Self-tuning cancelation – West Control Solutions KS98-1 User Manual
Page 44
The self-tuning statuses are indicated with priority in
the display field for manual operation.
w
Self-tuning running, display:
ORun
w
Self-tuning faulty, display:
OErr
Self-tuning completed with an error is finished by
pressing key H twice.
Self-tuning cancelation
Self-tuning can be stopped at any time by pressing key
H, or by selecting Stop in the Stat field (status).
Operating pages
9499-040-82711
I-44
Controller
t
W
X
Y
Cancellation
t
W
X
Y
Cancellation
>1 Std.
t
W
X
Y
Cancellation
t
W
X
Y
Cancellation
t
Ymax
Y
Cancellation
{Y<5%
t
W
X
Y
Cancellation
<10% W0..W100
>1 Std.
Fig.30: Controller page with started self tuning
ORes1/2
Signification or trouble cause
Possible solution
0
No attempt was made or attempt cancelled by
Stat: Stop or
switchover to manual mode ( H key) .
1
Cancellation:
Faulty correcting variable output action,
X does not change in the direction of W.
Change controller
output action.
2
Finished: self-tuning was completed successfully (reversal point found, safe estimation)
3
Cancellation:
The process does not respond or responds too
slowly (change of {X smaller than 1% in 1 hour)
Close control loop.
4
Completed, withou6
AdaErr:
Successful attempt, process has a low reversal point
Optimum result with low re-
versal point
Cancellation, with
AdaErr:
Attempt failed, process stimulation low
(Reversal point found, but estimatio n is unsafe
Increase output step change
dYopt.
5
Cancellation:
Self-tuning cancelled because of exceeded
hazard.
Increase separation of pro-
cess value (X) and (W) when
starting, or decrease
YOptm .
6
Completed: attempt successful, but self-tuning cancelled due to exceeded hazard.
(Reversal point not reached so far; safe estimation).
7
Cancellation:
Output step change too small, {Y < 5%.
Increase
Ymax or set
Yoptm to a smaller value.
8
Cancellation:
reserve too small, or exceeded
whilst PiR monitoring is busy.
Vary stable correcting vari-
able
YOptm.
Signification of self-tuning messages
ORes1/ORes2 for controller type CONTR and CONTR+