Lenze EVF9333−xV - Manual (Page 296)

Configuration
Function blocks
Internal motor control with V/f characteristic control (MCTRL1)
8
8.2
8.2.6
l
8.2−34 EDSVF9333V EN 6.2−04/2012
With feedback operation, a PI controller will control the slip.
Activating the speed control
The speed control is activated when you select an incremental encoder in
C0025.
Parameter setting
Code Function
C0070 Gain V
p
C0071 Integral−action time T
n
C0074 Influence of the speed controller at operation with incremental encoder.
Reference is n
max
(C0011).
)
Note!
If the speed controller influence is adapted to the motor slip to
be expected, the motor cannot accelerate in an uncontrolled way
when the incremental encoder fails.
Adaptation of the speed controller
The gain of the speed controller can be changed online via the input
MCTRL−VP−N−ADAPT. The set gain in C0070 is the reference value for an input
signal of 100 %.
ƒ You can influence the gain (C0070) by adapting a function block (e.g.
CURVE) to MCTRL−VP−N−ADAPT.
ƒ The adaptation is switched off in the Lenze default setting.
Speed control