User manual - ATR227 -
11
6.3 Keys
8
c
• Increases main setpoint.
• During configuration phase, allows to slide through parameters.
Together with
SET
it modifies them.
• Pressed after
SET
increases alarm setpoint.
9
d
• Decreases main setpoint.
• During configuration phase, allows to slide through parameters.
Together with
SET
it modifies them.
• Pressed after
SET
decreases alarm setpoint.
10
SET
• Allows to display alarm setpoints and runs the Tuning function.
• Allows to modify configuration parameters.
7
Controller Functions
7.1 Modifying Main Setpoint and Alarm Setpoint Values
Setpoint value can be modified by keyboard as follows:
Press
Display
Do
1
c
or
d
Value on display 2 changes. Increase or decrease main setpoint.
2
SET
Visualizes alarm setpoint on
display 1.
3
c
or
d
Value on display 2 changes. Increase or decrease the alarm
setpoint value.
7.2 Auto-Tuning
Tuning procedure to calculate regulation parameters can be manual or automatic
according to selection on parameter 8 (
P.i.d.
).
7.3 Manual Tuning
Manual procedure allows the user a greater flexibility to decide when to update PID
algorithm parameters. After selected
MAn.
on parameter 8 (
P.i.d.
), the procedure can
be activated in two ways:
•
Running Tuning by keyboard
:
Press
SET
until display 1 shows the writing
tunE
with display 2 showing
oFF
, press
c
, display 2 shows
on
.
TUN
led switches on and the procedure starts.
•
Running Tuning by digital input
:
Select
tunE
on parameter 25
dGt.i
. At first activation of digital input (commutation
on front panel)
TUN
led switches on while at second activation switches off.
