Siemens SINAMICS S120 Function Manual page 269
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- Function manual (982 pages) ,
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Remedy:
● For fault cause 1:
– Deactivate smooth starting: p1401.0 = 0
– Deactivate quick magnetization: p1401.6 = 0
● For fault cause 2:
– Deactivate flux build-up control: p1401.2 = 0
– Deactivate quick magnetization: p1401.6 = 0
● For fault cause 3:
– Change Rs identification parameter settings: p0621 = 0, 1
– Deactivate quick magnetization: p1401.6 = 0
Flux controller output limited
If the current limit p0640[D] is set very low (below the rated magnetizing current value in
p0320[M]), the parameterized flux setpoint p1570 [D] might not be reached at all.
As soon as the time in p0346 (magnetization time) is exceeded, fault F07411 is output.
Generally, the magnetization time is significantly longer than the flux build-up time
associated with quick magnetization.
Cause:
With quick magnetization configured (p1401.6 = 1), the specified flux setpoint is not reached
even though the current setpoint = 90% of maximum current.
● Motor data is incorrect.
● Motor data and motor connection type (star/delta) do not match.
● Current limit in p0640 is set too low for the motor concerned.
● Induction motor (encoderless, open-loop control) at I2t limit.
● Motor Module rating is too low.
Remedy:
● Correct the motor data.
● Check the motor connection type.
● Correct the current limits (p0640, p0323).
● Reduce the load on the induction motor.
● Use a larger Motor Module if necessary.
● Check the motor supply cable.
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
5.16 Fast magnetization for induction motors
Vector control
269
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