7AI 11AI 13AI 14AI Electric actuator

Overview of 7AI 11AI 13AI 14AI Electric actuator

7AI 11AI 13AI 14AI Electric actuator are a new generation of intelligent, digital and multi-functional electric actuators developed by our company on the basis of introducing A and M series products from British ROTORK company and using today's ultra-large-scale integrated circuits. .

Product implementation standard: Q/YXBM 470 -2006 "AI, MI Intelligent Electric Actuator and Flameproof Intelligent Electric Actuator".

The working principle of AI and MI intelligent electric actuators:

AI and MI series intelligent electric actuators are driven by three-phase asynchronous motors, decelerated by worm gears, and drive the hollow output shaft to output

output torque. The reducer has a manual/electric switching mechanism. When the switching handle is in the manual position, the handwheel drives the hollow output shaft to rotate through the clutch; when the electric operation is performed, the switching mechanism will automatically fall back to the electric position, and the clutch and the worm gear are engaged, driven by a three-phase motor. The hollow output shaft rotates.

The rotation of the output shaft of the actuator is transmitted to the Hall effect pulse sensor through the speed-increasing mechanism, and the axial force generated by the axial force of the motor worm

The displacement is transmitted to the mechanical torque control mechanism (switch mechanism) to realize the control of valve position and torque.

The intelligent controller of the electric actuator accepts standard analog current control signal or switch control signal or bus signal,

The output shaft of the mechanism is positioned at the position corresponding to the input signal; it can also be positioned at the position preset by the control system according to the interlock control, two-wire control or emergency ESD event signal.

Main features of AI and MI intelligent electric actuators:

Classic mechanical torque protection device, stable and reliable work

Hall effect pulsed sensor with high accuracy and strong adaptability

The use of ultra-large-scale integrated chips enables the actuator to have powerful functions

Chinese and English menus are available. It can be set and debugged through the remote control, and the operation is simple and convenient

Non-invasive design - adopts double seal structure, no through-shaft design in the shell,

There is no need to open the cover of the control box during commissioning, and the protection level reaches IP68

Working system: 1) AI (S2 reversible, intermittent operation, 25% connection duration, connection times ≤ 630 times/hour)

2) MI (S4 reversible, intermittent operation, 25% continuity rate, 630 times/hour≤connection times≤1200 times/hour)

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

2) Pulse switch signal ≥150ms

3) Profibus-DP, HART (optional)

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

2) Profibus-DP, HART (optional)

Mechanical output: 1) AI multi-turn type ≥6 turns

2) MI multi-turn type ≥6 turns

3) AI angular stroke 0～90°

4) MI angular stroke 0～90°

5) MIL straight stroke ≤100mm

34～8000Nm

17～544Nm

300～60000Nm

116～6884Nm

7.94～41.4kN

Basic error: 1) AI, MI multi-turn electric actuator ≤±1%

2) AI, MI angular stroke electric actuator ≤±1%

3) MIL straight stroke electric actuator (stroke≥25mm)≤±1%

dead zone:

0.1～9.9% adjustable (default setting is 0.5%)

technical parameter

Halfway limit:

1) The setting range of the open limit is 60%～*

2) The close limit setting range is 0%～40%

Mechanical clearance: of 7AI 11AI 13AI 14AI Electric actuator

1) AI, MI multi-turn electric actuator ≤1°

2) AI, MI angular stroke electric actuator ≤1°

3) MIL straight stroke electric actuator (stroke≥25mm)≤1mm

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 ExibⅡBT4

(Explosion-proof type 2) Actuator——Explosion-proof type ExdⅡBT4

Output contact capacity: 250V.AC, 5A; 30V.DC, 5A (bus products are 220V.AC, 0.5A; 30V.DC, 1A)

Environmental conditions of 7AI 11AI 13AI 14AI Electric actuator

1) Ambient temperature: -25℃～+70℃ (flameproof type is -20℃～+60℃)

2) Relative humidity: 5%～95%

3) Atmospheric pressure: 86～106kPa

4) Air medium: no corrosive gas in the surrounding air

Anti-interference index of 7AI 11AI 13AI 14AI Electric actuator

1) External magnetic field ≤400A/m, 50Hz

2) Common mode interference 250V, 50Hz

3) Serial mode interference: AC signal with an effective value of 1V, frequency of 50Hz, phase of 0 to 360°

4) Electrostatic discharge: 4kV

5) Electric fast transient pulse group: power supply terminal 1000V; signal input terminal: 500V

6) Radio frequency interference: frequency 80～1000MHz, test field strength 3V/m, distance 1m

7) Surge interference: 1kV