Product Description:

The VT-VRPA2-1-1X/V0/T1 is a proportional amplifier card produced by Bosch Rexroth Indramat within the VT-VRPA Electric Amplifiers series. Installed in hydraulic servo systems, it converts low-level voltage references from a machine controller into regulated coil current for proportional valves. This allows closed-loop position or pressure regulation in industrial automation equipment.

This module receives a differential command signal of ±10 V and modulates the output while being powered from a single 24 VDC logic rail. All electrical terminations use a rugged 48-pin connector plug that mates with Form F backplane sockets. Process signals are exchanged over an analog interface, which simplifies integration with legacy PLC hardware. The circuitry is built on a printed circuit board to keep the card compact and support stable thermal performance in densely packed enclosures.

A sequencing section provides 4 independent command call-ups that can be selected by external contacts, and they share a single acceleration or deceleration gradient defined by the lone ramp generator, noted as 1. The power stage can drive up to 2 proportional solenoids simultaneously, supporting bidirectional valve spools without additional boards. Mechanical mounting remains flexible because the card slides into holders or open-frame slots built for 19-inch racks. An internal feedback network allows position signals from transducers to be summed with the command channel for closed-loop correction without external computing.

Wake Industrial offers a 1-year warranty on this amplifier. Same-day shipping is available for orders. The chat tool available on the website can be used for questions about type codes, error indicators, or specifications.