Zapi SEM-1C, Руководство пользователя

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6.1 ANALYSIS OF ALARMS DISPLAYED ON THE CONSOLE
1 LOGIC FAILURE #1
This test is carried out at the start-up.
Possible cause: failure of the logic board
2 WATCH DOG
The test is executed at the key turn-on, at the stand-by and on running. Possible
causes:
a) Watch-dog hardware circuit not OK;
b) Software not OK.
3 EEPROM OK
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will have been replaced by the default parameters.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 FORW + BACK
This check is made continually. The alarm is generated when forward and reverse
direction are requested simultaneously. Possible causes:
a) Error in Wiring.
b) Welding or Failure of a direction switch.
c) Error in the starting sequence from the operator.
6 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.
7 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) Short circuit motor windings to chassis.
c) Defect in the power unit.
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