Current Controller Adaptation - Siemens SIMODRIVE 611 universal Function Manual

4 Commissioning
4.8 Permanent–magnet synchronous motor with field–weakening (PE spindle)
4.8.3

Current controller adaptation

Pre–setting of the
current controller
adaptation
Setting the current
controller
adaptation
Goal when
setting the
P gain K
p
4-160
The current controller adaptation must be pre–set as follows before
subsequently setting and checking:
Proportional gain K
p
P1120
= calculated
value [V/A]
P1182
= 30 %
P1180 = 0 %
Fig. 4-10 Pre–setting of the current controller adaptation for 1FE1 motors
To check and set the current controller adaptation, different current set-
point steps are entered via the SimoCom U parameterizing and start–
up tool using the measuring function. The appropriate step response is
then evaluated (current actual value = torque actual value).
The adaptation characteristic for the P gain K
should be set over the complete current I
mally set at each current, and does not overshoot.
K is optimum
p
––> OK
Fig. 4-11 How should the step response be evaluated?
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
P1181 = 30 %
of the current controller
p
, so that the controller is opti-
q
K is too high,
p
overshoots
––> not OK
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01.99
I
q
I
max
I
d
K is too low,
p
dampened
transient response
––> OK, not optimum