Siemens SINAMICS G120 List Manual page 74

2 Parameters
2.2 List of parameters
Note: The parameter is calculated using p0340 = 1, 3.
For induction motors, the result depends on the rotor time constant (r0384).
if this time is shortened too much, then this can result in an inadequate de-magnetizing of the induction motor and in
an overcurrent condition when the pulses are subsequently enabled (only when the flying restart function is activated
and the motor is rotating).
p0350[0...n] Motor stator resistance cold / Mot R_stator cold
Access level: 3
Can be changed: C(3), U, T
Unit group: -
Min
0.00000 [ohm]
Description: Sets the stator resistance of the motor at ambient temperature p0625 (phase value).
Dependency: Refer to: p0625, r1912
Notice: When selecting a catalog motor (p0301), this parameter is automatically pre-assigned and is write protected.
Information in p0300 should be carefully observed when removing write protection.
Note: The motor identification routine determines the stator resistance from the total stator resistance minus the cable
resistance (p0352).
p0352[0...n] Cable resistance / R_cable
Access level: 3
Can be changed: C(3), U, T
Unit group: -
Min
0.00000 [ohm]
Description: Resistance of the power cable between the power unit and motor.
Caution: The cable resistance should be entered prior to motor data identification. If it is used subsequently, the difference by
which p0352 was changed must be subtracted from the stator resistance p0350 or motor data identification must be
repeated.
Note: The parameter influences the temperature adaptation of the stator resistance.
The motor identification sets the cable resistance to 20% of the measured total resistance if p0352 is zero at the time
that the measurement is made. If p0352 is not zero, then the value is subtracted from the measured total stator
resistance to calculate stator resistance p0350. In this case, p0350 is a minimum of 10% of the measured value.
The cable resistance is reset when quick commissioning is exited with p3900 > 0.
p0354[0...n] Motor rotor resistance cold / Mot R_r cold
Access level: 3
Can be changed: C(3), U, T
Unit group: -
Min
0.00000 [ohm]
Description: Sets the rotor/secondary section resistance of the motor at the ambient temperature p0625.
This parameter value is automatically calculated using the motor model (p0340 = 1, 2) or using the motor data
identification routine (p1910).
Dependency: Refer to: p0625
Notice: When selecting a catalog motor (p0301), this parameter is automatically pre-assigned and is write protected.
Information in p0300 should be carefully observed when removing write protection.
Note: The parameter is not used for synchronous motors (p0300 = 2).
74
Calculated: p0340 = 1,2
Scaling: -
Unit selection: -
Max
2000.00000 [ohm]
Calculated: -
Scaling: -
Unit selection: -
Max
120.00000 [ohm]
Calculated: p0340 = 1,2
Scaling: -
Unit selection: -
Max
300.00000 [ohm]
SINAMICS G120 Control Units CU240B-2/CU240E-2
Data type: FloatingPoint32
Dyn. index: MDS
Func. diagram: -
Factory setting
0.00000 [ohm]
Data type: FloatingPoint32
Dyn. index: MDS
Func. diagram: -
Factory setting
0.00000 [ohm]
Data type: FloatingPoint32
Dyn. index: MDS
Func. diagram: 6727
Factory setting
0.00000 [ohm]
List Manual (LH11), 01/2016, A5E33839529