Table of Contents
Advertisement
Functions, monitoring and protective functions
9.3 Drive functions
Flux controller output limited
If the current limit p0640[D] is set very low (below the rated magnetizing current value,
p0320), it is possible that the parameterized flux setpoint p1570 is never reached.
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:
When fast magnetization is 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 controlled) at I
● Power unit 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.
● Check the motor feeder cable.
● Possibly use a higher rating power unit.
Function diagrams
FP 6491
FP 6722
FP 6723
Parameters
• r0207
• p0320
• p0346
• p0621
• p0640
• p0644
• p1401
518
Flux control configuration
Field weakening characteristic, Id setpoint (ASM, p0300 = 1)
Field weakening controller, flux controller (ASM, p0300 = 1)
Rated power unit current
Motor rated magnetization current / short-circuit current
Motor excitation build-up time
Stator resistance identification after restart
Current limit
Induction motor excitation current limit
Flux control configuration
t limit.
2
Operating Instructions, 12/2018, A5E36652151A
Enclosed Drives
Advertisement
Table of Contents
