TL-D series of micro double acting electro-hydraulic  actuator

I. TL-D Series micro hydraulic power unit technical parameters

1. Brief introduction of the function

    This product introduces the German advanced hydraulic control technology, to adapt to the valve electro-hydraulic linkage control and the development of micro hydraulic power unit ;Micro power unit can be divided into AC220V and DC24V power supply options, the performance and quality of the international advanced level.Both opening and closing of double acting power unit TL-D are   driven by oil pressure.The single acting power unit TL-S is turned on or off by the oil pressure, and the other stroke is reset by the spring. Intelligent electro-hydraulic actuator(TJ) can adjust valve opening degree according to 4 ~ 20mA control signal. All the power units mentioned above can realize explosion-proof design.

1）Protection level: IP66 is provided. IP68 can be specially designed.

2）Ambient temperature :-20 ~+80℃

3）Cable interface: sealing cap thread M20*1.5

4）Working pressure :20~110Bar   Maximum pressure :160Bar

5）Working oil :32# hydraulic oil or homogeneous product   

6）Oil tank capacity :300~600cc

      7）Electrical parameters

II. Structure composition of EDHA/ TL-D micro electro-hydraulic actuator

                          1、Valve position indication       2、LPU protective cover　　3、Hydraulic block       4、Pressure measuring joint    

                          5、Hydraulic actuator          　   6、Stuffing box 　　             7、LPU power unit　　8、Valve position indicating   transmission rod       

                          9、Integrated circuit board　     10、 Feedback signal touch block assembly         11、Micro Switch     12、Terminal block

III. Hydraulic working principle of EDHA/TL-D

TL-D hydraulic working principle

The control signal of the valve is from the remote control signal or the local button of the actuator electric control cabinet

1. Opening the valve : the power unit TL-D receives the opening valve signal, and the motor starts the hydraulic pump to provide power oil for the actuator "open valve" oil port until the actuator is fully opened; Then the actuator limit switch sends out the signal to cut off the motor power and sends out the "valve OPEN" signal to the integrated control cabinet.

2. Closing the Valve : power unit TL-D receives the closing valve signal, and the motor starts the hydraulic pump to provide power oil to the actuator "close valve", until the actuator is completely closed; Then the actuator limit switch sends out the signal to cut off the motor power and sends the "valve CLOSE" signal to the integrated control cabinet.

3. Intelligent adjusting valve control: Actuators with signal generator and PLC can adjust the valve opening degree. The actuator 0°~90° stroke position can be adjusted under the 4~20ma control signal.

4. Three-break state valve Position: When the hydraulic unit running in the "three-break" situation (power off, no signal, break pressure), the actuator to keep in place and keep the oil pressure.

5. valve jammed alarm: when get valve open/close valve actuator signals, appear stuck and can't fully open/close valve, the hydraulic unit motor will be cut off   by a preset time relay in the electronic control cabinet and sent a valve jammed alarm at the same time.

6. Emergency local operation: the actuator has an emergency operation interface. In the case of "three breaks", the valve actuator can be opened or closed through a portable emergency hand pump.

IV.   Dimensions and technical parameters

1. EDHA/TL-D series electro-hydraulic actuator(angle stroke)

2.   FYG/ TL-D series electro-hydraulic linkage actuator(Linear stroke)

Ⅵ.   Schematic diagram of electrical wiring

1. Schematic diagram of electrical wiring / DC24 motor unit/ adjust model

2. Schematic diagram of electrical wiring / DC24 motor unit/ on-off model

3. Schematic diagram of electrical wiring / AC220V motor unit/ adjust model

4. Schematic diagram of electrical wiring / AC220V motor unit/ on-off   model

Ⅵ.   Remarks

1.The power unit AC220V is the S3 working system; the DC24V is the S1 working system.

2. Before installation, the hydraulic components such as cylinders, oil pipes and joints must be cleaned without any impurities.

3. The viscosity of hydraulic oil should be 15~68CST. It should be clean and free of impurities. It is recommended to use 32# hydraulic oil.

4. The hydraulic power unit is suitable for horizontal or vertical installation.

5. After starting the operating system for the first time, immediately check whether the oil in the oil tank is sufficient.

6. After the first 100 hours of system use, the hydraulic oil should be replaced and the hydraulic oil should be replaced every 3000 hours.

　Tl-D series of micro double acting electro hydraulic linkage actuators（Download）‍