Omron E5CSZ Manual page 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.
ON
1 2
Switch 1 OFF: ON/OFF control
Control output ON
OFF
PID Control
Turn ON switch 1 to use PID control.
ON
1 2
Switch 1 ON: PID control
1. Set the control period.
Performing Control via Relay Output, External Relay, or
Conductor
Switch 2: OFF (control period: 20 s)
ON
1 2 3
Control output ON
OFF
Quick Control Response Using an SSR
Switch 2: ON (control period: 2 s)
ON
1 2 3
Control output ON
OFF
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.
3 4 5 6
SP
3 4 5 6
4 5 6
20 s
4 5 6
2 s
To perform cooling control of freezers, etc., turn ON switch 3.
Control output
2. Set direct/reverse operation for the output.
Performing Heating Control for Heaters
Switch 3: OFF
ON
1
100%
0%
Performing Cooling Control for Freezers
Switch 3: ON
ON
1
100%
0%
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.
AT execution
AT cancelled
AT execution in progress
Note: One of the deviation indicators (▲■▼) will flash.
Temperature Controllers
ON
1 2 3 4 5 6
ON
OFF
SP
2 3 4 5 6
Output level
SP
2 3 4 5 6
Output level
SP
U D
Press for
at least 2 s.
AT execution in progress
U D
Press for
at least 2 s.
E5CSZ
9