Bosch Rexroth VT-VRPA2-1-1X/V0/T1 proportional valve amplifier

Bosch Rexroth VT-VRPA2-1-1X/V0/T1, material number R900979887, is an analog Eurocard amplifier for 4WRE 6 series 2X proportional directional valves with electrical spool-position feedback. It combines differential ±10 V and 4–20 mA command inputs with four callable command values. The T1 execution provides one ramp time.

Nominal supply is 24 V DC within the published 18–35 V DC operating limits. Each clocked output stage has a 0–2.5 A capability; this is not a delivered solenoid-current setting. The valve-specific position controller, current limit and wiring must match the selected valve. Ramp adjustment covers 20 ms–5 s, switchable to 0.2–50 s.

The 100 × 160 mm Eurocard uses a 48-pin DIN 41612 form F connector and operates at 0–50 °C. Card holder, power supply and valve are separate components. The reference is RE30119, April 2013; only the T1 block diagram and relevant adjustment pages are selected. The manufacturer photograph is representative of the series.