Siemens Sinumerik 840D sl Diagnostic Manual page 720

Overview of Alarms
SINAMICS-Alarms
Remedy: None necessary. The alarm automatically disappears when the limit value is undershot.
See also: p0290 (Power unit overload response)
205050 <location>Parallel circuit: Pulse enable in spite of pulse inhibit
Message %1
value:
Drive object: A_INF, B_INF, S_INF, VECTOR
Reaction: A_INFEED: OFF2 (NONE, OFF1)
VECTOR: OFF2 (NONE, OFF1, OFF3, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: A power unit signals that the pulses are enabled although the pulses are inhibited.
Fault value (r0949, interpret decimal):
Number of the power unit involved.
Remedy: The power unit is defective and must be replaced.
205051 <location>Parallel circuit: Power unit pulse enable missing
Message %1
value:
Drive object: A_INF, B_INF, S_INF, VECTOR
Reaction: A_INFEED: OFF2 (NONE, OFF1)
VECTOR: OFF2 (NONE, OFF1, OFF3, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: For one or several power units, the pulses were not able to be enabled.
Fault value (r0949, interpret decimal):
Number of the power unit involved.
Remedy: - acknowledge power unit faults that are still present.
- inhibit the pulses of the power unit involved (p7001).
205052 <location>Parallel circuit: Illegal current dissymmetry
Message %1
value:
Drive object: A_INF, B_INF, S_INF, VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: The deviation of the individual currents of the power units exceeds the alarm threshold specified in
p7010.
Alarm value (r2124, interpret decimal):
1: Phase U.
2: Phase V.
3: Phase W.
Remedy: - inhibit the pulses of the faulted power unit (p7001).
- check the connecting cables. Loose contacts can cause current spikes.
- the motor reactors are non-symmetrical or faulty and must be replaced.
- the CTs must be calibrated or replaced.
205053 <location>Parallel circuit: Inadmissible DC link voltage dissymmetry
Message -
value:
Drive object: A_INF, B_INF, S_INF, VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: The deviation of the DC link voltage measured values exceeds the alarm threshold specified in p7011.
Remedy: - inhibit the pulses of the faulted power unit (p7001).
- check the DC link connecting cables.
- the DC link voltage measurement is incorrect and must be calibrated or renewed.
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SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG 2009 All Rights Reserved
03/2009