but he use a ERM180!

another Datasheet

The Fault F31101 mean that there is a problem with the Zero mark.

So the question:
Have the ERM180 a zeromark?

If not you should reconfigure the Encoder settings and set that the encoder is without Zero Mark.

Regards

Christoph

Hello,

I guess the errorcode is clear.  You get no Zero mark..

Please check the manual of the encoder and your settings and wiring.

When you are no successful, please contact the hotline.

Support Request :http://www.siemens.com/automation/support-request

F31101 (N, A) Encoder 1: Zero mark failed

Message value:%1

Message class:Actual position/speed value incorrect or not available (11)

Drive object:A_INF, B_INF, ENC, HLA, R_INF, S_INF, SERVO, SERVO_AC, SERVO_I_AC, TM41, VECTOR, VECTOR_AC,

VECTOR_I_AC

Component:Encoder 1Propagation:LOCAL

Reaction:Infeed: NONE (OFF1, OFF2)

Servo: ENCODER (IASC/DCBRK, NONE, OFF1, OFF2, OFF3, STOP2)

Vector: ENCODER (IASC/DCBRK, NONE, OFF1, OFF2, OFF3, STOP2)

Hla: ENCODER (NONE, OFF1, OFF2, OFF3, STOP2)

Acknowledge:PULSE INHIBIT

Cause:The 1.5 x parameterized zero mark distance was exceeded.

The zero mark distance for the zero mark monitoring is set in p0425 (rotary encoder) or p0424 (linear encoder).

Fault value (r0949, interpret decimal):

Number of increments after POWER ON or since the last zero mark that was detected (4 increments = 1 encoder

pulse).

See also: p0491 (Motor encoder fault response ENCODER)

Remedy:- check that the encoder cables are routed in compliance with EMC.

- check the plug connections.

- check the encoder type (encoder with equidistant zero marks).

- adapt the parameter for the clearance between zero marks (p0425).

- if message output above speed threshold, reduce filter time if necessary (p0438).

- when p0437.1 is active, check p4686.

- replace the encoder or encoder cable.