A compact, plug-in style, microprocessor-based valve driver designed for use in hydraulic proportional valve applications. The EVDR-0101A drives a single coil to a user-defined metering profile using an independent signal. The profile provides either a straight-line or multi-sloped output that you configure with HF-Impulse: an easy-to-use software tool available as a free download at www.hydraforce.com/electronics. An output LED indicator is located on the front.
The controller accepts an input from commonly available analog or digital operator interface devices (joystick, potentiometer, sensors, etc.) The input signal drives the output current, enabling accurate and proportional metering of the hydraulic valve. As the input changes, the output follows the defined metering profile, allowing optimum system response. Built-in diagnostics detect fault conditions that automatically deactivate the output. The controller has an LED output indicator.
- Any input below 8.5 Vdc causes the controller to default to safe mode of "valve off."
- The driver output drops and holds at the inactive stand-by condition. Any short or open circuit condition is automatically detected as an error. When the fault is corrected, the controller returns to standard operation.
The EVDR controller is available in multiple personalities to suit the needs of specialized applications. All are configured with HF-Impulse software. Choose one that best fits your needs.
EGDR-0101A: Generator applications
EVDR-0101A - General purpose valve driver
ETDR-0101A - Transmission/clutch profile applications