VT-VRPA2-1-10b/V0/T1 Bosch Rexroth Indramat
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MPN: R900979887
The VT-VRPA2-1-10b/V0/T1 is an electric amplifier from Bosch Rexroth Indramat, part of the VT-VRPA Electric Amplifiers series. The amplifier operates at 24 VDC with a maximum current consumption of less than 2 A and a fuse rating of 2 A medium time-lag. It features a command output signal of ±10 V, actual value signal of ±2.5 V, and comes in a 100 x 160 mm card size with a 48-pin male DIN 41612 F connector.
Internal Product Review
The VT-VRPA2-1-10b/V0/T1 is a Bosch Rexroth electric amplifier that delivers precise control with a ±10 V ±2% command output signal and 2.5 A output stage current. A 24 VDC operating voltage with an 18 to 35 V supply range supports stable integration in standard industrial control systems. This amplifier stands out as a dependable choice for accurate electrohydraulic signal conditioning.
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Product Description:
The VT-VRPA2-1-10b/V0/T1 plug-in card belongs to the VT-VRPA Electric Amplifiers series produced by Bosch Rexroth Indramat. This unit functions as a proportional amplifier for directional or pressure valves, converting reference voltages from a machine controller into accurately metered coil current. By closing the loop between the commanded signal and the actual valve position, it supports precise hydraulic motion in presses, injection molding machines, and similar industrial equipment. The card provides the electronic control needed to regulate hydraulic pressure, flow, or actuator direction according to the incoming command signal.
Its logic and power stages operate from a nominal supply of 24 VDC. Operation is supported from 18 V to 35 V, with a medium time-lag fuse rated at 2 A protecting the power feed. The differential command path presents a 100 Ω current input load and an input impedance greater than 50 kΩ in voltage mode, while the feedback channel returns an actual value of ±2.5 V within ±2%. The card delivers a controlled output current of 2.5 A, shaped by an internal oscillator operating at 5.6 kHz ±10% to minimize hysteresis caused by valve friction. A reference generator provides a command output of ±10 V, matching the potentiometer input limit of ±10 V so external setpoint potentiometers can be connected without additional scaling. These input and output channels allow the amplifier to process controller commands while monitoring the valve response through the feedback circuit.
The amplifier occupies a 100 × 160 mm Eurocard footprint and plugs into a 48-pin male DIN 41612 F connector, providing a secure connection within a compatible rack. Power dissipation remains below 24 VA, so convection cooling inside the cabinet is generally sufficient when airflow around the card is unobstructed. The maximum permitted ambient temperature is 50 °C, and cabinet ventilation must maintain the surrounding air at or below this limit. Peak current draw remains below 2 A, allowing the supply conductors to be sized for a modest electrical load. The compact format and standardized connector also allow the amplifier to share a control rack with other signal-processing cards while preserving access to its command, feedback, and valve-output circuits.
