ABB PST30 Installation And Maintenance Manual page 87

11:4 Start up faults
Status
Power on Fault Protection
Power on Fault Protection
11:5 Fault indication
Status
Power on Fault Protection
Fault Phase Loss
Reset Back
Power on Fault Protection
Fault Connection
Reset Back
Frequency fault
Power on Fault Protection
Fault Wrong Freq
Reset Back
Line side fault
Power on Fault Protection
Fault Line Side
Reset Back
By-Pass does not open fault
Power on Fault Protection
Fault BP Closed
Reset Back
By-Pass does not close fault
Power on Fault Protection
Fault BP Open
Reset Back
Low Voltage Products & Systems
ABB Inc. • 888-385-1221 • www.abb-control.com
Chapter 11
Troubleshooting
Possible cause
LCD Auto shut off the keypad
Control voltage is not connected
Possible cause
The main contactor or circuit breaker is open
Fuse blown
Any external device open / tripped
Main contactor opens too quickly
The motor connection is not correct
Shorted SCR at start
Shorted SCR at start
The frequency is out of range. (47.5 - 52.5Hz or
57-63 Hz)
The main voltage is not correct on the line side
The by-pass contactor is not opening properly
The by-pass contactor is not closing properly
Solution
Touch any key onn the keypad
Connect the control voltage according to the circuit
diagram
Solution
Check and close contactor / breaker or any external
switching device
Check and replace the fuse in all (3) three phases
Check upstream disconnect or fuses. Check all power
cable connections..
Add a time delay before opening
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
Without by-pass
• Check that the parameter Ext byPass is set to No.
With by-pass
• Check why the contactor is not opening and make
necessary actions.
• Check that the parameter Ext ByPass is set to Yes
Without by-pass
• Check that the parameter Ext byPass is set to No.
With by-pass
• Check why the contactor is not closing and make
necessary actions.
• Check that the parameter Ext ByPass is set to Yes
11
11.3
1SXU 132 021 M0201