ABB ACS880 Firmware Manual page 438

438 Parameters
No. Name/Value
78.17 I-time 2
0.000...
32767.000 s
78.18 D-time 2
0.0...32767.0 ms
78.21 Stall P-gain
0.00...32767.00
78.22 Stall I-time
0.000...
32767.000 s
78.25 Invert PID error sign
Not selected
Selected
Other
78.26 Negative error
response
0.00...100.00%
78.27 Positive error
response
0.00...100.00%
Description
Defines the maximum integration time used by PID
controller as actual diameter progresses towards the full roll
diameter (par. 76.09).
Note: This parameter is active only when parameter
PID adaptation is enabled.
Integration time.
Defines the maximum derivation time used by PID controller
as actual diameter progresses towards the full roll diameter
(par. 76.09).
Note: This parameter is active only when parameter
PID adaptation is enabled
Derivation time.
Defines the tension controller gain in stall mode.
Tension controller gain.
Defines the tension controller integration time in stall mode.
Integration time.
Enables invert signal 78.60 Controller error %
Note: Activating this function results in inverting the
controller output sign as well.
Invert PID error sign is disabled.
Invert PID error sign is enabled.
Source selection (see Terms and abbreviations
152).
Defines the controller response magnitude in instance when
78.60 Controller error %
Controller negative error response
Defines the controller response magnitude when parameter
78.60 Controller error %
Response balancing can be used if the feedback signal is
more sensitive in one direction, e.g. dancer weight naturally
helps it go lower so negative error response could be more
delicate.
Controller positive error response
sign.
on page
is negative.
is positive.
Def/FbEq16
10.000 s
78.14
1000 = 1 s
0.0 ms
78.14
10 = 1 ms
0.25
100 = 1
10.000 s
1000 = 1 s
Not selected
0
1
-
100.00%
100 = 1%
100.00%
100 = 1%