Speed Controller Pre-Control; Scaling Accel. Precontrol; Scaling Accel. Torque Control - Siemens MICROMASTER 440 Parameter Manual

Parameter Description
3.29.2.3

Speed controller pre-control

P1496[3]

Scaling accel. precontrol

CStat: CUT
P-Group: CONTROL
Enters scaling of acceleration in [%].
The response of setpoint changes for the speed control loop can be improved using the precontrol function
(P1496). Precontrol is derived from the differential frequency setpoint multiplied by the mass inertia P0341;
P0342 is then supplied as a torque setpoint to the current controller. If the filter (VC: P1442, SLVC: P1452)
is applied in the correct manner, the derived speed controller is only required to control a small deviation in
the value of the corrected variable. Setpoint changes are then passed by the speed controller and are
quickly executed.
r1170
Freq. setpoint
Act. frequency
Index:
P1496[0] : 1st. Drive data set (DDS)
P1496[1] : 2nd. Drive data set (DDS)
P1496[2] : 3rd. Drive data set (DDS)
Note:
P1496 = 0:
Precontrol disabled
P1496 > 0:
Precontrol enabled
P1496 = 100:
Standard setting for precontrol
P1499[3]

Scaling accel. torque control

CStat: CUT
P-Group: CONTROL
Enters scaling of acceleration in [%] for sensorless torque control (SLVC) at low frequencies.
Index:
P1499[0] : 1st. Drive data set (DDS)
P1499[1] : 2nd. Drive data set (DDS)
P1499[2] : 3rd. Drive data set (DDS)
172
Datatype: Float
Active: Immediately
r1490
150 ms
P0341 P0342
P1496
=0
–
>0
r0063
Datatype: Float
Active: Immediately
Min:
Unit: % Def:
QuickComm.: No Max:
Droop
r1518
r1538
PI
r1538
Speed
r1539
controller
–
r1539
Min:
Unit: % Def:
QuickComm.: No Max:
MICROMASTER 440
Issue 01/06
Level
0.0
3
0.0
400.0
r1538
Torque
setpoint
r1539
r1508 r0079
Level
0.0
3
100.0
400.0
Parameter List
6SE6400-5BB00-0BP0