VT-VRPA1-527-20/V0/PO-IS

The VT-VRPA1-527-20/V0/PO-IS from Bosch Rexroth Indramat represents a high-precision electric amplifier within the VT-VRPA Electric Amplifiers series, engineered for demanding industrial automation environments. This robust unit features short-circuit protection and comprehensive power supply reversal protection to safeguard critical control loops. With a versatile voltage range of 0 to +10V and a dedicated current input of 4 to 20 mA, it accommodates a wide spectrum of command signal formats. The amplifier’s compact design and standard 19" rack compatibility make it an ideal drop-in solution for both new installations and retrofits in factory automation systems.

Technical performance is elevated through advanced electrical characteristics including an input impedance of 100 kΩ, which ensures minimal loading on command sources. The device accepts a dedicated command value for pressure controller: 0-10 V (z12) and supports precise control signal adjustment via slope adjustment for tuning dynamic response. Operators benefit from a broad enable input voltage range of 8.5-40 V and external control slope adjustment options, enabling seamless integration with upstream safety and control architectures. A front plate LED indicator (Green) provides instant status feedback for enable/active states, streamlining troubleshooting and maintenance procedures.

Operational features deliver exceptional adaptability and reliability. Dual pressure sensor interfaces support both 4-20 mA (z14) and 0-10 V/1-6 V (b16) inputs, while a stable reference voltage of 0 V (b18) is provided for consistent signal grounding. On-board sensor power is supplied via +15 V/35 mA (Ri ~25 Ω), ensuring reliable excitation of external transducers. For precise position feedback, the amplifier offers a ±15 V position transducer supply (b30: -15V, z30: +15V). These features combine to minimize wiring complexity, reduce signal noise, and maintain high fidelity in closed-loop control applications.

Integration into complex automation systems is straightforward, thanks to the amplifier’s standardized rack-mount form factor and clear terminal assignments. The VT-VRPA1-527-20/V0/PO-IS interfaces seamlessly with Bosch Rexroth Indramat controller families and third-party PLCs, facilitating rapid commissioning and diagnostics. Its rugged design and extensive protection mechanisms make it particularly well-suited for hydraulic pressure control, valve positioning, and other precision motion tasks in sectors such as manufacturing, processing, and heavy machinery. With its combination of robust safeguards, flexible I/O options, and proven performance, this amplifier delivers a reliable foundation for advanced industrial control solutions.