Fault Indication - ABB PST Installation And Maintenance Manual

Status
Phase loss fault
Power on
Fault Phase Loss
Reset
Connection fault
Power on
Fault Connection
Reset
Frequency fault
Power on
Fault Wrong Freq
Reset
Line side Fault
Power on
Fault Line Side
Reset
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Chapter 11 - Troubleshooting
11:4
Possible cause
The main contactor or circuit
breaker is open.
Fault Protection
Fuse blown.
Any external device open /
Back
tripped.
The motor connection is not
correct.
Fault Protection
Back
Shorted SCR at start.
Shorted SCR at start.
The frequency is out of range.
(47.5 - 52.5Hz or 57 - 63Hz
Fault Protection
Back
The main voltage is not correct on
the line side.
Fault Protection
Back

Fault Indication

Solution
• Check and close contactor / breaker
or any external switching device.
• Check and replace the fuse in all
three (3) phases
In Line connected
• Check that there are no connections
missing to the motor.
• Check that the connections are
carried out correctly
• Check and replace.
Inside Delta connected
• Check that there are no connections
missing to the motor.
• Check that the circuits are closed
and correspond to the circuit
diagram.
• Check and replace.
• Check and correct the frequency.
• Check and correct voltage on the
line side.
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AC 1006.9 - 5/03