Omron E5CN Manual page 9

E5CN
2. PID Control Using Auto-tuning
Typical Application Example
•
Changing Parameters
indicates that there is a parameter. Keep
on pressing the mode key until the de-
sired parameter is selected.
•
Changing Set Values
Use the or
change the set value displayed
in the setup menu.
Display
E5CN E5GN
No. 1 display
No. 2 display
No. 2 display
Setup procedure
Power ON
keys to
Set input
No. 1 display
specifications
Set control
specifications
Self-tuning
Check control period
Check alarm type
PV/SP
After AT execution.
Set the set point
During AT execution.
While AT is being
AT execution
executed, SP will flash.
After AT execution.
During AT execution.
Set operation status
Set alarm values
Start operation
Typical Example
Input type: 4 T thermocouple -200 to 400°C
Control method: PID control
ST (self-tuning): OFF
Calculate PID constants by AT (auto-tuning).
Alarm type: 2 upper limit
Alarm value 1: 30°C (For setting deviation)
Set point: 150°C
Power ON
Operation level
Press
seconds. Control stops.
Initial setting level
Press
keys to select
input type.
Press
keys to select
PID control.
Press
keys to set ST
to OFF.
Check the
control period.
Check alarm
type.
Press
Operation level
Press keys
to set set point to
"150
C."
Press
Adjustment level
Execute AT
(auto-tuning).
Operation level
Make sure that
set point is
"150
C."
Make sure that
control is running.
Press
keys to set
alarm value to
"30
C."
Start program execution
E5CN
Process value/
set point
key for at least three
Input type
In PID control
To cancel ST
Control period When set to ON,
(heat) (unit: self-tuning operates.
seconds) Recommended set-
tings: 20 seconds for
the relay output and
Alarm 1 type 
2 seconds for the
(upper-limit
SSR output.
alarm)
key for at least one second.
Process value/
set point 

key for less than one second.
Set to  for execut-
To execute AT
ing AT and to 
for stopping AT.
Press key for less than one second.
Process value/
set point 

During run
Alarm
value 1