Siemens SINUMERIK 840D sl Series Diagnostics Manual page 747

08/2005
231802 <location>Encoder 1: Time slice overflow
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (DCBRAKE, NONE)
Acknowledge: IMMEDIATELY
Cause: Time slice overflow, encoder 1.
Fault value (r0949, 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.
Remedy: Reduce the current controller frequency.
231804 <location>Encoder 1: CRC CODE RAM
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (DCBRAKE, NONE)
Acknowledge: IMMEDIATELY
Cause: The checksum via the CODE-RAM of the sensor module has changed in operation.
Fault value (r0949, hexadecimal):
Difference between the checksum at POWER ON and the actual checksum.
Remedy: Hardware defect: Replace the sensor module.
Firmware error: If required, upgrade the firmware.
231805 <location>Encoder 1: Incorrect EPROM checksum
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (DCBRAKE, NONE)
Acknowledge: IMMEDIATELY
Cause: Internal parameter data is corrupted.
Fault value (r0949, hexadecimal):
01: EEPROM access error.
02: Too many blocks in the EEPROM.
Remedy: Replace the module.
231806 <location>Encoder 1: Initialization unsuccessful
Reaction: A_INFEED: OFF2 (NONE)
SERVO: ENCODER (DCBRAKE, NONE)
Acknowledge: READY
Cause: The encoder was not successfully initialized.
Fault value (r0949, hexadecimal):
1, 2, 3: Encode initialization with the motor rotating.
Remedy: Acknowledge the fault.
231811 <location>Encoder 1: Encoder serial number changed
Reaction: A_INFEED: OFF2 (NONE)
SERVO: NONE (ENCODER, OFF2)
Acknowledge: IMMEDIATELY
Cause: The serial number of the motor encoder (e.g. EnDat encoder) of a synchronous motor has
changed.
Cause 1:
The motor with integrated and adjusted encoder was replaced.
Cause 2:
The encoder was replaced.
Cause 3:
A third-party, build-in or linear motor was re-commissioned.
Cause 4:
The firmware was updated to a version that checks the encoder serial number.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
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