Siemens SINAMICS G List Manual page 616

Faults and Alarms
List of faults and alarms
F32117 Encoder 2: Inversion error, signals A and B
Reaction: NONE (DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: For a square-wave signal encoder (TTL. bipolar. double ended) the A* and B* signals are not inverted with respect
to signals A and B.
Remedy: Check the setting of p0405: p0405.2 = 1 is only possible if the encoder is connected at X520.
Check the encoder/cable: Does the encoder supply TTL signals and the associated inverted signals?
F32118 Encoder 2: Speed difference outside the tolerance range
Reaction: NONE (DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: The speed difference between two sampling cycles has exceeded the value in p0492.
The error is only evaluated for HTL/TTL encoders.
Fault value (r0949, 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 maximum speed difference per sampling cycle (p0492).
F32120 Encoder 2: Power supply volt.
Reaction: NONE (DCBRAKE, ENCODER, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: Encoder power supply voltage fault.
Note:
If the encoder cables 6FX2002-2EQ00-.... and 6FX2002-2CH00-.... are interchanged, this can result in the encoder
being destroyed because the pins of the operating voltage are reversed.
Fault value (r0949, binary):
Bit 0: Undervoltage condition on the sense line (threshold 4.75 V).
Bit 1: Encoder power supply voltage overcurrent condition (threshold 450 mA).
Remedy: For fault value, bit 0 = 1:
- correct encoder cable connected?
- check the plug connections of the encoder cable.
- SMC30: Check the parameterization (p0404.22).
For fault value, bit 1 = 1:
- correct encoder cable connected?
- replace the encoder or encoder cable.
F32130 Encoder 2: Zero mark does not match position of C/D track
Reaction: NONE (DCBRAKE, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: After initializing the rotor position using the C/D track or using Hall signals, the zero mark was detected outside the
permissible range. This zero mark is rejected.
The deviation may be up to 18 ° mechanical or up to 60 ° electrical.
Fault value (r0949, decimal):
Normalization: 32768 = 180 °
High word:
Mechanical zero mark position determined.
If the initialization via a C/D track is selected in p0404, then it is checked whether the zero mark occurs in an angular
range of +/-18 ° mechanical.
Low word:
Deviation of the zero mark from the expected position as electrical angle.
If the correction of the commutation position with the zero mark is selected in p0404, then a difference of a maximum
of +/- 60 ° electrical is permitted.
Remedy: - check that the encoder cables are routed in compliance with EMC.
- check the plug connections.
- if the Hall sensor is used as equivalent C/D track, check the connection.
- check the C or D track connection.
- replace the encoder or encoder cable.
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 Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004