VT-MRPA1-151-1X/V0/0

The VT-MRPA1-151-1X/V0/0 is an electronic interface card produced by Bosch Rexroth Indramat for the VT-SWMA Modules series. It provides signal adaptation and power amplification between a PLC and a proportional flow-control valve, allowing precise hydraulic flow regulation in presses, test rigs, and general automation equipment. By combining spool-position conditioning with solenoid drive circuitry on a single board, the unit simplifies panel wiring and setup while occupying minimal space inside the control cabinet.

The card is factory-matched to 2FRE10-4X and 2FRE16-4X proportional throttle valves, so its current range and ramp functions correspond to the magnetic characteristics of those actuators. A stabilized control rail of 24 VDC supplies the onboard power stage; this low-voltage input permits direct connection to standard machine power supplies. Field conductors connect through screw terminals, providing vibration-resistant clamping without requiring special crimp contacts. The housing clips onto standard DIN rails, allowing the card to be positioned beside relays, fuses, and other control hardware. This mounting arrangement conserves cabinet space and provides direct access to the wiring points during routine inspection and system configuration.

The self-contained module incorporates a single output stage that drives one solenoid rather than using the duplicate channels found on multipoint amplifiers. Its internal potentiometric circuit accepts an analog transducer input and routes the corresponding signal to the control circuit, enabling closed-loop operation with integrated position feedback. This feedback path allows the controller to monitor spool movement and correct deviations between the command signal and the valve position. The unit weighs 0.23 kg, so it places minimal load on the mounting rail and surrounding control-panel structure. Its compact format also leaves more room for adjacent terminal blocks, protective devices, and related hydraulic control components within the enclosure.