
FSE Series Electric Actuator
Installation & Maintenance Manual
15
November 18, 2022
www.atcontrols.com
Engineering\documents\products\IOM\Iom08026.docx
d.
After
adjusting the cam, apply power to drive actuator to the fully open (spring compressed) position.
e. Verify that the position it stops is correct. If it is correct, ensure the cam TC1 is fully tightened. If it is not
correct, remove power and readjust cam again.
f.
If auxiliary switches LS3 and LS4 will be used for feedback, cams TC3 and TC4 need to be adjusted. Full
limit switch function is listed in table below.
Limit Switch Truth Table
Switch
Position
Fail / 0%
(Spring Released)
Intermediate
End / 100%
(Spring Compressed)
LS4
1
0
0
LS3
0
0
1
LS2
0
1
1
LS1
1
1
0
FSE-440
FSE-1150 to FSE-2300
Fail open (CCW) unit.