FSE Series Electric Actuator
Installation & Maintenance Manual
20
November 18, 2022
www.atcontrols.com
Engineering\documents\products\IOM\Iom08026.docx
4. P4 Terminal
Contact Rating: 3A / 250V
P4 is a contact for alarm status. If the microprocessor detects that the actuator has not reached the preset end of
travel stop within 15 seconds, the P4 contact is activated. It can connect with an alarm input or similar devices for
warning signal.
5. Sensitivity Switch (SW2)
Switch SW2 is to adjust the sensitivity of the actuator. When the sensitivity setting is higher, the resolution of the
input signal will be higher, and the deadband will be smaller. Excessively high sensitivity may cause the actuator
to continuously hunt for position and eventually lead to the motor overheating, which may cause the internal
thermostat to trip, thus disabling movement. If the actuator has trouble settling to position, the sensitivity setting
should be reduced.
S W2
1
2
3
4
5
6
7
8
9
0
1 = Highest Sensitivity
0 = Lowest Sensitivity
3 = Factory Default