Linear electric actuators EL (1,2 kN to 25 kN)
The EL series linear electric actuators are designed for operation of control valves in modulating and on/off services in process engineering and industrial applications. The self-locking stem nut is driven by an electric motor via a gearing.
Load-dependent switches and/or mechanical limit switches define the stops for the end positions.
- Modular retrofittable design.
- 24 V AC, 115 V AC, 230 V AC, 400 V AC 50/60 Hz and 24 V DC supply voltages.
- Manual operation with disengagement of the actuator motor.
- IP 65 (EL12 IP 43) protection.
- Valve protection against excessive force due to load-dependent seating.
- Mounting to valves made via yoke or mounting flange DIN 3358, enabling easy connection to all types of valves. Standard version is suitable for ADCATrol valves.
- Defined closing force in the end positions leading to tight valve shut-off.
- Stall proof synchronous motors (or brake motors for higher positioning forces) ensure highest positioning accuracy.
- Mechanical stroke indication via anti-rotation bar.
- Exact, backlash-free measurement of actual valve stroke by direct coupling to the valve stem.
- Universally usable actuators due to control via 3-point-step controllers, analogue input signals (0 to 10 V, 0(4) to 20 mA), or fieldbus systems.
- Limit switches are easily adjustable for stroke limitation or as signal for intermediate positions.
- Electronic positioner.
- Additional limit switches.
- Potentiometers e.g. for 3-point-step control in closed loop.
- 0(4) to 20 mA electronic position feedback units.
- Heating resistor.
- Special coatings and finishes for aggressive environments.
Actuation of ADCATrol control valves, or others on request.
EL12, EL20, EL45, EL80, EL120 and EL250.