VT-VRPA2-1-11/V0/T1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT-VRPA2-1-11/V0/T1 is an electric amplifier from the VT-VRPA Electric Amplifiers series. It operates at 24 VDC with a power consumption less than 24 VA and supports a power stage current of 2.5 A. The amplifier features a 48-pin DIN 41612 Form F connector and measures 100 by 160 millimeters.
Internal Product Review
The VT-VRPA2-1-11/V0/T1 is a Bosch Rexroth electric amplifier with a 24 VDC operating voltage and a 48-pin DIN 41612 Form F connector. Command handling is impressive in technical applications, with input resistance above 100 kΩ and a ±10 V command output supporting stable proportional control. Low power consumption under 24 VA makes this amplifier an efficient and well-executed choice.
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Product Description:
The VT-VRPA2-1-11/V0/T1 is a plug-in proportional amplifier card produced by Bosch Rexroth Indramat for the VT-VRPA Electric Amplifiers series. Installed in a valve control rack, it translates low-level command signals from a PLC or analog controller into regulated coil current for proportional hydraulic valves. This function provides stable pressure or flow control in industrial machinery without requiring separate amplification hardware.
The card operates from a 24 VDC power rail, and the supply may dip to 18 V during operation. Internal logic draws less than 2 A, while the oscillator for the modulation stage runs at 5.6 kHz to provide valve dither. Each of the four voltage command channels has an input resistance greater than 100 kΩ, and the differential input has a resistance greater than 50 kΩ, minimizing the load placed on upstream signal sources. A dedicated reference output supplies ±10 V with ±2% accuracy for external feedback circuits. The closed-loop monitor provides ±2.5 V with ±2% accuracy to indicate actuator position. Current-mode inputs have a fixed resistance of 100 Ω, while a 10 kΩ ramp input allows acceleration and deceleration times to be adjusted directly. All electrical connections reach the backplane through a 48-pin DIN 41612 Form F connector, and the card has a mass of 0.17 kg.
The power stage supplies up to 2.5 A of regulated coil current, making it suitable for compatible proportional hydraulic valves. Its 100 × 160 mm Eurocard format allows installation in standard Rexroth VT 3000 racks. Overall power consumption remains less than 24 VA, which limits the amount of heat added to the control cabinet. The board can operate at supply levels up to an upper limit of 35 V without damaging the regulation circuitry. A keyed front handle and captive ejector levers support secure insertion and straightforward removal from the rack.
