DKZ series electric actuator are the terminal control device of industrial process survey and the control system, changing the system's control signal into angular displacement, linear displacement of output axle, the position of valve and other regulating units. The main purpose is to enable the controlled medium to work well under the regulated system conditions.
The electric actuator is divided into the proportion type and integral type according to the controlling type. The proportion actuator is made up of electric servo amplifier and integral type actuator that can compare systematic control signal with the feedback signal (closed-loop control) of output axis so as to change the travel route and has proportion relations with the output axis signal. The integral actuator consists of servo motor, reducer and position transmitter. Coordinating with motor operator, it can control valve or other regulating units from long distant.
Main technical performance
1. Input signals: mode II: 0~10 mA, DC; mode III: 4~20 mA, DC
2. Input passages: 3
3. Input channel resistance: mode III: 250Ω, mode II: 200Ω
4. Output thrust: see dynamic parameter
5. Whole travel time: see dynamic parameter
6. Basic error: ±2.5%
7. Dead band: ≤3%
8. Damping characteristic: ≤ a half and three cycles
9. Return difference: 1.5%
10. Voltage of the power supply: 220V(+10%,~15%) frequency: 50HZ
11. Temperature of the operating environment:
Actuator: -10~+55°Cor -25~+70°C
Amplifier: 0~+50°C
12.Relative humidity of the operating environment:
Actuator: ≤95%
Amplifier: 10%~70%
