Siemens SINUMERIK 840D sl Series Diagnostics Manual page 780

Overview of Alarms
234803 <location>VSM: Memory test
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: An error has occurred during the RAM test on the voltage sensing module.
Remedy: - check whether the permissible ambient temperature for the voltage sensing module is
being maintained.
- replace the voltage sensing module.
234804 <location>VSM: CRC
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: A checksum error has occurred when reading-out the program memory on the voltage
sensing module (VSM).
Remedy: - check whether the permissible ambient temperature for the voltage sensing module is
being maintained.
- replace the voltage sensing module.
234805 <location>VSM: Incorrect EPROM checksum
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: Internal parameter data is corrupted.
Fault value (r0949, hexadecimal):
01: EEPROM access error.
02: Too many blocks in the EEPROM.
Remedy: - check whether the permissible ambient temperature for the module is maintained.
- replace the module.
234806 <location>VSM: Initialization
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: For the voltage sensing module (VSM), a fault has occurred while initializing.
Remedy: Replace the voltage sensing module.
234807 <location>VSM: Sequence control, time monitoring
Reaction: NONE
Acknowledge: NONE
Cause: Error, timeout in the sequence control on the voltage sensing module (VSM).
Remedy: Replace the voltage sensing module.
234820 <location>VSM DRIVE-CLiQ: Telegram error
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE (OFF1, OFF2)
Acknowledge: IMMEDIATELY
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005