7ML 11ML 14ML 16ML Electric actuator

The intelligent electric actuator is driven by a three-phase asynchronous motor, which drives the hollow output shaft to output torque through worm gear and worm reduction. The reducer has a manual/electric switching mechanism. When the switching handle is in the manual position, the hand wheel drives the hollow output shaft to rotate through the clutch; During electric operation, the switching mechanism will automatically fall back to the electric position, the clutch and worm gear are engaged, and the hollow output shaft is driven by a three-phase motor to rotate.

The rotation of the output shaft of the actuator is transmitted to the Hall effect pulse sensor through the speed increasing mechanism, while the axial displacement generated by the axial force of the motor worm is transmitted to the mechanical torque control mechanism (switch mechanism) to control the valve position and torque.

The intelligent controller of the electric actuator receives standard analog current control signal or switching value control signal or bus signal, and locates the output shaft of the actuator at the position corresponding to the input signal; It can also be located at the preset position of the control system according to the interlocking control, two-wire control or emergency ESD event signal.

Working system: 1) (S2 operates reversibly and intermittently, with 25% connection duration, and connection times ≤ 630 times/hour)

2) (S4 reversible and intermittent operation, 25% switching on duration, 630 times/hour ≤ switching on times ≤ 1200 times/hour)

● Input signal: 1) Analog signal: 4 ～ 20mA DC input impedance 250 Ω

2) Pulse switching value signal ≥ 150ms

3) Profibus DP, HART (optional)

● Output signal: 1) 4-20mA DC load impedance ≤ 750 Ω

2) Profibus DP, HART (optional)

● Mechanical output: 1) Multi turn ≥ 6 turns

2) Angular stroke 0 ～ 90 °

3) Straight stroke ≤ 100mm

● Midway limit: 1) The setting range of open limit is 60% ～ 100%

2) The setting range of closing limit is 0% ～ 40%

● Prohibited running time: adjustable from 0 to 99 seconds

● Power supply: three-phase three wire system, 380V.AC ± 10%, 50Hz ± 1%

● Explosion proof grade: 1) Remote control - intrinsically safe Exib Ⅱ BT4