Status
Possible cause
Solution
Bad motor sound during start.
Bad motor sound during stop.
Incorrect Initial/End level.
•
Try different settings for the parameter Initial /End
Voltage.
See chapter 7 Functions
, or contact your
ABB Sales Office.
Incorrect Current limit level
or Torque limit level.
•
Try different settings for the parameter Current limit
level or Torque limit level.
See chapter 7 Functions
,
or contact your ABB Sales Office.
The motor is too small.
(Current is out of measuring
range.)
•
Check that the softstarter corresponds to the motor
size.
•
For test purposes it is possoble to use small motor
mode.
See chapter 7 Functions
.
Thyristor not conducting properly.
•
Contact your ABB Sales Office.
Incorrect ramp time for stop.
•
Try differ
ent ramp times for stop (some adjustments
can be necessary for best result).
See chapter 7 Functions.
Start and stop command given at
the same time.
•
Check that start and stop command is not given at
the same time.
The Operational voltage is below
175 V.
•
Check the Operational voltage.
Motor does not start when given start
command by the hardwire inputs.
Control wiring is not correct.
Start and stop command given at
the same time.
Keypad is in Local control mode.
•
Check connections for start and stop.
•
Check that start and stop command is not given at
the same time.
•
Check that the keypad is not in Local Control mode.
Press the R\L-key to change to Remote Control
mode.
•
Check that parameter Fieldbus control is set to No.
•
Perform a reset on any active event.
Reset tripping events.
Motor does not start with fieldbus.
Softstarter has tripped on fault or
protection.
•
Perform a reset on any active event.
Reset tripping events.
Softstarter is in Local mode.
•
Check that the Stop bit of the binary output telegram
setting is set to 1.
•
Verify that parameters are matching between the PLC
and the softstarter fieldbus documentation for the
fieldbus protocol used.
•
Check that the Auto mode bit of the binary output
telegram setting is set to 1.
•
Check if the HMI is set to remote mode.
•
Check that the Local Mode digital input on the ABB
FieldBusPlug adapter is set to Remote.
•
Check that Fieldbus disable control in DI is not
connected.
•
Check that the Fieldbus control parameter is set to
On.
Fieldbus operation when fault
parameter is set to Switch to I/O
control.
•
If the parameter Fieldbus failure op is set to Switch
to I/O control when fault occurs, there will be a 10
seconds delay before it is possible to re-start after
communication is re-established.
10
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