Co: Maximum Power Unit Output Current / Pu I_Outp Max; Power Unit Overload Response / Pu Overld Response - Siemens SINAMICS G150 Manual

2 Parameters
2.2 List of parameters
r0289

CO: Maximum power unit output current / PU I_outp max

VECTOR_G Can be changed: -
Data type: FloatingPoint32
P-Group: Displays, signals
Not for motor type: -
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

VECTOR_G Can be changed: T
Data type: Integer16
P-Group: Converter
Not for motor type: -
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/velocity or torque/force 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 (only for vector control).
A reduction, if parameterized, is always realized after an appropriate alarm is output.
Value: 0:
1:
2:
3:
12:
13:
Dependency: If a sine-wave filter is parameterized as output filter (p0230 = 3, 4), then only responses can be selected without
pulse frequency reduction (p0290 = 0, 1).
For a thermal power unit overload, an appropriate alarm or fault is output, and r2135.15 or r2135.13 set.
p0290 = 12, 13 are applicable only for blocksize power units.
Refer to: r0036, r0037, p0108, r0108, p0230, r2135
Notice: If the thermal overload of the power unit is not sufficiently reduced by the actions taken, the drive is always shut
down. This means that the power unit is always protected irrespective of the setting of this parameter.
Note: The setting p0290 = 0, 2 is only practical if the load decreases with decreasing speed (e.g. for applications with
variable torque such as for pumps and fans).
Under overload conditions, the current and torque limit are reduced, and therefore the motor is braked and forbidden
speed ranges (e.g. minimum speed p1080 and suppression [skip] speeds p1091 ... p1094) can be passed through.
For p0290 = 2, 3, 12, 13, the I2t overload detection of the power unit does not influence the response "Reduce pulse
frequency".
When the motor data identification routine is selected, p0290 cannot be changed.
116
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: -
Dyn. index: -
Units group: -
Scaling: p2002
Max
- [Arms]
Calculated: -
Dyn. index: -
Units group: -
Scaling: -
Max
13
List Manual (LH2), 04/2014, A5E03263479A
Access level: 3
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
- [Arms]
Access level: 3
Func. diagram: 8014
Unit selection: -
Expert list: 1
Factory setting
0
SINAMICS G130/G150