Siemens G130 - F07417 Drive: Pulse technique not plausible (motor model); F07422 Drive: Reference model natural frequency > Shannon frequency

4 Faults and alarms
4.2 List of faults and alarms
SINAMICS G130/G150
1550 List Manual (LH2), 07/2016, A5E03263479A
F07417 Drive: Pulse technique not plausible (motor model)
Message value: %1
Message class: Application/technological function faulted (17)
Drive object: VECTOR_G
Component: None Propagation: GLOBAL
Reaction: OFF2 (NONE)
Acknowledge: IMMEDIATELY
Cause: The evaluation of the test pulse response indicated incorrect values.
Fault value (r0949, interpret decimal):
0:
An impermissible pulse technique configuration was detected during ramp-up.
Possible causes:
- the pulse technique was initially selected when the system powered up (p1750.5 = 1) but the power unit component
does not support the current oversampling required (see r0192.23). As a consequence, p1750.0 was de-selected
automatically.
10:
The pulse response is repeatedly implausible.
Possible causes:
- incorrect configuration of the power unit component
- the power unit component is faulty.
20:
For the specified pulse amplitude, the measured pulse response is much higher than the expected value.
Possible causes:
- Strong oscillations have occurred.
- the motor is short-circuited for high frequencies (output filter).
- the motor is damaged.
Remedy: For fault value = 0:
Once the pulse technique has been de-selected automatically (p1750.5 = 0), there are two possible options:
- acknowledge the fault and save parameter p1750.5 = 0 -> field-oriented control mode to standstill is not used and
replaced by transition to open-loop control at low speeds.
- upgrade the power unit firmware (at least V4.3) -> field-oriented control mode to standstill is available.
For fault value = 10:
With active selection of the pulse technique (p1750.5 = 1):
- POWER ON (switch-off/switch-on) the Control Unit and the power unit together again.
or
- carry out a manual warm restart (p0009 = 30, p0976 = 2, 3).
If this does not solve the problem: Replace the power unit component.
For fault value = 20:
- control parameters might have been adjusted (factory setting, commissioning).
- filters must not be connected between motor and converter/inverter.
- check the motor.
F07422 Drive: Reference model natural frequency > Shannon frequency
Message value: -
Message class: Error in the parameterization / configuration / commissioning procedure (18)
Drive object: VECTOR_G
Component: None Propagation: GLOBAL
Reaction: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY (POWER ON)
Cause: The natural filter frequency of the PT2 element for the reference model (p1433) is greater than the Shannon
frequency.
The Shannon frequency is calculated according to the following formula: 0.5 / p0115[1]
Remedy: - reduce the natural frequency of PT2 element for reference model (p1433).
- reduce the speed controller sampling time (p0115[1]).