Description
A compact, plug-in style, microprocessor-based valve driver designed for use in hydraulic proportional valve applications. TheEGDR-0101A drives a single coil in closed loop control using an independent signal. The control provides a timed ramp on startup and PID closed loop settings that you configure with HF-Impulse an easy-to-use software tool available as a free download atwww.hydraforce.com/electronics. An LED output indicator is located on the front (see Dimensions).
Operation
The controller accepts an input from commonly available analog or digital operator interface devices (AC frequency detector, speed sensor, etc.) The input signal controls the output current, enabling accurate and proportional metering of the hydraulic valve. As the input changes, the PID control varies the output amperage, allowing optimum system response. Built-in diagnostics detect fault conditions that automatically deactivate the output. The controller has an LED output indicator.
Diagnostic Features:
- 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.
Multiple Personalities
The EVDR controller is available in multiple configurations (personalities) to suit the needs of specialized applications. Choose the one that best fits your needs.
EVDR-0101A - General Purpose.
ETDR-0101A - Transmission Apps.
EGDR-0101A - Generator Control.
