Siemens SINAMICS S Series - F31502 (N, A) Encoder 1: Encoder with measuring gearbox, without valid signals; F31503 (N, A) Encoder 1: Position tracking cannot be reset; N31800 (F) Encoder 1: Group signal; F31801 (N, A) Encoder 1 DRIVE-CLiQ: Sign-of-life missing

List of faults and alarms
Faults and Alarms
3-1653
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
F31502 (N, A) Encoder 1: Encoder with measuring gearbox, without valid signals
Drive object: SERVO, VECTOR
Reaction: OFF1 (OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: The encoder with measuring gearbox no longer provides any valid signals.
Remedy: It must be ensured that all of the encoders, with mounted measuring gearbox, provide valid actual values in opera-
tion.
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
F31503 (N, A) Encoder 1: Position tracking cannot be reset
Drive object: SERVO, VECTOR
Reaction: OFF1 (NONE, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: The position tracking for the measuring gearbox cannot be reset.
Remedy: The fault should be resolved as follows:
- select encoder commissioning (p0010 = 4).
- reset the position tracking as follows (p0411.2 = 1).
- de-select encoder commissioning (p0010 = 0).
The fault should then be acknowledged and the absolute encoder adjusted.
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
N31800 (F) Encoder 1: Group signal
Drive object: All objects
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (IASC / DCBRAKE, NONE)
VECTOR: ENCODER (IASC / DCBRAKE, NONE)
Acknowledge: NONE
Cause: The motor encoder has detected at least one fault.
See also: p0491 (Motor encoder fault response ENCODER)
Remedy: Evaluates other actual messages.
Reaction upon F: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (IASC / DCBRAKE, NONE)
VECTOR: ENCODER (IASC / DCBRAKE, NONE)
Acknowl. upon F: IMMEDIATELY
F31801 (N, A) Encoder 1 DRIVE-CLiQ: Sign-of-life missing
Drive object: All objects
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (IASC / DCBRAKE, NONE)
VECTOR: ENCODER (IASC / DCBRAKE, NONE)
Acknowledge: IMMEDIATELY
Cause: DRIVE-CLiQ communications error between the Control Unit and the encoder involved.
Fault value (r0949, interpret hexadecimal):
0A: The sign-of-life bit in the receive telegram is not set.
See also: p0491 (Motor encoder fault response ENCODER)