ABB PST210 - Page 87

Chapter 11
Troubleshooting
11:4 Start up faults
Status Possible cause Solution
Power on ProtectionFault
LCD Auto shut off the keypad Touch any key onn the keypad
Power on ProtectionFault
Control voltage is not connected
Connect the control voltage according to the circuit
diagram
11:5 Fault indication
Status Possible cause Solution
Power on ProtectionFault
Fault Phase Loss
Reset Back
The main contactor or circuit breaker is open
Fuse blown
Any external device open / tripped
Main contactor opens too quickly
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
Power on ProtectionFault
Fault Connection
Reset Back
The motor connection is not correct
Shorted SCR at start
Shorted SCR at start
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
Frequency fault
Power on ProtectionFault
Fault Wrong Freq
Reset Back
The frequency is out of range. (47.5 - 52.5Hz or
57-63 Hz)
Check and correct the frequency
Line side fault
Power on ProtectionFault
Fault Line Side
Reset Back
The main voltage is not correct on the line side Check and correct voltage on the line side
By-Pass does not open fault
Power on ProtectionFault
Fault BP Closed
Reset Back
The by-pass contactor is not opening properly 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
By-Pass does not close fault
Power on ProtectionFault
Fault BP Open
Reset Back
The by-pass contactor is not closing properly 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
Low Voltage Products & Systems 11.3
ABB Inc. • 888-385-1221 • www.abb-control.com 1SXU 132 021 M0201
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