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ANALOG INPUT (MDI/LED code = 96)
Cause
This alarm occurs when the A/D conversion of the analog inputs returns frozen
values, on all the converted signals, for more than 400 ms. The goal of this
diagnosis is to detect a failure in the A/D converter or a problem in the code flow
that skips the refresh of the analog signal conversion.
Troubleshooting
If the problem occurs permanently it is necessary to replace the logic board.
AUX BATT. SHORT. (MDI/LED code = 27)
Cause:
The voltage on PEB output (pin A27) is at high value even if it should not.
For the versions where the high driver is not installed, it is possible to decide
where the positive supply for pin
A27
comes from by choosing a dedicated
hardware configuration. The parameter POSITIVE E.B. has to be set in
accordance with the hardware configuration (see paragraph 8.2.7), because the
software makes a proper diagnosis depending on the parameter; a wrong setting
could generate a false fault. The available choices are:
0 = PEB is managed by the high side driver supplied by PIN
A2.
This is the
standard configuration
1 = PEB comes from the SEAT input (A8).
2 = PEB is externally connected after the main contactor..
This alarm can only appear if POSITIVE E.B. is set as 1 SEAT.
Troubleshooting:
Verify that the parameter POSITIVE E.B. is set in accordance with the actual coil
positive supply (see paragraph 8.2.7).
In case no failures/problems have been found, the problem is in the controller,
which has to be replaced.
BATTERY LOW (MDI/LED code = 0)
Cause:
Parameter BATTERY CHECK is other than 0 (SET OPTION list, paragraph 8.2.3)
and battery charge is evaluated to be lower than BATT.LOW TRESHLD
(ADJUSTMENTS list, paragraph 8.2.5).
Troubleshooting:
Check the battery charge and charge it if necessary.
If the battery is actually charged, measure the battery voltage through a voltmeter
and compare it with the BATTERY VOLTAGE reading in the TESTER function. If
they are different, adjust the ADJUST BATTERY parameter (ADJUSTMENTS list,
paragraph 8.2.5) with the value measured through the voltmeter.
If the problem is not solved, replace the logic board.
BRAKE RUN OUT (MDI/LED code = 63)
Cause:
The CPOT BRAKE input read by the microcontroller is out of the range defined
by parameters SET PBRK. MIN and SET PBRK. MAX (ADJUSTMENTS list,
paragraph 8.2.5).
Troubleshooting:
Check the mechanical calibration and the functionality of the brake potentiometer.
Acquire the minimum and maximum potentiometer values.
AFNZPxxx– DUALACE2 NEW GENERATION – User Manual
Page 127/169
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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