Temperature Controllers
E5CSZ
9
4. Using the Control Mode Switches
(1) Using ON/OFF Control and PID Control
ON/OFF Control
The control mode is set to ON/OFF control as the default setting.
To perform cooling control of freezers, etc., turn ON switch 3.
PID Control
Turn ON switch 1 to use PID control.
1. Set the control period.
Performing Control via Relay Output, External Relay, or
Conductor
Switch 2: OFF (control period: 20 s)
Quick Control Response Using an SSR
Switch 2: ON (control period: 2 s)
2. Set direct/reverse operation for the output.
Performing Heating Control for Heaters
Switch 3: OFF
Performing Cooling Control for Freezers
Switch 3: ON
6
5
4
3
2
1
ON
Switch 1 OFF: ON/OFF control
OFF
ON
Control output
SP
6
5
4
3
2
1
ON
OFF
ON
Control output
SP
6
5
4
3
2
1
ON
Switch 1 ON: PID control
6
5
4
3
2
1
ON
OFF
ON
Control output
20 s
6
5
4
3
2
1
ON
OFF
ON
Control output
2 s
6
5
4
3
2
1
ON
0%
100%
SP
Output level
6
5
4
3
2
1
ON
0%
100%
SP
Output level
ST (Self-tuning) Features
ST (self-tuning) is a function that finds PID constants by
using step response tuning (SRT) when Controller
operation begins or when the set point is changed. Once
the PID constants have been calculated, ST is not
executed when the next control operation is started as
long as the set point remains unchanged. When the ST
function is in operation, be sure to turn ON the power
supply of the load connected to the control output
simultaneously with or before starting Controller
operation.
Executing AT (Auto-tuning)
AT (auto-tuning) is executed by pressing the
U
Up and
D
Down Keys for at
least 2 s while the PV is displayed. The deviation indicators flash during auto-
tuning (AT) execution. AT will be cancelled by performing the same operation
that AT is executing during AT operation. Flashing stops when AT is completed.
Note: One of the deviation indicators (
▲■▼
) will flash.
AT execution in progress
Press for
at least 2 s.
Press for
at least 2 s.
U D
U D
AT execution in progress
AT execution
AT cancelled
