FSE Series Electric Actuator
Installation & Maintenance Manual
16
November 18, 2022
www.atcontrols.com
Engineering\documents\products\IOM\Iom08026.docx
On-Off Control Board Adjustment
Displayed board layout is for 110/220V.
Lamp
No.
Status
LED1
Power
LED2
Operating
LED3
Motor Brake
LED4
Fault Status
Modulating Control Actuators Potentiometer Setting
For modulating actuators, after completing the position calibration, turn the actuator to the spring released
position and follow the procedure below.
a.
Loosen the M5 set screw on the shaft sector gear.
b.
Rotate the sector gear clockwise or counterclockwise, depending on the actuator fail direction, to the
position in the figures below.
c.
Tighten M5 set screw.
d.
If installing new potentiometer, loosen potentiometer round gear set screw and with small screwdriver,
rotate potentiometer to its end position while the actuator is in its fail position (CCW for fail CW actuator, or
CW for fail CCW actuator). Retighten set screw.
Fail clockwise (CW) rotation
Fail counterclockwise (CCW) rotation
