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Faults and Alarms
List of faults and alarms
Reaction upon F:
NONE (DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge
IMMEDIATELY
upon F:
Reaction upon N:
NONE
Acknowledge
NONE
upon N:
A33411 (F, N)
Encoder 3: EnDat encoder signals alarms
Reaction:
NONE
Acknowledge:
NONE
Cause:
The error word of the EnDat encoder has alarm bits that have been set.
Alarm value (r2124, binary):
Bit 0: Frequency exceeded (speed too high).
Bit 1: Temperature exceeded.
Bit 2: Control reserve, lighting system exceeded.
Bit 3: Battery discharged.
Bit 4: Reference point passed.
Remedy:
Replace encoder.
Reaction upon F:
NONE (DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge
IMMEDIATELY
upon F:
Reaction upon N:
NONE
Acknowledge
NONE
upon N:
A33414 (F, N)
Encoder 3: Amplitude error track C or D (C^2 + D^2)
Reaction:
NONE
Acknowledge:
NONE
Cause:
The amplitude (C^2 + D^2) of track C or D is not within the tolerance bandwidth.
The nominal signal must be in the range 375 mV to 600 mV (500 mV -25 % / +20 %).
On the other hand, the response thresholds are < 230 mV and > 750 mV (frequency characteristic).
This fault also occurs if the A/D converter is overcontrolled.
If the amplitude is not within the tolerance bandwidth, then it cannot be used to initialize the start position.
Alarm value (r2124, decimal):
Low word: Signal level of the C track (16 bits with sign).
High word: Signal level, track D (16 bits with sign).
A signal level of 500 mV corresponds to the numerical value 5333 hex = 21299 dec.
Remedy:
- check that the encoder cables are routed in compliance with EMC.
- check the plug connections.
- replace the encoder or encoder cable.
- check the encoder module (e.g. contacts).
- check the Hall sensor box
Reaction upon F:
NONE (DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge
IMMEDIATELY
upon F:
Reaction upon N:
NONE
Acknowledge
NONE
upon N:
N33415 (F, A)
Encoder 3: Amplitude alarm, track A or B (A^2 + B^2)
Reaction:
NONE
Acknowledge:
NONE
3-630
Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
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