A compact plug-in style, microprocessor-based valve driver designed for use in hydraulic proportional valve applications for clutch engagement, "hot shot" coil saver and soft start motor applications. It can also operate in timer-based applications (no input or input only to start a timer). TheETDR-0101A drives a single coil to a user-defined timing profile using a digital trigger. The profile provides a stepped output which 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.
The controller uses a digital input to start the timing sequence. As the time progresses, the output follows the defined metering profile, allowing optimum system response. You can configure six distinct time periods with corresponding output currents. The driver can apply a ramping rate when the digital input is turned off. 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 (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 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.