AE0ZP0EC - AC-0 SSL SENSORED - User Manual
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In this case it is necessary to replace the controller.
2) VMN
HIGH
MDI-PRC Code = 31
- Cause:
Before to switch the main contactor on, the SW turns on
sequence the Bottom side Power Mosfets and expects the
phase V voltage falls to GND value. If the phase V remains high
level this alarm occurs.
- Remedy: Two
possibilities:
-
At least a motor phase is not connected to the controller
or broken.
-
A Power Failure (e.g. a Bottom side Power Mosfet
opened) or a Logic Failure occurred in the controller.
In this case it is necessary to replace the controller.
3) VMN
LOW
MDI-PRC Code = 30
- Cause:
Before to switch the main contactor on, the SW turns on
sequence the Top side Power Mosfets and expects the phase V
voltage increases toward the rail capacitor value. If the phase V
does not increases this alarm occurs.
This alarm may occur also when the initial diagnosis is
overcome, and so the Main Contactor is expected to be closed.
Then, when the operator asks the truck moving but the +Batt
terminal of the controller is lower voltage than the Battery
voltage, this alarm occurs (Main Contactor has lost the contact
although it is closed).
- Remedy:
If the problem occurs before the Main Contactor closes,
probably a Power failure (e.g. a Bottom side Power Mosfet
short circuited or a Top side Power Mosfet broken) or a Logic
Failure occurred in the controller. If the problem occurs when
the operator turns the truck moving the problem is the Battery
positive is not connected to the +Batt terminal of the controller
(check the continuity of the main contactor).
If the problem occurs permanently it is necessary to replace the
controller.
12.1.4 Four Blinks Alarms
1) VACC NOT OK
MDI-PRC Code = 78
- Cause:
The test is made at key-on and after 20 sec that both the travel
demands have turned disactive. This alarm occurs if the
ACCELERATOR reading in the TESTER menu is higher than
1.0 V (it means the wiper of the potentiometer is higher than 2
Vdc) when the accelerator is released.
- Remedy:
Check the mechanical calibration and the functionality of the
potentiometer.
2) PEDAL WIRE KO
MDI-PRC Code = 86
- Cause:
The SW continuously checks for the connection of the two
supply ends of the lift potentiometer. The test consists of
reading the voltage drop on a sense diode, connected between
NPOT (CNB#11) and GND and cascaded with the
potentiometer: if the potentiometer gets disconnected on PPOT
