23 Speed Control - ABB ACS350 User Manual

Parameters – complete descriptions
Index Name/Selection
DI2
DI3
DI4
DI5
COMM
DI1(INV)
DI2(INV)
DI3(INV)
DI4(INV)
DI5(INV)

23 SPEED CONTROL

2301 PROP GAIN
0.00...200.00
Description
See selection DI1.
See selection DI1.
See selection DI1.
See selection DI1.
Fieldbus interface as the source for forcing ramp input to zero, i.e. control
word 0301 FB CMD WORD 1 bit 13 (with ABB drives profile
19 bit 6). The control word is sent by the fieldbus controller via the fieldbus
adapter or embedded fieldbus (modbus) to the drive. For the control word
bits, see sections DCU communication profile
communication profile on page 258.
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
Defines a relative gain for the speed controller. Great 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
AUTOTUNE RUN).
Gain
on page 262
Speed controller tuning
Gain = K = 1
p
T = Integration time = 0
I
T = Derivation time = 0
D
Controller output
e = Error value
Actual signals and parameters
Def, FbEq
2
3
4
5
7
5319 EFB PAR
and ABB Drives
-1
-2
-3
-4
-5
on page 115.
10
t
2305
1 = 0.01
189