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CAPV-H-4-20MA-x: Connector Amplifier For Proportional Valves

The 4-20mA Connector Amplifier simplifies control of proportional solenoids by supplying a current proportional to an input control (4-20mA). It accepts 12VDC or 24VDC power supply voltage. This linear solenoid driver utilizes high frequency switching output (PWM) to provide a DC current output. The options for maximum current output include 2 A, 1.2 A or 600mA. A current sensing circuit maintains output current regardless of changes in input voltage and coil resistance. The user can adjust maximum and minimum current. Ramp time, dither frequency and amplitude can also be adjusted to match the application. The unit is available with a DIN 43650 connection to mount directly on the coil. It is also available with 0-10V or 0-5V inputs. A remote mount version is housed in a rugged metal box.


  • 12VDC or 24VDC supply voltage
  • Current sensing circuit maintains output regardless of changes in input voltage and coil resistance
  • Modern technology utilizing high frequency switching output (PWM)
  • Energy efficient design (no heat sink is required)
  • Simple control with a 4-20 mA signal input
  • Mates to a DIN 43650-A plug on a cartridge or block style solenoid valve
  • Reverse polarity protection
  • Short circuit proof (in case of solenoid failure or mis-wiring)
Technical Specifications:Connector Amplifier For Proportional Valves

P/N: CAPV-H-4-20MA-x complete with cable CAPV-4C-yM
Where: x = current output (2A, 1.2A or 600MA)
y = cable length (2 meters is the standard length)
Order Codes:P/N: CAPV-4-20MA-2A-4C-2M (2 Amp max. output )
P/N: CAPV-4-20MA-1.2A-4C-2M (1.2 A max. output)
P/N: CAPV-4-20MA-600MA-4C-2M (600 mA max. output)
Operating voltage (power supply requirement):12 or 24 VDC nominal
Control input signal options:4-20 mA current signal
(0-10 V and 0-5 VDC/0-20 mA/10K potentiometer
control input versions are also available.)
Input resistance:50 Ohms
Range of maximum output current:2A, 1.2A, or 600mA output versions available
Solenoid resistance selection (nominal):Nominal resistance of solenoid coil should comply
Rcoil < (Vpower supply - 1.5 V)/I-max.
Electromagnetic compatibility (EMC):Emission EN 50081-2
Immunity EN 50082-2
Electrical connection:DIN 43650-A
2 m, 4 conductor, unterminated cable (18 AWG)
(Remote mount version with cable available)
Protection class:IP65 when correctly installed with lid, o-ring/washer
and base gasket
Operating conditions:-40 to +85°C (-40 to 185°F)
Dimensions:See datasheet for dimensions
PDF Datasheet: Click icon for PDF datasheet.

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