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EATON DG1 Series Variable Frequency Drives
Eaton directional control valves are used to control the direction and flow of hydraulic fluid in a hydraulic system. They are used in construction equipment, agricultural machinery and manufacturing equipment.
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EWorking Mechanism
- A VFD (variable frequency drive) receives a signal from a process controller or human-machine interface and converts this signal to adjust the frequency of the AC power supply to the motor.
- The VFD is equipped with a user interface, such as a keypad, display and LEDs, that allows the user to program, monitor and control the variable frequency drive.
Features
- They have aluminium / steel construction for structural rigidity and resisting corrosion.
- These directional control valves feature Buna-N seals to resist abrasion and tear.
- They offer leakage of 164 cc/min and can be pilot operated.
Frequently Asked Questions
What is the difference between the EMI filter and the RFI filter?
- EMI (Electromagnetic Interference) filters are used to suppress electromagnetic interference generated by the VFD itself, which can interfere with the working of other electronic components in the same environment.
- RFI (Radio Frequency Interference) filters are used to reduce the amount of electromagnetic interference that is conducted into the VFD from external sources, like radio transmitters.
What is the purpose of a DC choke?
A DC choke is a device that helps to filter direct current (DC) components in the output of a VFD. It helps to suppress the high-frequency switching noise and brings the DC bus voltage to a safe level, thus improving the stability and reliability of the drive.
What is the advantage of conformal coating?
Conformal coating is a thin, protective layer that protects the VFD's printed circuit board (PCB) from environmental factors like moisture, dust and other corrosive substances.
What is the recommended filtration level of Eaton directional control valves?
18/16/13 microns.
What types of fuel are compatible with these directional control valves?
All general-purpose hydraulic fluids complying with MIL-H-5606, SAE 10 and SAE 20 standards are compatible with these directional control valves.
How to clean these directional control valves?
- Turn off the hydraulic power supply and relieve any pressure in the system.
- Remove screws, bolts or fasteners and use a soft-bristled brush or compressed air to remove any dirt, dust or debris from the valve components.
- Dampen a clean & lint-free cloth with a mild cleaning solution.
- Use the damp cloth to wipe down the valve components and rinse the valve components thoroughly with clean water to remove any remaining cleaning solution.
- Use a clean & dry cloth to dry the valve components thoroughly and remove all moisture to prevent corrosion or damage to the components.
- Reassemble the valve according to the manufacturer's instructions and reinstall it in the hydraulic system.
- Restore the hydraulic power supply and verify that the valve is functioning properly.
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