Trouble shooting
Chapter 11
186
1SFC132003M0201
Underload protection
The motor current is below set
level and time.
• Check and correct the reason for the
underload.
• Check that the settings are according to
the operation conditions.
Locked rotor protection
The motor is running stiff by
some reason.
A damaged bearing or a stucked
load could be possible causes.
• Check the bearings of the motor and
load.
• Check that the load is not running stiff.
High current protection
A fault current, higher than 8
times the softstarter ratings, has
occurred.
• Check the circuits including the motor for
any insulation fault phase to phase or
earth fault.
Phase imbalance protection
Unbalance in the phase currents. • Check the main voltage and the motor
circuit.
• Restart the motor and check the phase
currents
Phase reversal protection
The phase sequence is not
correct.
• Change the phase sequence on the line
side to (L1-L2-L3).
Status
Possible cause
Solution
Power on
Protection
Fault
Prot Underload
Reset
Back
Power on
Protection
Fault
Prot Locked Rot
Reset
Back
Power on
Protection
Fault
Prot High I
Reset
Back
Power on
Protection
Fault
Prot Phase Imb.
Reset
Back
Power on
Protection
Fault
Prot Phase Rev
Reset
Back
Summary of Contents for PST105
Page 2: ...This manual belongs to ...
Page 4: ......
Page 8: ...Chapter 8 1SFC132003M0201 Notes ...
Page 10: ...Introduction 10 1SFC132003M0201 ...
Page 14: ...Introduction Chapter 1 14 1SFC132003M0201 ...
Page 16: ...Quickstart 16 1SFC132003M0201 ...
Page 20: ...Description 20 1SFC132003M0201 ...
Page 34: ...Description Chapter 3 34 1SFC132003M0201 ...
Page 36: ...Mounting 36 1SFC132003M0201 ...
Page 40: ...Mounting Chapter 4 40 1SFC132003M0201 ...
Page 42: ...Connection 42 1SFC132003M0201 ...
Page 60: ...Connection Chapter 5 60 1SFC132003M0201 ...
Page 62: ...Human Machine Interface HMI 62 1SFC132003M0201 ...
Page 74: ...Human Machine Interface HMI Chapter 6 74 1SFC132003M0201 ...
Page 76: ...Setting and configuration 76 1SFC132003M0201 ...
Page 120: ...Fieldbus communication option 120 1SFC132003M0201 ...
Page 124: ...Maintenance 124 1SFC132003M0201 ...
Page 126: ...Maintenance Chapter 9 126 1SFC132003M0201 ...
Page 130: ...Chapter 130 1SFC132003M0201 ...
Page 178: ...Trouble shooting 178 1SFC132003M0201 ...
Page 188: ...Trouble shooting Chapter 11 188 1SFC132003M0201 ...
Page 190: ...Diagrams 190 1SFC132003M0201 ...
Page 199: ......