Siemens SINAMICS S Series - F31802 (N, A) Encoder 1: Time slice overflow; F31804 (N, A) Encoder 1: Checksum error; F31805 (N, A) Encoder 1: EPROM checksum error

Faults and Alarms
List of faults and alarms
3-1654
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
Remedy: - check the electrical cabinet design and cable routing for EMC compliance
- replace the component involved.
See also: p9916 (DRIVE-CLiQ data transfer error shutdown threshold slave)
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
F31802 (N, A) Encoder 1: Time slice overflow
Drive object: All objects
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (IASC / DCBRAKE, NONE)
VECTOR: ENCODER (IASC / DCBRAKE, NONE)
Acknowledge: IMMEDIATELY
Cause: Time slice overflow, encoder 1.
Fault value (r0949, interpret decimal):
9: Time slice overflow of the fast (current controller clock cycle) time slice.
10: Time slice overflow of the average time slice.
12: Time slice overflow of the slow time slice.
999: Timeout when waiting for SYNO, e.g. unexpected return to non-cyclic operation.
See also: p0491 (Motor encoder fault response ENCODER)
Remedy: Reduce the current controller frequency.
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
F31804 (N, A) Encoder 1: Checksum error
Drive object: All objects
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (IASC / DCBRAKE, NONE)
VECTOR: ENCODER (IASC / DCBRAKE, NONE)
Acknowledge: IMMEDIATELY
Cause: A checksum error has occurred when reading-out the program memory on the Sensor Module.
Fault value (r0949, interpret hexadecimal):
yyyyxxxx hex
yyyy: Memory area involved.
xxxx: Difference between the checksum at POWER ON and the actual checksum.
See also: p0491 (Motor encoder fault response ENCODER)
Remedy: - check whether the permissible ambient temperature for the component is maintained.
- replace the Sensor Module.
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
F31805 (N, A) Encoder 1: EPROM checksum error
Drive object: All objects
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (IASC / DCBRAKE, NONE)
VECTOR: ENCODER (IASC / DCBRAKE, NONE)
Acknowledge: IMMEDIATELY
Cause: Internal parameter data is corrupted.
Fault value (r0949, interpret hexadecimal):
01: EEPROM access error.
02: Too many blocks in the EEPROM.
See also: p0491 (Motor encoder fault response ENCODER)