5. SETUP PROCEDURES PRIOR TO RUNNING THE INSTRUMENT
IMR02C15-E4
5-10
Tuning PID parameters
Suitable PID values are automatically calculated by Autotuning (AT) function.
The Autotuning (AT) function automatically measures, computes and sets the optimum PID values.
Before start autotuning, make sure that all required conditions (refer to P. 6-8) to start AT
are satisfied.
Start the Autotuning (AT)
1. Press and hold
the key for 2 seconds or more at the PV/SV monitor screen to go to the
Parameter setting mode, and press the key to display the AT screen.
2. Press the key to change the blinking digit from 0 to 1. Press the key and autotuning
will start. The AT lamp on the front panel will flash.
• Autotuning (AT) finish
When the Autotuning (AT) is finished, the control will automatically returns to PID control and the
AT lamp turns off.
• Autotuning (AT) cancellation
When canceling the Autotuning function (AT), press the key to be set to “0000” with the
Autotuning (AT) screen.
• Return to the PV/SV monitor
To return the PV/SV monitor, press and hold the key for 2 seconds or more.
After a new value is displayed on the display by using and keys, if no key
operation is performed within 1 minute without pressing key, this instrument returns
to the PV/SV monitor screen and the set value will not be changed.
SET
SET
SET
SET
28$
200
SV1
OUT1
OUT
T
DO1 DO
MAN
STOP
DO3
DO4
PV/SV monitor
SV1
0200
SV1
OUT1
OUT
T
DO1 DO
MAN
STOP
DO3
DO4
ATU
0000
SV1
OUT1
OUT
T
DO1 DO
MAN
STOP
DO3
DO4
2 seconds or more
SET
Parameter setting mode
Set value1 (SV1)
SET
Parameter setting mode
Autotuning (AT)
Press the key to
T screen (ATU)
SET
STU
0000
SV1
OUT1
OUT
T
DO1 DO
MAN
STOP
DO3
DO4
ATU
0000
SV1
OUT1
OUT
T
DO1 DO
MAN
STOP
DO3
DO4
Autotuning (AT)
ATU
0001
SV1
OUT1
OUT
T
DO1 DO
MAN
STOP
DO3
DO4
SET
Start AT by pressing
the key.
SET
T lamp flashing
Autotuning (AT) start
Displays the next parameter
Startup tuning (ST)
Press the key to
change the number to 1.
SET
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