Spirax Sarco AEL7 Series - AUTOTUNE - Setting the Stroke with Positioner Card

IM-P713-01 CTLS Issue 1
51
AEL7 Series Electric actuator
6.6 AUTOTUNE – Setting the Stroke with Positioner Card
For some applications it may be necessary to set the stroke of the actuator to suit a given application or
valve.
With the actuator spindle in the fully extended position, the power supply safely isolated and the actuator
cover removed:
-
Ensure that the potentiometer is in the zero position (confirm with a measurement instrument if necessary)
-
Manually move the valve off its seat approximately 20-50%
-
With reference to Table. 12 "DIP Switch Configuration", set S2.7 and S2.8 to "OFF"
-
Set S1.1 to "ON" (RED and GREEN LED will flash continuously)
-
Press "HAND" button (Blue LED illuminates)
-
Press "UP" button and retract actuator to the desired 100% travel
-
Press "PROG" and "UP" simultaneously for 5s to set 100% (orange LED flashing and red LED Illuminates
slowly)
-
Press "DOWN" button and extend actuator to the desired 0% travel
-
Press "PROG" and "DOWN" simultaneously for 5s to set 100% (orange LED flashing and green LED
illuminates)
-
Stroke is now set
-
Set S1.1 to "OFF"
-
Apply a modulating signal. The actuator movement will now correspond to the input signal