Efficient Networks S120 manual Reference model, 6SHHG Vhwsrlqw 6SHHGDFWXDOYDOXH

Models: S120

1 560
Download 560 pages 21.93 Kb
Page 126
Image 126

Vector control

4.5 Speed controller pre-control and reference model

Note

The ramp-up and ramp-down times (p1120; p1121) of the ramp function generator in the setpoint channel should be set accordingly so that the motor speed can track the setpoint during acceleration and braking. This ensures that speed controller pre-control is functioning optimally.

The acceleration pre-control using a connector input (p1495) is activated by the parameter settings p1400.2 = 1 and p1400.3 = 0. p1428 (dead time) and p1429 (time constant) can be set for balancing purposes.

Reference model

5HIHUHQFHPRGHOದ3UHFRQWURO

 

S S

 

 

U

S

U

S

 

 

 



 



6SHHG

VHWSRLQW

6SHHGDFWXDOYDOXH

7L

Figure 4-9 Reference model

'URRSIXQFWLRQ

 

 

 

 

LQMHFWLRQ

 

 

 

 

 

.S

7Q

 

 

 

 

 

 

 

U

 

,

3,

 

 

U

U

 

 

U>@

 

6SHHG

 

 

 

 

 

 

 

 

3

FRQWUROOHU

 

 

 



 

 

 

 

7RUTXH

 

 

 

 

6HWSRLQW

 

 

 

 

 

 

 

 

U>@

U

 

 

 

 

7L

.S

7Q

 

6/9&

 

S

S

S

 

9&

 

S

S

S

The reference model is activated when p1400.3 = 1 and p1400.2 = 0.

The reference model is used to emulate the path of the speed control loop with a P speed controller.

The path emulation can be set in p1433 to p1435. It is activated when p1437 is connected to the output of model r1436.

The reference model delays the setpoint-actual deviation for the integral component of the speed controller so that transient conditions can be suppressed.

126

Drive Functions

Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4

Page 126
Image 126
Efficient Networks S120 manual Reference model, 6SHHG Vhwsrlqw 6SHHGDFWXDOYDOXH