List of faults and alarms
Faults and Alarms
3-1541
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
F07423 Drive: APC filter natural frequency > Shannon frequency
Drive object: SERVO
Reaction: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY (POWER ON)
Cause: One of the filter natural frequencies is greater than the Shannon frequency.
The Shannon frequency is calculated according to the following formula: 0.5 / (p0115[1] * x)
Fault value (r0949, interpret hexadecimal):
Bit 0: Filter 1.1 (p3711, p3713), x = 1
Bit 4: Filter 2.1 (p3721, p3723), x = p3706
Bit 5: Filter 2.2 (p3726, p3728), x = p3706
Bit 8: Filter 3.1 (p3731, p3733), x = p3707
Bit 9: Filter 3.2 (p3736, p3738), x = p3707
Bit 16 ... 32: Data set number (starting from zero)
Remedy: - reduce the numerator or denominator natural frequency of the filter involved.
- reduce the speed controller sampling time (p0115[1]) or the sub-sampling (p3706, p3707).
- switch-out the filter involved (p3704).
A07424 Drive: Operating condition for APC not valid
Drive object: SERVO
Reaction: NONE
Acknowledge: NONE
Cause: The APC function (Advanced Positioning Control) has identified an invalid operating condition.
Alarm value (r2124, interpret hexadecimal):
Bit 0 = 1:
APC is operating without encoder (sensorless).
Bit 1 = 1:
The load measuring system for APC, selected using p3701, has a fault. The APC function is disabled.
Bit 2 = 1:
The load measuring system for APC, selected using p3701, has a fault. The pulse de-coupling is disabled, i.e. the
speed of the motor measuring system is used as speed for the closed-loop motor speed control.
Remedy: Re bit 0:
Only use the APC function in operation with an encoder.
Re Bit 1, 2:
Check the load measuring system.
F07429 Drive: DSC without encoder not possible
Drive object: SERVO
Reaction: OFF2
Acknowledge: IMMEDIATELY (POWER ON)
Cause: The function DSC (Dynamic Servo Control) was activated although there is no encoder.
See also: p1191 (DSC position controller gain KPC)
Remedy: If there is no encoder and CI: p1191 (DSC position controller gain) is interconnected, then connector input CI: p1191
must have a 0 signal.
F07430 Drive: Changeover to open-loop torque controlled operation not possible
Drive object: SERVO
Reaction: OFF2 (NONE, OFF1, OFF3)
Acknowledge: IMMEDIATELY
Cause: For sensorless operation, the converter cannot change over to closed-loop torque-controlled operation (BI: p1501).
Remedy: Do not attempt to cover over to closed-loop torque-controlled operation.
F07431 Drive: Changeover to sensorless operation not possible
Drive object: SERVO
Reaction: OFF2 (OFF1)
Acknowledge: IMMEDIATELY
Cause: For closed-loop torque control, the converter cannot change over to sensorless operation (p1404).
Remedy: Do not attempt to change over to sensorless operation.
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