Siemens SINAMICS G150 Manual page 1538

4 Faults and alarms
4.2 List of faults and alarms
Re fault cause = 5:
- use a booksize format power unit.
- for a Double Motor Module operate the two drive controls with the same current controller sampling time (p0115[0]).
Otherwise, the higher current controller dynamics can only be activated on the drive with the longer sampling time.
- If required, de-select the higher current controller dynamic performance (p1810.11 = 0). After deselecting the
computing dead time, recalculate the controller gains (p0340 = 4). If required, optimize the speed controller.
See also: p0115, p1231, p1810
F30021 Power unit: Ground fault
Message value: %1
Message class: Ground fault / inter-phase short-circuit detected (7)
Drive object: B_INF, VECTOR_G
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The Power unit has detected a ground fault.
Possible causes:
- ground fault in the power cables.
- Ground fault at the motor.
- CT defective.
- when the brake closes, this causes the hardware DC current monitoring to respond.
- short-circuit at the braking resistor.
- the closed-loop circulating current control for devices connected in parallel (r0108.15 = 1) is either too slow or has
been set too fast.
Note:
For power units, a ground fault is also emulated in r3113.5.
Fault value (r0949, interpret decimal):
0:
- the hardware DC current monitoring has responded.
- short-circuit at the braking resistor.
> 0:
Absolute value, total current amplitude [20479 = r0209 * 1.4142].
Remedy: - check the power cable connections.
- check the motor.
- check the CT.
- check the cables and contacts of the brake connection (a wire is possibly broken).
- check the braking resistor.
For parallel switching devices (r0108.15 = 1) the following additionally applies:
- check the ground fault monitoring thresholds (p0287).
- check the setting of the closed-loop circulating current control (p7036, p7037).
See also: p0287 (Ground fault monitoring thresholds)
F30022 Power unit: Monitoring U_ce
Message value: Fault cause: %1 bin
Message class: Ground fault / inter-phase short-circuit detected (7)
Drive object: B_INF, VECTOR_G
Reaction: OFF2
Acknowledge: POWER ON
Cause: In the power unit, the monitoring of the collector-emitter voltage (U_ce) of the semiconductor has responded.
Possible causes:
- fiber-optic cable interrupted.
- power supply of the IGBT gating module missing.
- short-circuit at the power unit output.
- defective semiconductor in the power unit.
1538
SINAMICS G130/G150
List Manual (LH2), 04/2014, A5E03263479A