Speed Ctrl - ABB ACS800 Firmware Manual

182
Index Name/Selection
22.08 ACC PTR
-255.255.31 ...
+255.255.31 / C.-
32768 ... C.32767
22.09 DEC PTR
-255.255.31 ...
+255.255.31 / C.-
32768 ... C.32767
22.10 FST STP DCCL TIME Defines the time inside which the drive is stopped if the drive receives an Fast
0.00 ... 1800.00 s

23 SPEED CTRL

23.01 GAIN
0.0 ... 250.0
Actual signals and parameters
Description
Defines the source or constant for value PAR 22.08&09 of parameter 22.01.
Parameter index or a constant value. See parameter
for information on the difference.
Defines the source or constant for value PAR 22.08&09 of parameter 22.01
Parameter index or a constant value. See parameter
for information on the difference.
Stop command (parameter 10.10).
Deceleration time
Speed controller variables. The parameters are not visible if parameter
SCALAR. See section Speed controller tuning
Note: After the motor STANDARD ID run is successfully completed, the speed
controller parameters 23.01 GAIN and 23.02 INTEGRATION TIME are
updated to optimized crane application settings (parameter 23.01 to 15 and
parameter 23.02 to 0.5). You can manually change these settings afterwards.
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.
%
Controller
output = K · e
p
Gain
10.04
10.04
on page 71.
Gain = K = 1
p
T = Integration time = 0
I
T = Derivation time = 0
D
Error Value
Controller Output
e = Error value
FbEq
EXT1 STRT PTR 100 = 1 s
EXT1 STRT PTR 100 = 1 s
0 ... 18000
99.04 =
t
0 ... 25000