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Faults and Alarms
List of faults and alarms
A31410 (F, N)
Encoder 1: Serial communications
Drive object:
All objects
Reaction:
NONE
Acknowledge:
NONE
Cause:
Serial communication protocol transfer error between the encoder and evaluation module.
Alarm value (r2124, interpret binary):
Bit 0: Alarm bit in the position protocol.
Bit 1: Incorrect quiescent level on the data line.
Bit 2: Encoder does not respond (does not supply a start bit within 50 ms).
Bit 3: CRC error: The checksum in the protocol from the encoder does not match the data.
Bit 4: Encoder acknowledgement error: The encoder incorrectly understood the task (request) or cannot execute it.
Bit 5: Internal error in the serial driver: An illegal mode command was requested.
Bit 6: Timeout when cyclically reading.
Bit 8: Protocol is too long (e.g. > 64 bits).
Bit 9: Receive buffer overflow.
Bit 10: Frame error when reading twice.
Bit 11: Parity error.
Bit 12: Data line signal level error during the monoflop time.
Remedy:
- check that the encoder cables are routed in compliance with EMC.
- check the plug connections.
- replace the encoder.
Reaction upon F:
A_INFEED: NONE (OFF1, OFF2)
SERVO: NONE (ENCODER, IASC / DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
VECTOR: NONE (ENCODER, IASC / DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowl. upon F:
IMMEDIATELY
Reaction upon N:
NONE
Acknowl. upon N:
NONE
A31411 (F, N)
Encoder 1: EnDat encoder signals alarms
Drive object:
All objects
Reaction:
NONE
Acknowledge:
NONE
Cause:
The error word of the EnDat encoder has alarm bits that have been set.
Alarm value (r2124, interpret 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.
See also: p0491 (Motor encoder fault response ENCODER)
Remedy:
Replace encoder.
Reaction upon F:
A_INFEED: NONE (OFF1, OFF2)
SERVO: NONE (ENCODER, IASC / DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
VECTOR: NONE (ENCODER, IASC / DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowl. upon F:
IMMEDIATELY
Reaction upon N:
NONE
Acknowl. upon N:
NONE
A31414 (F, N)
Encoder 1: Amplitude error track C or D (C^2 + D^2)
Drive object:
All objects
Reaction:
NONE
Acknowledge:
NONE
Cause:
The amplitude (C^2 + D^2) of track C or D of the encoder or from the Hall signals, is not within the tolerance band-
width.
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.
3-1648
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
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