Faults and Alarms
List of faults and alarms
3-606
Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
Reaction upon N:
NONE
Acknowledge
upon N:
NONE
A31414 (F, N)
Encoder 1: 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, ENCODER, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge
upon F:
IMMEDIATELY
Reaction upon N:
NONE
Acknowledge
upon N:
NONE
N31415 (F, A)
Encoder 1: Amplitude alarm, track A or B (A^2 + B^2)
Reaction:
NONE
Acknowledge:
NONE
Cause:
The amplitude (A^2 + B^2) of track A or B is not within the tolerance bandwidth.
SMC20:
The nominal signal level is at 500 mV (500 mV -25 % / +20 %). The response threshold is < 300 mV.
SMC10:
The nominal signal level is at 2900 mV (2.0 Vrms). The response threshold is < 1414 mV (1.0 Vrms).
Alarm value (r2124, decimal):
Low word:
Amplitude square root(A*A + B*B).
SMC20:
A signal level of 500 mV peak value corresponds to the numerical value 299A hex = 10650 dec.
SMC10:
A signal level of 2900 mV peak value corresponds to the numerical value 3333 hex = 13107 dec.
High word:
Angle 0 to 65535 corresponds to 0 to 360 degrees of the fine position. Zero degrees is at the negative zero crossover
of track B.
Remedy:
- check the speed range, frequency characteristic (amplitude characteristic) of the measuring equipment is not suf-
ficient for the speed range.
- 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).
- dirty code disk
- aged lighting system.
Reaction upon F:
NONE (DCBRAKE, ENCODER, OFF1, OFF2, OFF3, STOP1, STOP2)
Acknowledge
upon F:
IMMEDIATELY
Reaction upon A:
NONE
Acknowledge
upon A:
NONE
