Siemens SINAMICS G120 List Manual page 58

2 Parameters
2.2 List of parameters
r0238 Internal power unit resistance / PU R internal
Access level: 3
Can be changed: -
Unit group: -
Min
- [ohm]
Description: Displays the internal resistance of the power unit (IGBT and line resistance).
p0287[0...1] Ground fault monitoring thresholds / Gnd flt threshold
Access level: 3
Can be changed: T
Unit group: -
Min
0.0 [%]
Description: Sets the shutdown thresholds for the ground fault monitoring.
The setting is made as a percentage of the maximum current of the power unit (r0209).
Index: [0] = Threshold at which precharging starts
[1] = Threshold at which precharging stops
Dependency: Refer to: p1901
Refer to: F30021
Note: This parameter is only relevant for chassis power units.
r0289 CO: Maximum power unit output current / PU I_outp max
Access level: 3
Can be changed: -
Unit group: -
Min
- [Arms]
Description: Displays the actual maximum output current of the power unit taking into account derating factors.
p0290 Power unit overload response / PU overld response
Access level: 3
Can be changed: T
Unit group: -
Min
0
Description: Sets the response to a thermal overload condition of the power unit.
The following quantities can result in a response to thermal overload:
- heat sink temperature (r0037[0]).
- chip temperature (r0037[1]).
- power unit overload I2t (r0036).
Possible measures to avoid thermal overload:
- reduce the output current limit r0289 and r0067 (for closed-loop speed or torque control) or the output frequency (for
U/f control) indirectly via the output current limit and the intervention of the current limiting controller).
- reduce the pulse frequency.
A reduction, if parameterized, is always realized after an appropriate alarm is output.
Value: 0:
1:
2:
3:
12:
13:
58
Reduce output current or output frequency
No reduction shutdown when overload threshold is reached
Reduce I_output or f_output and f_pulse (not using I2t)
Reduce the pulse frequency (not using I2t)
I_output or f_output and automatic pulse frequency reduction
Automatic pulse frequency reduction
Calculated: -
Scaling: -
Unit selection: -
Max
- [ohm]
Calculated: -
Scaling: -
Unit selection: -
Max
100.0 [%]
Calculated: -
Scaling: p2002
Unit selection: -
Max
- [Arms]
Calculated: -
Scaling: -
Unit selection: -
Max
13
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
- [ohm]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
[0] 6.0 [%]
[1] 16.0 [%]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
- [Arms]
Data type: Integer16
Dyn. index: -
Func. diagram: 8021
Factory setting
2
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890