Speed Control - ABB ACS355 User Manual

All parameters
No. Name/Value
DI1(INV)
DI2(INV)
DI3(INV)
DI4(INV)
DI5(INV)
23 SPEED
CONTROL
2301 PROP GAIN
0.00...200.00
Description
Inverted digital input DI1. 0 = ramp input is forced to zero.
Ramp output will ramp to zero according to the used ramp
time.
See selection DI1(INV).
See selection DI1(INV).
See selection DI1(INV).
See selection DI1(INV).
Speed controller variables. See section
tuning on page 142.
Note: These parameters do not affect drive operation in
scalar control, ie when parameter
MODE setting is SCALAR:
Defines a relative gain for the speed controller. High gain
may cause speed oscillation.
The figure below shows the speed controller output after an
error step when the error remains constant.
%
Error
value
Controller
output =
K · e
p
Note: For automatic setting of the gain, use autotune run
(parameter 2305 AUTOTUNE
Gain
Actual signals and parameters 227
Speed controller
9904 MOTOR CTRL
FREQ.
Gain = K = 1
p
T = Integration time = 0
I
T = Derivation time = 0
D
Controller output
RUN).
Def/FbEq
-1
-2
-3
-4
-5
5.00
e = Error
value
t
1 = 0.01