Siemens SINUMERIK 840D sl Series Diagnostics Manual page 785

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08/2005
234899
<location>VSM: Unknown fault
Reaction:
A_INFEED: NONE (OFF1, OFF2)
SERVO: NONE (OFF1, OFF2, OFF3)
Acknowledge:
IMMEDIATELY (POWER ON)
Cause:
A fault occurred on the voltage sensing module that cannot be interpreted by the control
unit firmware. This can occur if the firmware on the voltage sensing module is more recent
than the firmware on the control unit.
Fault value (r0949, decimal):
Fault number.
If required, the significance of this new fault can be read about in a more recent description
of the control unit.
Remedy:
- replace the firmware on the voltage sensing module by an older firmware version (r0xyz).
- upgrade the firmware on the control unit (r0018).
234903
<location>VSM: Error I2C bus
Reaction:
NONE
Acknowledge:
NONE
Cause:
An error has occurred in while accessing via the internal TM I2C bus.
Remedy:
Replace the terminal module.
234904
<location>VSM: EEPROM
Reaction:
NONE
Acknowledge:
NONE
Cause:
An error has occurred accessing the non-volatile memory on the terminal module.
Remedy:
Replace the terminal module.
234905
<location>VSM: Parameter access
Reaction:
NONE
Acknowledge:
NONE
Cause:
The control unit attempted to write an illegal parameter value into the voltage sensing
module (VSM).
Remedy:
- check whether the firmware version of the VSM (r0158) matches the firmware version of
control unit (r0018).
- if required, replace the voltage sensing module.
Note:
The firmware versions that match each other are in the readme.txt file on the
CompactFlash Card.
234920
<location>VSM: Temperature sensor fault
Reaction:
NONE
Acknowledge:
NONE
Cause:
When evaluating the temperature sensor, an error occurred.
Alarm value (r2124, decimal):
1: Wire breakage or sensor not connected (KTY: R > 1630 Ohm).
2: Measured resistance too low (PTC: R < 20 Ohm, KTY: R < 50 Ohm).
Remedy:
- check that the sensor is connected correctly.
- replace sensor.
234999
<location>VSM: Unknown alarm
Reaction:
NONE
Acknowledge:
NONE
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
2-785

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