Function library
Function blocks
3.5.43 Internal motor control (MCTRL)
3−212
l
EDSVS9332P−EXT DE 2.0
3.5.43.4 Speed controller
The speed controller is designed as an ideal PID controller.
Parameter setting
If you select a motor via C0086, the parameters are preset so that only a few (if any) adaptations to
the application are necessary.
l Parameterisation of the proportional gain V
p
in C0070:
– Enter approx. 50 % of the speed setpoint
– Increase C0070 until the drive becomes unstable (observe motor noises)
– Reduce C0070 until the drive runs stable again
– Reduce C0070 to approx. 50 %
l Parameterisation of the reset time T
n
in C0071:
– Reduce C0071 until the drive becomes unstable (observe motor noises)
– Increase C0071 until the drive runs stable again
– Set C0071 to the double value
l Parameterisation of the derivative gain T
d
in C0072:
– Increase C0072 during operation until an optimum behaviour is achieved.
Signal limitation
When the drive outputs the max. torque, the speed controller operates within the limits.
l The drive cannot follow the speed setpoint.
l This state is indicated with MCTRL−MMAX = HIGH.
Setting the integral component
To enter defined starting values for the torque the integral component of the n−controller can be set
externally (e.g. when using the brake control).
l MCTRL−I−LOAD = HIGH
– The n−controller accepts the value at input MCTRL−I−SET as its integral component.
– The value at input MCTRL−I−SET acts as a torque setpoint for the motor control.
l MCTRL−I−LOAD = LOW
– Function is switched off.
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