’t
discharge, the fault condition is entered.
- Remedy: It is suggested to check the contactor contact, if it is
mechanically stuck or pasted.
5) DRIVER SHORTED
MDI-PRC Code = 74
- Cause: This alarm occurs when the voltage on the Main Contactor is
higher than expected: this means that the Main Contactor Coil
has a high voltage although it is not supplied.
- Remedy: Probably it is necessary to replace the controller because the
driver of the Main Contactor is short circuited.
6) AUX OUTPUT KO
MDI-PRC Code = 16
- Cause: This alarm occurs when the feedforward PWM generated by the
controller to supply the Electromechanical Brake and the actual
feedback voltage on the Electromechanical Brake are not
matched in between. The diagnosis is made only when the
Tiller Switch is active.
Then:
a) When the feedforward PWM is less than 10% of the battery
voltage, the Actual voltage on the Electromechanical Brake
is expected low. If it is higher than 14 V it means the
Electromechanical Brake never Brakes the truck (probably
the Driver of the Electromechanical Brake is short circuited)
and this alarm occurs.
b) When the feedforward PWM is higher than 70% of the
battery voltage, the Actual voltage on the
Electromechanical Brake is expected high. If it is lower than
14 V it means the Electromechanical Brake always gets the
truck Braked (probably the Driver of the Electromechanical
Brake is opened) and this alarm occurs.
- Remedy: Probably it is necessary to replace the controller because the
driver of the Electromechanical Brake has a failure.

Zapi AC-0 SSL Specifications

General

Brand	Zapi
Model	AC-0 SSL
Category	Inverter
Language	English