I. Product Overview

• Core Function: It integrates proportional flow control and relief functions, providing the minimum pressure and flow required for the operation of actuators. It controls the pump pressure by maintaining the minimum pressure difference according to the load pressure, achieving low energy consumption and energy saving. A built-in temperature compensation mechanism ensures that the control flow is stable and not affected by oil temperature changes.
• Control Mode: It adopts electro-hydraulic proportional control, which is an upgraded version of the EFBG series. It has a built-in control module and does not require an external power amplifier, simplifying the system configuration.
• Structural Feature: It adopts a base plate mounting design, which is easy to integrate into the hydraulic system and convenient for maintenance and replacement.

II. Model Meaning Explanation

III. Main Features

1. Integrated Energy-Saving Design: Combines flow control and relief functions into one, maintaining the minimum pressure difference according to the load pressure, reducing energy consumption and achieving energy-saving operation of the hydraulic system.
2. Stable Flow Control: Built-in temperature compensation mechanism, which ensures that the flow rate remains stable and is not affected by changes in oil temperature and viscosity, improving control accuracy.
3. Dual Flow Versions: Available in two maximum flow versions (60L/min and 125L/min), with a flow adjustment range of 1~60L/min (for 60 version) and 1~125L/min (for 125 version), suitable for different system flow requirements.
4. Easy Configuration: As an upgraded version of the EFBG series, it has a built-in control module and does not require an external power amplifier, simplifying the system structure and reducing installation costs.
5. Base Plate Mounting: Complies with the CETOP D05 installation standard, facilitating integration into the hydraulic system and convenient for later maintenance and replacement.
6. High Control Precision: The hysteresis is less than 3%, and the repeatability is less than 1%, ensuring precise and stable proportional control of flow.

IV. Key Specification Parameters

• Input Signal: DC 5V (maximum adjustment flow corresponds to DC 5V)
• Input Impedance: 10kΩ
• Coil Resistance: 10Ω
• Power Supply Voltage: DC 24V (fluctuation range: DC 21~28V)
• Maximum Power Consumption: 28W
• Minimum Control Pressure: 1.5MPa
• Valve Pressure Difference: 0.6MPa
• Working Medium: Mineral oil, synthetic hydraulic oil (special seal version is required for special media)
• Working Temperature: -20℃~+70℃

V. Application Fields

• Injection Molding Machines: Precisely control the speed of mold clamping, injection, ejection and other actions, achieving energy saving while ensuring control precision.
• Die Casting Machines: Control the mold opening/closing speed and molten metal injection speed, adapting to the pressure and flow changes of the die casting process.
• Construction Machinery: Control the speed of actuators such as excavators, cranes and loaders, improving operation stability and energy utilization efficiency.
• Machine Tools: Adjust the spindle speed and worktable feed speed, ensuring processing accuracy and reducing energy consumption of the hydraulic system.
• Large-Scale Automated Production Lines: Realize synchronous control and speed adjustment of multiple hydraulic actuators, suitable for high-flow and high-precision control scenarios.

VI. Usage Notes

1. The hydraulic system must be thoroughly cleaned before installation to avoid impurities entering the valve body and damaging the spool and sealing components.
2. Regularly check the oil cleanliness; it is recommended to use a filter with an accuracy of 10μm or less to ensure the normal operation of the valve.
3. The power supply voltage should be within the range of DC 21~28V to avoid damage to the built-in control module due to overvoltage or undervoltage.
4. Electrical connections must be shielded to prevent electromagnetic interference from affecting the control signal and ensuring control precision.
5. Regularly check the relief mechanism of the valve to ensure that it can work normally when the system pressure exceeds the set value, protecting the system.
6. If it is to be used with special media such as phosphate ester or water-glycol, a special seal version must be selected to avoid leakage.

VII. Selection Suggestions

1. Select the appropriate flow version (60L/min or 125L/min) according to the maximum flow requirement of the system, and it is recommended that the actual system flow does not exceed 80% of the valve's maximum flow.
2. Confirm that the maximum working pressure of the system does not exceed 24.5MPa to ensure the safe and stable operation of the valve.
3. Check the installation space and interface size, and confirm that it is compatible with the CETOP D05 installation standard.
4. According to the system's pressure adjustment requirements, select the appropriate pressure adjustment range (C type: 1.2~15.7MPa; H type: 1.4~24.5MPa).
5. No additional power amplifier is required, and it is only necessary to match the corresponding DC 24V power supply and control signal to complete the configuration.