VT-VRPA1-527-10/V0 Bosch Rexroth Indramat
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MPN: 811405095
The Bosch Rexroth Indramat VT-VRPA1-527-10/V0 is part of the VT-VRPA Electric Amplifiers series and operates with a nominal supply of 24 V DC and a typical power draw of 37 Watts. It features a maximum solenoid current of 2.7 Amps and utilizes a DIN 41612-F32 connector type. The unit offers pilot feedback input resistance of 20 kilo-ohms and a setpoint input resistance of 100 kilo-ohms.
Internal Product Review
The VT-VRPA1-527-10/V0 from Bosch Rexroth Indramat is an electric amplifier designed for precise control of pilot valves in industrial hydraulic systems. It supports a nominal supply of 24 V DC and provides a 2.7 A max solenoid current for reliable actuation. The DIN 41612-F32 connector type and compact sizing allow for seamless integration into control panels.
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Product Description:
The VT-VRPA1-527-10/V0 is a plug-in electric amplifier card manufactured by Bosch Rexroth Indramat for the VT-VRPA Electric Amplifiers series. Designed for proportional directional or pressure control tasks, the module converts low-level command voltages into controlled current for NG 6 pilot valves in hydraulic automation. By placing the card in a standardized backplane, system builders can integrate closed-loop control of spool position or pressure without additional discrete electronics.
The amplifier operates from a 24 V DC nominal supply and draws a continuous board current of 1.5 A, so cabinet fusing can be sized accordingly. Under typical conditions, it dissipates 37 W, and the onboard heat sink is sized for that thermal load. Input and output wiring is collected on a DIN 41612-F32 connector, allowing quick replacement without rewiring. A bulk storage network containing a 4700 µF / 63 V DC electrolytic capacitor smooths the supply to limit ripple during rapid spool movements. For external command devices, the card sources 10 mA to a 10 kΩ signal potentiometer, and the internal pot supply is protected by a 100 mA fault output that signals an overcurrent event to the host controller.
The output stage supports a maximum solenoid current of 2.7 A and a maximum solenoid power of 40 VA, allowing the driver to energize high-flow NG 6 pilot valves without saturating the power stage. The analog setpoint channel presents 100 kΩ of input resistance, minimizing burden on remote PLC outputs, while the pilot feedback path is terminated with 20 kΩ to help maintain linear sensor scaling. Additional functions include a 10 mA reference feed for external potentiometers, and the card accepts NG 6 valve connectors. This layout lets the module serve as a compact interface between low-level electronics and proportional hydraulic components.
