VT-VSPA1-10-10/V0/0 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT-VSPA1-10-10/V0/0 is part of the VT-VSPA Proportional Amplifiers series and uses an operating voltage of 24 VDC, with a voltage range from 18 V to 35 V. This amplifier has a card size of 100 x 160 mm, a maximum current consumption of 2 A, and weighs 0.15 kg. It features a 48-pin male DIN 41612 connector and supports an output stage current up to 1.9 A.
Internal Product Review
The VT-VSPA1-10-10/V0/0 is a proportional amplifier with 24 VDC operating voltage and a compact card format for efficient panel integration. A 1.9 A max output stage current and a regulated +10 V ±2% output support stable, accurate control in hydraulic applications. The amplifier stands out as a dependable choice for precise proportional valve command performance.
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Product Description:
The VT-VSPA1-10-10/V0/0 is a plug-in proportional amplifier card from Bosch Rexroth Indramat in the VT-VSPA Proportional Amplifiers series. Installed in a 19-inch Eurocard rack, the module conditions low-level command signals and generates controlled valve currents so hydraulic actuators can operate with repeatable force and position. By converting power from a 24 V control supply into a stable current output, the card links PLC analog outputs with proportional directional or pressure valves used in automated machinery. This arrangement allows low-power control commands to regulate hydraulic valve operation without a separate external amplifier.
The amplifier runs on a nominal supply of 24 VDC, allowing it to share the same low-voltage bus that powers most machine I/O boards. An internal oscillator drives the pulse-width modulator at 330 Hz, allowing responsive spool movement while limiting interference with typical sensor signals. Command inputs terminate on a high-impedance network with a 100 kΩ load, so upstream controllers experience minimal loading and can use voltage or current sources. The output stage can deliver up to 1.9 A, furnishing enough coil current for medium-sized proportional valves without external boosters. For auxiliary transducers, the card offers a stabilized reference current of 25 mA, simplifying the wiring of compatible loop-powered pressure sensors.
The electronics derive signal accuracy from a precision reference of +10 V, maintained within ±2% to support consistent gain settings in servo loops. Even at full load, the card draws only 24 VA, which limits its contribution to heat generation inside the control cabinet. Protective circuitry supports operation from the 18 V undervoltage threshold up to 35 V, reducing the risk of control dropout during brief supply fluctuations and protecting components against accidental overvoltage. The Eurocard measures 100 × 160 mm, fits standard rack guides, and uses a 48-pin DIN 41612 male connector. Its plug-in format provides direct mechanical alignment and electrical contact when the card is inserted into a compatible 19-inch rack.
