7
7.3 List of faults and warnings
7-693
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
787 Induction motor oper.: feedforward control gain motor
\%d cannot be displayed
Cause The feedforward control gain for induction motors cannot be repre-
sented in the internal numerical format if the motor moment of inertia
and rated motor torque were unfavorably selected.
Remedy Operation without encoder:
Reduce the encoder pulse number (P1005), as this is used in the inter-
nal numerical format.
Operation with encoder:
Reduce the speed controller cycle (P1001).
Acknowledgement RESET FAULT MEMORY
Stop response STOP II (SRM, SLM) STOP I (ARM)
788 P0891 for drive B only
Cause An actual-value link has been activated (P0891 = 1) for drive A. The
hardware does not permit this setting.
Remedy Set P0891 to 0 for drive A.
Acknowledgement POWER ON
Stop response STOP II (SRM, SLM) STOP I (ARM)
789 Setpoint transfer SimoCom U ==> drive interrupted
Cause The setpoint transfer from SimoCom U to the drive was interrupted, i.e.
there is no longer an online connection. The Master Control was re-
turned to the drive.
Communication between the two communication partners was faulty.
When traversing the drive via SimoCom U, other functions were exe-
cuted on the PG/PC (e.g. open online help, open file), so that the drive
can only be irregularly supplied from SimoCom U.
Remedy – Check whether SimoCom U is still operating correctly, if required,
re-start
– Check whether the communication connection is OK, if required,
replace the connecting cable
– When in the online mode, do not select any time-intensive functions
Acknowledgement POWER ON
Stop response STOP II (SRM, SLM) STOP I (ARM)
7 Fault Handling/Diagnostics
04.05
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