EP Equipment 508000003143, Руководство по эксплуатации

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42
38
CONTACT
OR OPEN
The LC coil is driven by the controller,
but it seems that the power contacts
do not close. In order to detect this
condition the controller injects a DC
current into the motor and checks the
voltage on power capacitor. If the
power capacitors get discharged it
means that the main contactor is open.
LC contacts are not working. Replace
the LC.
52
PUMP I=0
EVER
While the pump motor is running, the
current feedback is constantly stuck to
zero.
1-Check the motor connection, that
there is continuity. If the motor
connection is opened, the current
cannot flow, so the test fails and the
error code is displayed;
2-If everything is ok for what it
concerns the motor, the problem
could be in
the current sensor or in the related
circuit.
53
STBY I
HIGH In standby, the sensor detects a
current value different from zero.
The current sensor or the current
feedback circuit is damaged. Replace
the controller.
60
CAPACITO
R
CHARGE
When the key is switched on, the
inverter tries to charge the power
capacitors through the series of a PTC
and a power resistance, checking if the
capacitors are charged within a certain
timeout. If the capacitor voltage results
less than a certain percentage of the
nominal battery voltage, the alarm is
raised and the main contactor is not
closed.
1-Check if an external load in parallel
to the capacitor bank, which sinks
current from the capacitors-charging
circuit, thus preventing the caps from
charging well. Check if a lamp or a
dc/dc converter or an auxiliary load is
placed in parallel to the capacitor
bank.
2- The charging resistance or PTC
may be broken. Insert a power
resistance across line-contactor
power terminals; if the alarm
disappears, it means that the
charging resistance is damaged.
3- The charging circuit has a failure or
there is a problem in the power
section. Replace the controller.
Error Message
Possible cause Fault elimination
Error
Error
text