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A31418 (F, N)
Encoder 1: Half the speed difference per sampling rate exceeded (p0492/2)
Reaction:
NONE
Acknowledge:
NONE
Cause:
The speed difference between two sampling cycles has exceeded half the value of parameter p0492.
The error is only evaluated for HTL/TTL encoders.
Alarm value (r2124, decimal):
Speed difference per current controller clock cycle in increments.
Remedy:
Check the tachometer feeder cable for interruptions.
Check the grounding of the tachometer shielding.
If required, increase the setting of p0492.
Reaction upon F:
NONE (DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge
IMMEDIATELY
upon F:
Reaction upon N:
NONE
Acknowledge
NONE
upon N:
A31419 (F, N)
Encoder 1: Track A or B outside the tolerance range
Reaction:
NONE
Acknowledge:
NONE
Cause:
The amplitude, phase or offset correction for track A or B is at the limit.
Amplitude error correction: Amplitude B / Amplitude A = 0.78 ... 1.27
Phase: <84 degrees or >96 degrees
SMC20: Offset correction: +/-140 mV
SMC10: Offset correction: +/-650 mV
Alarm value (r2124, hexadecimal):
xxx1: Minimum of the offset correction, track B
xxx2: Maximum of the offset correction, track B
xx1x: Minimum of the offset correction, track A
xx2x: Maximum of the offset correction, track A
x1xx: Minimum of the amplitude correction, track B/A
x2xx: Maximum of the amplitude correction, track B/A
1xxx: Minimum of the phase error correction
2xxx: Maximum of the phase error correction
Remedy:
- check mechanical mounting tolerances for encoders without their own bearings (e.g. toothed-wheel encoders).
- check the plug connections (also the transition resistance).
- check the encoder signals.
- replace the encoder or encoder cable.
Reaction upon F:
NONE (DCBRAKE, ENCODER, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge
IMMEDIATELY
upon F:
Reaction upon N:
NONE
Acknowledge
NONE
upon N:
A31429 (F, N)
Encoder 1: Position difference, track C/D and A/B too large
Reaction:
NONE
Acknowledge:
NONE
Cause:
The error of track C/D is greater than +/-15 ° mechanical or +/-60 ° electrical.
One period of track C/D corresponds to 360 ° mechanical.
One period of the Hall signal corresponds to 360 ° electrical.
The monitoring responds if, for example, Hall sensors are connected as C/D equivalent with the incorrect rotational
sense or supply values that are not accurate enough.
Alarm value (r2124, decimal):
Measured deviation as mechanical angle (16 bits with sign, 182 dec corresponds to 1 °).
Remedy:
- track C or D not connected.
- correct the sense of rotation of a Hall sensor that may be connected as equivalent C/D track.
- check that the encoder cables are routed in compliance with EMC.
- check the adjustment of the Hall sensor.
Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
Faults and Alarms
List of faults and alarms
3-607
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