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6.1 ANALYSIS OF ALARMS DISPLAYED ON THE CONSOLE
1
LOGIC FAILURE #1
During the initial diagnosis the main Microprocessor performs a check of the Main
Contactor's control circuit, and verifies the condition. If this is not correct this Alarm
is generated.
2
MICRO ST6215 KO
During the initial diagnosis the main Microprocessor tests and verifies the operation
of the safety microprocessor. If not correct this Alarm is generated.
Possible causes:
a) Failure of the safety Microprocessor.
b) The safety Microprocessor has established a condition of danger and has disa-
bled operation of the Main Contactor.
3
EEPROM KO
Fault in the area of memory where the adjustment parameters are stored. This
Alarm inhibits machine operation. If the fault continues when the Key Switch is re-
cycled, replace the logic. If the fault disappears, the previously stored Parameters
will have been replaced by the default parameters.
4
INCORRECT START
Alarm generated by an incorrect Starting Sequence. Possible causes:
a) The ENABLE microswitch has welded or failed.
b) Error in the starting sequence from the operator.
c) Error in the wiring.
5
HANDBRAKE
Hand Brake Switch operated during travel.
6
FORW+ BACK
This check is made continually. The Alarm is generated when forward and reverse
directions are requested simultaneously. Possible causes:
a) Incorrect Wiring.
b) Welding or Failure of a direction switch.
c) Incorrect operation from the operator.
7
CAPACITOR CHARGE
This check is made during the initial diagnosis. This Alarm is generated if the Ca-
pacitors are not charged within 500ms after the Key Switch is closed. Probable
cause is failure inside the power block.
8
VMN NOT OK
This test is performed at rest, with the general Contactor Closed, and also during
operation. At rest if VMN is lower than battery voltage this Alarm is generated.
During operation this Alarm is generated if VMN doesn’t follow the duty-cycle of the
chopper. Possible causes:
a) Incorrect Motor connection.
b) Frame fault of motor to chassis.
c) Defect in the power unit.
