Decoding Of Ac-0 Operating Faults - Stiga e-PARK 220 Workshop Manual

WORKSHOP MANUAL
e-PARK 220

9.4.3 Decoding of AC-0 operating faults

The table includes the decoding of all the messages indicating the operating faults of the ACE-0
control unit, with an indication of the actions to be taken for their solution.
Code Definitions
8 WATCH DOG
13 EEPROM KO
LOGIC FAILURE
17
LOGIC FAILURE
18
LOGIC FAILURE
19
VMN LOW
30 - 31
VMN HIGH
CONTACTOR
37
CLOSED
CONTACTOR
38
I=0 EVER –
NO CURRENT
49
MEASURMENT
DURING TRACTION
53 STBY I HIGH
CAPACITOR
60
CHARGE
9 - ELECTRONIC MANAGEMENT - BATTERY
The test takes place both in standby mode and during operation. It is an internal self-
diagnosis test of the mechanism.
• Solution: Check the motor connection and the continuity of its three phases If the
alarm persists, the controller must be replaced.
Malfunction in the memory section where the control parameters are saved; this
alarm prevents the machine from operating.
If the fault persists even after turning the machine off and on again, replace the
mechanism. If the alarm disappears, remember that the previously saved param-
eters are deleted and are replaced by the default values.
• Cause: occurs when the circuit is turned ON to limit the peak current in the control-
ler via the HW.
• Solution: This is probably an electrical or mechanical fault. If the fault persists, the
#3 controller must be replaced.
A fault has occurred in the hardware section of the motherboard that manages the
electrical protection of the hardware. Replace the motherboard.
A fault has occurred in the hardware section of the motherboard that handles phase
#2 voltage feedback. Replace the motherboard.
This alarm signals the activation of an under-voltage/over-voltage protection mode.
There are two possible reasons for this:
a. An actual under-voltage/over-voltage situation has occurred.
#1
B. A fault has occurred in the hardware section of the motherboard that handles
over-voltage protection. Replace the motherboard.
The test takes place during initial diagnosis and in standby mode. Possible causes:
a. there is a problem with the motor connections or with the motor electrical circuit;
check if the 3 phases are correctly connected; check for any dispersion of the mo-
tor to earth;
b. inverter faulty; replace it.
The controller checks whether the KZTP contactor contact is closed when the coil is
not operative There are two possible reasons for this:
• Solution: It is recommended to check whether the contactor contact is mechani-
cally blocked or stuck.
The KZTP contactor coil has been operated from the motherboard, but the contactor
does not close. There are two possible reasons for this:
OPEN a) The cables connected to the coil are interrupted or poorly connected;
b) The contactor contact does not function properly.
• Cause: This test is performed when the motor is running and verifies
that the current feedback sensor does not always lock at 0.
• Solution: If there are no faults in the motor, the problem may be in the current sen-
sor or in the current circuit.
Test performed in standby mode. Check if the current is 0. If the test is not per-
formed, an alarm appears that prevents the machine from operating. Possible
causes:
a. current sensor fault;
b. mechanism failure; if alarm persists, controller must be replaced.
• Cause: During operation, a resistance connected between the key and the track
capacitors keeps these last loads before the main capacitor closes. This alarm oc-
curs when the track capacitor voltage (measured at phase V) is low and does not
increase when the main capacitor is opened.
When the key is activated, the inverter tries to charge the capacitor via an electrical
resistance and checks whether the capacitor is charged within a definite time. If this
does not happen, an alarm appears and the main capacitor does not close. Possible
causes:
- Another device, connected in parallel to the capacitor line, is faulty
- At least one motor phase is not connected to the controller or is broken.
- An electrical or mechanism fault has occurred in the controller.
CHAPTER
Probable Cause and Consequent Action
EDITION PAGE
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