Siemens SINAMICS DCM Operating Instructions Manual page 250

Commissioning
8.7 Drive optimization
p50051 = 26
During the speed controller optimization run, the motor is accelerated at a maximum of 45%
of its rated armature current. The motor can reach speeds of up to approximately 20% of
the maximum speed.
p50051 = 27
250
Optimization of speed control
(Takes at least 6 s)
The dynamic performance of the speed control loop can be selected using
p50236, whereby lower values represent a softer closed-loop control.
Before carrying out the speed controller optimization run, p50236 must be
set and influences the setting of p50225, p50226, p50228 and p50540.
Where possible, the final mechanical load should be connected to the
motor for the purpose of optimizing the speed controller, as the
parameters set depend on the measured moment of inertia.
The following parameters are automatically set:
p50225, P gain of speed controller (Kp)
p50226, integral time of speed controller (Tn)
p50228, speed setpoint smoothing time constant
p50540 speed controller acceleration time
Remark:
The speed controller optimization run only takes into account the filtering
of the actual speed controller value that is set at p50200; and if p50083 =
1, also filtering of the main actual value, which is parameterized at
p50745.
For p50200 <20 ms, P50225 (gain) is limited to a value of 30.00. The
speed controller optimization run always sets p50228 (speed setpoint
filtering) to 0.
WARNING
Optimization of closed-loop EMF control (incl. field characteristic plotting)
(Duration, approx. 1 min)
This optimization run must be executed whenever field-weakening
operation has been selected (p50081 = 1), if closed-loop torque control
(p50170 = 1) or torque limiting (p50169 = 1) has been selected, or if a
variable field current setpoint has been entered.
This optimization run may also be started without a mechanical load. The
following parameters are set automatically:
p50120 to
p50139
p50275
p50276
Field characteristic (magnetization characteristic) of motor
P gain of EMF controller (Kp)
Integral time of EMF controller (Tn)
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619
SINAMICS DCM Control Module