ABB ACS880 Firmware Manual page 450

450 Parameters
No. Name/Value
81.11 PID feedback
supervision
Bit Name
0 Disable all
1 Below low level
2 Above high level
3 Between low and high 1 = Triggers web-loss function reaction as the PID feedback signal is
4 High or low
5...15 Not used
0b0000 ... 0b1111
81.12 Level low
-32767.00...
32767.00 %
81.13 Level high
-32767.00...
32767.00%
81.14 PID error threshold
%
-32767.00...
32767.00%
81.15 Closed-loop
supervision
Not selected
Selected
Other
81.19 Closed-loop trip
delay
0.00...32767.00 s
Description
Defines control word to set up closed-loop supervision
function mode of operation.
Description
1 = Prevents any reaction on PID feedback signals status
1 = Triggers web-loss function reaction as the PID feedback signal
goes below the threshold set in parameter
1 = Triggers web-loss function reaction as the PID feedback signal
goes above the threshold set in parameter
between the thresholds set in parameters
Level high.
1 = Triggers web-loss function reaction as PID feedback signal goes
below threshold set in parameter
set in parameter 81.13 Level
Control word.
Defines low level threshold for the closed-loop supervision
function.
Note: Set up in parameter
Percent of low level threshold.
Defines high level threshold for the closed-loop supervision
function.
Note: Set up in parameter
Percent of low level threshold.
Defines the tripping threshold for the PID error signal
Controller error %. Set this value to what you consider a
normal control deviation.
If the control error goes above this value, in combination
with the trigger set in parameter
supervision, the drive may trip to a Web-loss condition.
PID error tripping threshold.
Defines the source for a digital signal to enable/disable the
Closed-loop supervision function.
Closed-loop supervision function disabled.
Closed-loop supervision function enabled.
Source selection (see Terms and abbreviations
page 152).
Defines the time delay before the closed-loop supervision
function triggers a reaction set in parameter
function.
The delay counter activates when
signal goes above the value set in parameter
error threshold % and at least one of the triggers set in
parameter 81.11 PID feedback supervision
Closed loop trip delay time.
81.12 Level
81.13 Level
81.12 Level low
81.12 Level low
high.
81.11 PID feedback supervision.
81.11 PID feedback supervision.
81.11 PID feedback
on
81.01 Web-loss
78.60 Controller error %
81.14 PID
is active.
Def/FbEq16
-
low.
high.
and 81.13
or above threshold
1 = 1
5.00%
100 = 1 %
95.00%
100 = 1 %
78.60 5.00%
100 = 1 %
Selected
0
1
-
0.50 s
100 = 1 s