Diagnostics
11.2 List of faults and alarms
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
401
Fault
Cause
Remedy
F31131: Encoder 1: Deviation
position incremental/absolute
too large
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
•
Absolute encoder
When cyclically reading the absolute
position, an excessively high difference
to the incremental position was detect-
ed. The absolute position that was read
is rejected.
Limit value for the deviation: 15 pulses
(60 quadrants).
•
Incremental encoder
When the zero is passed, a deviation in
the incremental position was detected.
The first zero mark passed supplies the
reference point for all subsequent
checks. The other zero marks must
have n times the distance referred to
the first zero mark.
Divation in quadrants (1 pulse = 4 quad-
rants).
•
Check that the encoder cables are routed
in compliance with EMC.
•
Check the plug connections.
•
Replace the encoder or encoder cable.
•
Check whether the coding disk is dirty or
there are strong ambient magnetic fields.
F31150: Initialization error
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
Encoder functionality is not operating cor-
rectly.
•
Check the encoder type used (incremen-
tal/absolute) and the encoder cable.
•
If relevant, note additional fault messages
that describe the fault in detail.
F52903: Fault inconsistence
between fault status and fault
buffer
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
Fault status and fault number buffer are
inconsistent.
Repower on.
F52904: Control mode
change
Reaction: OFF2
Acknowledgement: POWER
ON
When the control mode is changed, the
drive must be saved and restarted.
Save and restart the drive.
F52911: Positive torque limi-
tation value error
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
One of positive torque limitation values
(p29050, p1520) becomes less than 0.
Configure all of positive torque limitation val-
ues (p29050, p1520) not less than 0.
F52912: Negative torque
limitation value error
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
One of negative torque limitation values
(p29051, p1521) becomes greater than 0.
Configure all of negative torque limitation
values (p29051, 1521) not greater than 0.
