Description
DKJ type electric actuator is the execution unit of DDZ type electric unit combined detection and adjustment instrument. it accepts regulation. The signal of the transmission unit can automatically complete the adjustment task, and is widely used in power stations, metallurgy, chemical industry, petroleum, building materials, light industry, water treatment, urban construction and other industrial sectors.
The automatic adjustment system of the DKJ type electric actuator can realize the manual and automatic non-disturbance switching of the adjustment system after it is equipped with the DFD-05, DFD-07 or DFD-09 type II (DFD-0500 DFD-0700DFD-0900 III type) electric operator.
CF: Servo amplifier SD: Servo motor J: reducer
DFD: Electric Manipulator WF: Position Transmitter
DFD-05
DFD-07
DFD-09
The product position transmitter adopts a new type of sensing element, the structure design is novel, and the constant current characteristics, output current accuracy and reliability are greatly improved compared with differential transformers. In recent years, with the rapid development of component technology, the actuator has now been modularized, replacing the discrete component structure. Its reliability and stability have been improved compared with the original structure, and it has the advantages of shock resistance, corrosion resistance and oxidation resistance. Etc. Except for explosion-proof products, all are equipped with terminal electrical limit switches to meet the needs of user adjustment.
Electric operator customization
The DFD series electric operator enables the auxiliary control device of the industrial process measurement and control system terminal control unit. It can complete the manual automatic working state switching of the electric actuator, remote operation and automatic tracking without disturbance switching. On the panel of the electric operator there is a working status indicator and a two-pin ammeter showing the regulator output current and the actuator feedback current. The DFD-07 electric operator can also output the limit relay signal in the automatic working state, and cooperate with the electric servo amplifier to realize the electrical limit of the electric actuator.
Type | Capacity A | Electric position-limiting function | |
0-10mA | 4-20mA | ||
DFD-05 | DFD-0500 | 2 | Yes |
DFD-07 | DFD-0700 | No | |
DFD-09 | DFD-0900 | 5 | Yes |
Use conditions
►Dynamic conditions
Single alternating current
Voltage: 220V
Frequency: 50Hz ± 1%
► Environmental conditions
Temperature: 0 to 50 ° C
Relative humidity: 10% to 70%
Atmospheric pressure: 86 ~ 106KPA
Main Technical Parameters
1. Input signal: Type II 0-10mA DC; Type III 4-20mA DC
2. Input channel: 3
3. Input channel impedance: Type II 200Ω; Type II 250Ω
6. Limit of basic error:±2.5%
7. Dead zone:≦3%
8. Damping characteristic: ≦3 half cycles
9. Return difference: ±1.5%
10. Power supply voltage: 220V (±10%,±15%) at frequency 50Hz
11. Service environment temperature:
Actuator:-10~+55°C or -25~+70°C; Amplifier:0~+50°C
12. Relative humidity of service environment:
Actuator:≦95%; Amplifier: 10%-70%
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