YOKOGAWA UT350, Instruction Manual

Page: 39 / 82

<Toc> <3. Operations>
3-5
IM 05D01D02-41E
5.
Press the
S E T / E N T
key once to register the
setpoint. (This starts auto-tuning.)
If the
S E T / E N T
key is pressed when AT = OFF,
auto-tuning will be cancelled. In this case,
PID contains the value existing before
auto-tuning.
P V
MAN
A / M
S P
AL1 2 3
SP 2 3 4
S E T / E N T
1st Edition : May 31,2000-00
6.
During auto-tuning, the panel indications
become as shown below.
P V
MAN
A / M
S P
AL1 2 3
SP
2 3 4
S E T / E N T
MAN lamp
blinks.
Auto-tuning is complete when the MAN
lamp goes off.
3.4 Setting PID Manually
If you know the values to be set or if suitable PID constants cannot be obtained by auto-
tuning, follow the procedure below to set values.
1.
Bring the operating display into view
(display appears at power on).
P V
MAN
A / M
S P
AL1 2 3
SP 2 3 4
S E T / E N T
Displays
target setpoint.
Displays PV.
2.
Press the
S E T / E N T
key for more than 3 sec-
onds to call up the menu “OP.PA”.
P V
MAN
A / M
S P
AL1 2 3
SP
2 3 4
S E T / E N T
Displays
menu “OP.PA”.
3.
Press the
S E T / E N T
key several times to
display the parameter “PID”.
P V
MAN
A / M
S P
AL1 2 3
SP
2 3 4
S E T / E N T
Displays
parameter
“PID”.
4.
Press the key once to display “1Gr”.
P V
MAN
A / M
S P
AL1 2 3
SP
2 3 4
S E T / E N T
Blinks during
change.
5.
Press the
S E T / E N T
key once to register the
setpoints.
P V
MAN
A / M
S P
AL1 2 3
SP
2 3 4
S E T / E N T
6.
Press the
S E T / E N T
key once to display the
parameter “1.P” (proportional band for
1.SP).
P V
MAN
A / M
S P
AL1 2 3
SP
2 3 4
S E T / E N T
Displays
parameter
“1.P”.