LED status indicator

Constantly lit LED

If the actuator is operating correctly with no fouls, the LED shows a constantly lit light.

LED flashes with 2 blinks

If the actuator has been left in "manual" mode, the actuator's motor runs but doesn't drive the output shaft. After a preset time, the actuator knows that because the torque limiter has not been activated and that the motor is running, it must be in manual.

LED flashes ON/OFF

When the actuator senses an inpending valve jam, the electronic torque limiter is activated, and upon activation, repeatly flashes the LED on and off.

- Power open, power close
- Stays in position upon power failure

Function : failsafe version

- Power open, power close. Trickle charges battery in either open or closed position.
- Actuator driven by battery power to preset failsafe position upon power failure.
- Actuator returns to pre-failure position on power resumption
- Failsafe can be either NC (normally closed) or NO (normally open)

Modulating actuators

Function : modulating version

- Power open, power close. Actuator movement controlled.
- Standard operation : 4mA or 0V = actuator closed, 20 mA or 10V = actuator open (can ben reversed)
- Standard operation : actuator closes on loss of control signal, stays put if loss of main power.
- Output signal provided as standard (in same format as supply signal).

12 to 24 VAC/VDC and 85 to 240 VAC/VDC

Wiring diagram (ON/OFF or failsafe actuators)

Wiring diagram (modulating actuators)