Faults and Alarms
List of faults and alarms
3-1514
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
Remedy: See also: r0037 (Control Unit temperature), p0290 (Power unit overload response)
Reaction upon N: NONE
Acknowl. upon N: NONE
N05007 (A) Power unit: Overtemperature thermal model alarm
Drive object: A_INF, SERVO, S_INF, VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: The temperature difference between the heatsink and chip has exceeded the permissible limit value.
- the permissible load duty cycle was not maintained.
- insufficient cooling, fan failure.
- overload
- ambient temperature too high.
- pulse frequency too high.
See also: r0037 (Control Unit temperature)
Remedy: - adapt the load duty cycle.
- check whether the fan is running.
- check the fan elements
- check whether the ambient temperature is in the permissible range.
- check the motor load.
- reduce the pulse frequency if this is higher than the rated pulse frequency.
Reaction upon A: NONE
Acknowl. upon A: NONE
F05050 Parallel circuit: Pulse enable in spite of pulse inhibit
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.
F05051 Parallel circuit: Power unit pulse enable missing
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).
A05052 (F) Parallel circuit: Illegal current dissymmetry
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.
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