KOSO 373A actuator

                                                                            Koso 373A series electro-hydraulic actuator

1: Product introduce

Koso 373A series electro-hydraulic actuators are specialized devices designed for rapid action, utilizing an accumulator as the energy storage component to quickly release energy. They feature high-quality pressure sensors for automatic monitoring of the reserve oil pressure and automatic pumping. Powered by AC380V (with neutral) as the driving source, these actuators employ three-phase AC motors and use high-performance, long-life oil-immersed potentiometers for feedback detection. They can accept both DC4～20mA analog control signals and AC220V digital control signals. These actuators enable rapid shut-off or opening upon power failure or signal reception. The hydraulic output of this product utilizes a swing cylinder structure with proprietary technology from KOSO, offering advantages such as compact design, high output torque, and long service life.

2: The functions and characteristics of the 373A series electro-hydraulic actuators include:

1: The control module is composed of advanced integrated circuits with comprehensive functionality.

2: Non-invasive remote operation function: parameters can be adjusted and set without opening the cover, enabling manual operation on site.

3: The control module uses a menu setup for easy and convenient parameter setting and function adjustment.

4: Input signal setting function: allows analog (4-20mA) or digital (220V) control based on working conditions, with independent wiring that does not interfere with each other, both capable of outputting a 4-20mA feedback signal.

5: Valve position display and functional indicator lights: displays input signals and valve positions, includes signal, manual/automatic, normal/reverse action, limit, and fault indicator lights.

6: Calibration function for input and feedback signals to improve control accuracy.

7: Anti-interference function: sets a delay time for reverse actions to avoid reverse shocks.

8: Zero point and travel calibration are convenient and accurate, can be set at any position.

9: Four states for signal loss: fully closed, fully open, self-set (full travel), maintain original position.

10: Electronic limit function: provides in-position contact feedback.

11: Fault alarm function: when the actuator's power supply is cut off, a normally closed contact will open; when there is a fault in the input signal or actuator, a pair of normally open feedback contacts will close, and the motor power will be cut off to protect the actuator.

12: Temperature protection function: automatically activates heating for the oil path block when temperatures fall below -10°C to ensure the oil pump works normally.

13: Advanced hydraulic system: fully enclosed hydraulic power source, integrated modular structure, high efficiency, no leakage, no pollution, resistant to vibration, long lifespan, low maintenance cost.

14: Emergency manual function: standard manual pump for operation in case of power failure.

15: Action status memory function: records cumulative operation time and count, providing a basis for optimization of control and maintenance.

16: Settable automatic oil injection pressure, with an adjustable range for oil pressure.

17: Capable of rapid opening or closing upon signal or power failure.

3：Koso 373 Series electro-hydraulic actuator model meaning

4: KOSO 373A parameter

5: 373A series electro-hydraulic actuator specifications

Note: The table is the standard operating time, if there are special requirements can be replaced by different power of the motor to change.