Siemens SINUMERIK 840D sl Series Diagnostics Manual page 754

Overview of Alarms
232111 <location>Encoder 2: Absolute value encoder EnDat, internal fault/error
Reaction: A_INFEED: NONE
SERVO: ENCODER (DCBRAKE, NONE)
Acknowledge: READY
Cause: The EnDat encoder fault word contains fault bits that have been set.
Fault value (r0949, binary):
Bit 0: Lighting system failed.
Bit 1: Signal amplitude too low.
Bit 2: Position value incorrect.
Bit 3: Encoder power supply overvoltage condition.
Bit 4: Encoder power supply undervoltage condition.
Bit 5: Encoder power supply overcurrent condition.
Bit 6: The battery must be changed.
Remedy: Re fault value, bit 0 = 1:
Encoder is defective. Replace the encoder, where the motor encoder has a direct DRIVE-
CLiQ socket: Replace the motor.
Re fault value, bit 1 = 1:
Encoder is defective. Replace the encoder, where the motor encoder has a direct DRIVE-
CLiQ socket: Replace the motor.
Re fault value, bit 2 = 1:
Encoder is defective. Replace the encoder, where the motor encoder has a direct DRIVE-
CLiQ socket: Replace the motor.
Re fault value, bit 3 = 1:
5 V power supply voltage fault.
When using an SMC. Check the plug-in cable between the encoder and SMC or replace
the SMC.
When a motor encoder with a direct DRIVE-CLiQ connection is used: Replace the motor.
Re fault value, bit 4 = 1:
5 V power supply voltage fault.
When using an SMC. Check the plug-in cable between the encoder and SMC or replace
the SMC.
When using a motor with DRIVE-CLiQ: Replace the motor.
Re fault value, bit 5 = 1:
Encoder is defective. Replace the encoder, where the motor encoder has a direct DRIVE-
CLiQ socket: Replace the motor.
Re fault value, bit 6 = 1:
The battery must be changed - only for encoders with battery back-up.
232115 <location>Encoder 2: Amplitude error track A or B (A^2 + B^2)
Reaction: A_INFEED: NONE
SERVO: ENCODER (DCBRAKE, NONE)
Acknowledge: READY
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005