Siemens SINAMICS V90 Operating Instructions Manual page 326

Diagnostics
12.2 List of faults and alarms
Fault
F31131: Encoder 1: Deviation
position incremental/absolute
too large
Message class: Actual posi-
tion/speed value incorrect or not
available (11)
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
F31150: Initialization error
Message class: Error in the
parameteriza-
tion/configuration/commissionin
g procedure (18)
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
F52904: Control mode change
Message class: General drive
fault (19)
Reaction: OFF2
Acknowledgement: POWER ON
F52980: Absolute encoder
motor changed
Message class: General drive
fault (19)
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
F52981: Absolute encoder
motor mismatched
Message class: General drive
fault (19)
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
324
Cause
Absolute encoder
•
When cyclically reading the absolute
position, an excessively high differ-
ence to the incremental position was
detected. The absolute position that
was read is rejected.
Limit value for the deviation: 15 puls-
es (60 quadrants).
Incremental encoder
•
When the zero is passed, a deviation
in the incremental position was de-
tected.
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.
Deviation in quadrants (1 pulse = 4
quadrants).
Encoder functionality is not operating
correctly.
When the control mode is changed, the
drive must be saved and restarted.
The servo motor with an absolute en-
coder is changed. For example, the
actual motor ID is different from the
commissioned motor ID.
Connected absolute encoder motor
cannot be operated. The servo drive in
use does not support the Motor ID.
Remedy
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.
Check the encoder type used (incremen-
•
tal/absolute) and the encoder cable.
If relevant, note additional fault messages
•
that describe the fault in detail.
Save and restart the drive.
The servo motor will be automatically config-
ured after the following measures have been
implemented:
Acknowledge the fault firstly and then
•
save the newly commissioned parameters
to the drive ROM
Use a suitable absolute encoder motor.
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2020, A5E37208830-008