Siemens SINUMERIK 840D sl Series Diagnostics Manual page 779

08/2005
Cause: A alarm has occurred on the sensor module for encoder 3 that cannot be interpreted by the
control unit firmware.
This can occur if the firmware on the sensor module for encoder 3 is more recent than the
firmware on the control unit.
Alarm value (r2124, decimal):
Alarm number.
If required, the significance of this new alarm can be read about in a more recent
description of the control unit.
Remedy: - replace the firmware on the sensor module by an older firmware version (r0148).
- upgrade the firmware on the control unit (r0018).
234207 <location>VSM: Temperature fault threshold exceeded
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE
Acknowledge: IMMEDIATELY (POWER ON)
Cause: The temperature (r3666) measured using the voltage sensing module (VSM) has
exceeded the threshold value (p3668).
This fault can only be initiated if the temperature evaluation was activated (p3665 = 2 for a
KTY sensor or p3665 = 1 for a PTC sensor).
Fault value (r0949, decimal):
The hundred thousands and ten thousands position specifies the component number of
the VSM where the fault occurred.
Remedy: - check the fan.
- reduce the power.
234211 <location>VSM: Temperature alarm threshold exceeded
Reaction: NONE
Acknowledge: NONE
Cause: The temperature (r3666) measured using the voltage sensing module (VSM) has
exceeded the threshold value (p3667).
Alarm value (r2124, decimal):
The hundred thousands and ten thousands position specifies the component number of
the VSM where the fault occurred.
Remedy: - check the fan.
- reduce the power.
234801 <location>VSM DRIVE-CLiQ: Sign-of-life missing
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: A DRIVE-CLiQ communications error has occurred between the control unit and the
voltage sensing module.
Fault value (r0949, hexadecimal):
0A: The sign-of-life bit in the receive telegram is not set.
Remedy: - check the DRIVE-CLiQ connection.
- replace the terminal module.
234802 <location>VSM: Time slice overflow
Reaction: A_INFEED: OFF2 (NONE, OFF1)
SERVO: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: Time slice overflow on the voltage sensing module.
Remedy: Replace the voltage sensing module.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
2-779