Siemens SINAMICS DCM Operating Instructions Manual page 277

Details on the individual optimization runs
p50051 = 24
p50051 = 25
CAUTION
Motors with a permanent field, a very high level of retentiveness, or a series field must be
locked during this optimization run.
The current limits set are not active during the current controller optimization run. 75% of
the rated armature current for the motor flows for approximately 0.7 s.
Note
The parameters determined are dependent on the motor temperature. The values set with
the motor in the cold state can serve as a good default setting. For drives with a high
dynamic performance, the optimization run p50051=25 should be repeated after operating
the drive with a load (e.g. with the motor at the operating temperature.
SINAMICS DCM DC Converter
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
Optimization of closed-loop field-current control
(duration of up to 1 min.)
This optimization run may also be executed without a mechanical load
connected.
The following parameters are set automatically:
p50112, field resistance (Rf)
p50116, field inductance (Lf)
p50255, P gain of field-current controller (Kp)
p50256, integral time of field-current controller (Tn)
p51597 field inductance reduction factor
Optimization of closed-loop armature current control
(takes about 1 min.)
The current controller optimization run may also be executed without a
mechanical load connected; if necessary, the drive should be locked.
The following parameters are set automatically:
p50110, armature resistance (Ra)
p50111, armature inductance (La)
p51591, non-linearity factor of armature inductance (La_fak)
p51592, armature commutation inductance (Lk)
p51594, filter inductance for 12-pulse operation (Ls)
p51595, filter inductance reduction factor (Ls_fak)
p51596 filter resistance in 12-pulse operation (Rs)
p50155 P gain of the armature current controller (Kp)
p50156, integral time of armature current controller (Tn)
WARNING
Commissioning
8.7 Drive optimization
275