3A RSD Series 3 AMP Solenoid Driver

User Selectable Input, 0-3A or 0 to +/-3A Output 

The 3 Amp Solenoid Driver simplifies control of proportional solenoids by supplying a current proportional to a user selectable input control. It is suited for industrial applications interfacing with a PLC. The available inputs include: 0-2.5V, 0 to +/- 2.5V, 0-5V, 0 to +/-5 V, 0-10V, 0 to +/-10V, 0 to +/-20V, 4-20 mA, and 0-20 mA. The controller accepts power supply voltages from 8 to 28 VDC. This linear solenoid driver utilizes high-frequency switching output (PWM) to provide a DC current output. Output is user selectable as 0 to 3 Amps or 0 to +/- 3 Amps. A current sensing circuit maintains output current regardless of changes in input voltage and coil resistance.

The user can adjust PWM frequency, maximum current, minimum current, a superimposed dither frequency and amplitude using single turn trim potentiometers. A sine, square or triangle dither waveform is user selectable. An auxiliary output permits monitoring of current output with a voltmeter with a scale of +/-1V/1A. The unit is available as a stand alone PCB Board or as a Packaged Driver enclosed in an IP67 rated metal housing with cable or strain reliefs. It is designed for mounting close to the valve. Other versions are available with a 2A maximum current output including a remote mount driver with filter and various DIN 43650 coil mount models.


  • Suitable for industrial hydraulic applications with PLC interface
  • Accepts a wide range of power supply inputs from 8 to 28 VDC
  • Selectable command input (0-2.5V, 0 to +/-2.5V, 0-5V, 0 to +/-5 V, 0-10V, 0 to +/-10V, 4-20 mA, 0-20 mA)
  • Modern technology utilizing adjustable high frequency switching output (PWM) – adjustable to suit individual valves
  • Maximum current output is regulated and adjustable
  • Output is user selectable for 0-3A or 0 to +/-3 Amps
  • Maximum current adjustment does not affect minimum current setting (all trim pots are multi-turn)
  • Current sensing circuit maintains output current regardless of changes in supply voltage and coil resistance changes with temperature
  • Auxiliary output permits monitoring of current output with a voltmeter (+/- 1V/1A)
  • Energy efficient design (no heat sink is required)
  • Superimposed dither is user adjustable for frequency, amplitude and waveform (sine, square or triangle)
  • LEDs indicate Power OK and No Load condition
  • Electronic limiting circuit means no internal fuses
  • Short circuit proof
  • Stand alone PCB card with screw terminal connections or Metal box version carries IP67 rating and is available with 1.5 meters of shielded cable or 3 connectors
  • Metal box version with strain reliefs permits user to wire into screw terminals inside
  • Designed for mounting close to the valve