Siemens Sinumerik 840D sl Diagnostic Manual page 837

03/2009
230041 <location>Power unit: Undervoltage 24 V alarm
Message %1
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: 24 V power supply fault for the power unit.
- the 16 V threshold was undershot..
Fault value (r0949, interpret decimal):
24 V voltage [1 bit = 0.1 V].
Remedy: Check the 24 V DC voltage supply to power unit.
230042 <location>Power unit: Fan operating time reached or exceeded
Message %1
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: The maximum operating time of the fan in the power unit is set in p0252.
This message indicates the following:
Fault value (r0949, interpret decimal):
0: The maximum fan operating time is 500 hours.
1: The maximum fan operating time has been exceeded.
Remedy: Replace the fan in the power unit and reset the operating hours counter to 0 (p0251 = 0).
See also: p0251 (Operating hours counter power unit fan), p0252 (Maximum operating time power
unit fan)
230043 <location>Power unit: Overvolt 24 V
Message -
value:
Drive object: All objects
Reaction: OFF2
Acknowledge: POWER ON
Cause: The following applies for CU31x:
Overvoltage of the 24 V power supply for the power unit.
- the 31.5 V threshold was exceeded for more than 3 ms.
Fault value (r0949):
24 V voltage [1 bit = 0.1 V].
Remedy: Check the 24 V DC voltage supply to power unit.
230044 <location>Power unit: Overvoltage 24 V alarm
Message -
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: The following applies for CU31x:
24 V power supply fault for the power unit.
- the 32.0 V threshold was exceeded.
Fault value (r0949):
24 V voltage [1 bit = 0.1 V].
Remedy: Check the 24 V DC voltage supply to power unit.
230045 <location>Power unit: Supply undervoltage
Message %1
value:
Drive object: All objects
Reaction: OFF2
Acknowledge: IMMEDIATELY (POWER ON)
© Siemens AG 2009 All Rights Reserved
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
Overview of Alarms
SINAMICS-Alarms
2-837