32
1.xx
1
COdE
1.xx
OFF
AtNE
1..xx
xxxx
xxxx
xxxx
xxxx
2.13.3
Auto-tune
Accessing the Auto-tune Facility
From any operating frame, press and hold the
key
until the 'COdE' frame is displayed.
Set the correct auto-tune password.
Auto-tune Enable
Select the type of auto-tune required.
Single Loop Templates
Cascade Templates
OFF
–
Off
SLV.A
–
Slave type A
A
–
Type A
SLV.b
–
Slave type B
b
–
Type B
MSt.A
–
Master type A
MSt.b
–
Master type B
Auto-tune is started automatically when the
key is
pressed.
Auto-tune can be stopped at any time by pressing the
key.
Note. Slave control loops only – place the slave
into local set point mode and adjust the set point to the
required value prior to autotuning.
Note. P + I control only – set the derivative term
to 'OFF' in the Tuning Level – see Section 3.2.
Return to the Operating Level.
…2
OPERATOR LEVEL
Set point
PV
x
1
x
2
x
2
x
1
1
4
=
Type A –
1/4
wave damping
Type B – Minimum Overshoot
Set Point
PV
Fig. 2.13 Autotune Types
