Siemens MICROMASTER 440 - Rotor Time Constant; Total Leakage Time Constant; CO: Stator Resistance IGBT [%]; CO: Total Stator Resistance [%]

Parameter Description Issue 01/06
MICROMASTER 440 Parameter List
66 6SE6400-5BB00-0BP0
r0384[3] Rotor time constant Min: -
Datatype: Float Unit: ms Def: -
P-Group: MOTOR Max: -
Displays calculated rotor time constant [ms].
Index:
r0384[0] : 1st. Drive data set (DDS)
r0384[1] : 2nd. Drive data set (DDS)
r0384[2] : 3rd. Drive data set (DDS)
r0386[3] Total leakage time constant Min: -
Datatype: Float Unit: ms Def: -
P-Group: MOTOR Max: -
Displays total leakage time constant of motor.
Index:
r0386[0] : 1st. Drive data set (DDS)
r0386[1] : 2nd. Drive data set (DDS)
r0386[2] : 3rd. Drive data set (DDS)
r0394 CO: Stator resistance IGBT [%] Min: -
Datatype: Float Unit: % Def: -
P-Group: MOTOR Max: -
Displays stator resistance calculated in [%] from IGBT ON voltage and current amplitude.
Note:
% 100 <=>
0305P3
0304P
I 3
V
N
N
⋅
=
⋅
=
Z
N
=
ph
V
ph
I
Rated motor impedance:
r0395 CO: Total stator resistance [%] Min: -
Datatype: Float Unit: % Def: -
P-Group: MOTOR Max: -
Displays the actual stator resistance (combined stator/cable resistance) of the motor as a [%] as a function
of the actual stator winding temperature.
Note:
Actual stator winding temperature, refer to r0632
% 100 <=>
0305P3
0304P
I 3
V
N
N
⋅
=
⋅
=
Z
N
=
ph
V
ph
I
Rated motor impedance:
r0396 CO: Act. rotor resistance Min: -
Datatype: Float Unit: % Def: -
P-Group: MOTOR Max: -
Displays the actual rotor resistance of the motor equivalent circuit diagram (phase value) as a [%] as a
function of the actual rotor winding temperature.
Note:
- Actual rotor winding temperature, refer to r0633
- Values greater than 25 % tend to produce excessive motor slip. Check rated motor speed [rpm] value
(P0311).
% 100 <=>
0305P3
0304P
I 3
V
N
N
⋅
=
⋅
=
Z
N
=
ph
V
ph
I
Rated motor impedance:
Level
3
Level
4
Level
4
Level
3
Level
3
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