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Fault can be caused by a key input signal characterized by pulses below the
undervoltage threshold, possibly due to external loads like DC/DC converters
starting-up, relays or contactors during switching periods, solenoids energizing or
de-energizing. Consider to remove such loads.
If no voltage transient is detected on the supply line and the alarm is present
every time the key switches on, the failure probably lies in the controller
hardware. Replace the logic board.
Troubleshooting (fault displayed during motor driving)
If the alarm occurs during motor acceleration or when there is a hydraulic-related
request, check the battery charge, the battery health and power-cable
connections.
LOGIC FAILURE #2 (MDI/LED code = 18)
Cause
Fault in the hardware section of the logic board which deals with voltage
feedbacks of motor phases.
Troubleshooting
The failure lies in the controller hardware. Replace the controller.
LOGIC FAILURE #3 (MDI/LED code = 17)
Cause
A 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.
M/S PAR CHK MISM (MDI/LED code = 97)
Cause:
At start-up there is a mismatch in the parameter checksum between the master
and the supervisor microcontrollers.
Troubleshooting:
Restore and save again the parameters list.
COIL SHOR. MC (MDI/LED code = 76)
Cause:
This alarm occurs when there is an overload of the MC driver (pin A26). As soon
as the overload condition disappears, the alarm will be removed automatically by
releasing and then enabling a travel demand.
Troubleshooting:
The typical root cause is in the wiring harness or in the load coil. So the very first
check to carry out concerns the connections between the controller outputs and
the loads.
Collect information about characteristics of the coils connected to the two drivers
and ask for assistance to a Zapi technician in order to verify that the maximum
current that can be supplied by the hardware is not exceeded.
COIL SHOR. EB (MDI/LED code = 76)
Cause:
AFNZPxxx – DUALACE2 NEW GENERATION – User Manual
Page 136/169
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Troubleshooting
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Do you have a question about the DUALACE2 NEW GENERATION and is the answer not in the manual?
Questions and answers
Como comprobar el funcionamiento del controlador dualac2 sin display
You can check the operation of the Zapi DUALACE2 NEW GENERATION controller without a display using the following methods:
1. Zapi Smart Console – Connect the Zapi Smart Console to the CAN bus to access diagnostics and parameter settings.
2. PC CAN Console – Use the PC CAN Console software to monitor and adjust controller settings.
3. Self-Diagnosis Feature – The controller performs self-diagnosis, and faults can be displayed using Zapi tools.
4. Alarm History Log – Check the log of alarms to review past faults and system behavior.
5. TESTER Function – Use the TESTER function to monitor key operational readouts.
These methods allow you to diagnose and verify the controller’s operation without an external display.
This answer is automatically generated
A brumby electrical truck that has a zapi inv.dace2, records the failure 244 "Warning Slave It depends on the supervisor uc", and the alarm 248 "Mc is Opened, eb is applied". On the other hand, the LED does not turn on, but in the manual I did not find the LED code. I would like more certainty about whether the failure is from the controller and the LED code for this Zapi model.
Failure 244 "Warning Slave" depends on the supervisor microcontroller (µC). No specific effect or troubleshooting steps are provided in the available context.
Alarm 248 "MC is Opened, EB is Applied" indicates that the main contactor (MC) is open, and the electric brake (EB) is applied. This typically occurs during start-up, standby, or other system states.
The LED code for this model is not explicitly provided in the available context.
This answer is automatically generated