T1 - Omron Control INSTRUCTION MANUAL
Page
10
SHAW-ALMEX INDUSTRIES LIMITED
49900-030 October 2000
Revised Mar03, Jun04, Aug04, Jun05
6.3.1. Auto Tune
The temperature controller has an AUTO TUNE (At) function that calibrates the controller with the heating
element and the temperature sensor. The controller has been calibrated at the factory and will not require
calibration unless the controller, the heating element or the temperature sensor is changed. Auto Tune the
controller as follows:
1.
Connect the power supply and switch the platens to
ON
.
2.
Press the Level key for less than one second and release. At is displayed. If protection is on, it must be
switched off.
3.
Press the Up key to switch no. 2 display from off to on. After 2 seconds, the At display will begin to flash.
The At display will flash until auto tuning is complete. After set point has been reached, it may take
approximately 10 minutes to complete auto tuning. It is not necessary to wait for the At display to stop
flashing before returning to the temperature display.
4.
Press the Level key for less than one second to return to the temperature display. The no. 2 display (set
value) will flash until tuning is complete.
5.
If the Process Value and the temperature on the test meter are different proceed to 6.3.2 Temperature
Offset to make adjustment.
6.3.2. Temperature
Offset
If the external temperature meter reading and the temperature controller value are not the same after Auto
Tuning, the controller should be adjusted. Subtract the controller reading from the external temperature meter
reading and record this difference. Adjust the controller as follows:
1.
Press the Level key for less than one second and release. At is displayed. If protection is on, it must be
switched off.
2.
Press the Mode key to show inS (input shift) in the no. 1 display.
3.
Press the Up or Down key to enter the temperature difference recorded above in the no. 2 display.
4.
Press the Level key for less than one second and release to return to the temperature display. Notice that
the process value (no. 1 display) has changed by the amount you entered.
