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UR3274U - User manual
7.2
Auto-Tune
Tuning procedure calculates the controller parameters
and can be manual or automatic according to selection on
parameter 46
tune
.
7.3
Manual Tuning
Manual procedure allows the user greater flexibility to
decide when to update PID algorithm work parameters. The
procedure can be activated in two ways.
• Running Tuning by keyboard
:
Press
FNC
key until display 1 shows the writing
tune
with
display 2 showing
oFF
, press
, display 2 shows
on
. The
T
led switches on and the procedure begins.
• Running Tuning by digital input
:
Select
tune
on parameter 50
dGt.i.
At first activation of digital input (commutation on front
panel)
T
led switches on and at second activation
switches off.
7.4
Automatic Tuning
Automatic tuning activates whenever the controller is switched
on or when the setpoint is modified to a value over 35%.
To avoid an overshoot, the treshold where the controller
calculates new PID parameters is determined by the setpoint
value minus the “Set Deviation Tune” (see Parameter 47
s.d.tu.
).
To exit Tuning and keep PID values unchanged, just press the
FNC
key until display 1 shows the writing
tune
with the display
showing
on
, press
, display 2 shows
off
.
The
T
led switches off and the procedure finishes.
