Diagnostics
11.2 List of faults and alarms
SINAMICS V90, SIMOTICS S-1FL6
400
Operating Instructions, 04/2019, A5E36037884-007
Fault
Cause
Remedy
F31100: Zero mark distance
error
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
The measured zero mark distance does
not correspond to the parameterized zero
mark distance.
For distance-coded encoders, the zero
mark distance is determined from zero
marks detected pairs. This means that if a
zero mark is missing, depending on the
pair generation, this cannot result in a fault
and also has no effect in the system.
•
Check that the encoder cables are routed
in compliance with EMC.
•
Check the plug connections
•
Replace the encoder or encoder cable
F31101: Zero mark failed
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
The 1.5 x parameterized zero mark dis-
tance was exceeded.
•
Check that the encoder cables are routed
in compliance with EMC.
•
Check the plug connections.
•
Replace the encoder or encoder cable.
F31110: Serial communica-
tions error
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
Serial communication protocol transfer
error between the encoder and evaluation
module.
•
Check the encoder cable and shielding
connection.
•
Replace the encoder cable/encoder.
F31111: Encoder 1: Absolute
encoder internal error
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
The absolute encoder fault word supplies
fault bits that have been set.
•
Check the encoder cable connection and
make sure the cables are routed in com-
pliance with EMC.
•
Check the motor temperature.
•
Replace the motor/encoder.
F31112: Error bit set in the
serial protocol
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
The encoder sends a set error bit via the
serial protocol.
Refer to F31111.
F31117: Inversion error sig-
nals A/B/R
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
For a square-wave encoder (bipolar, dou-
ble ended) signals A*, B* and R* are not
inverted with respect to signals A, B and R.
•
Check the encoder and cable and the
connection of them.
•
Does the encoder supply signals and the
associated inverted signals?
F31130: Zero mark and posi-
tion error from the coarse
synchronization
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
After initializing the pole position using
track C/D, Hall signals or pole position
identification routine, the zero mark was
detected outside the permissible range.
For distance-coded encoders, the test is
carried out after passing 2 zero marks.
Fine synchronization was not carried out.
•
Check that the encoder cables are routed
in compliance with EMC.
•
Check the plug connections
•
If the Hall sensor is used as an equivalent
for track C/D, check the connection.
•
Check the connection of track C or D.
•
Replace the encoder or encoder cable.
