VT-VSPA2-1-21/V0/T5 Bosch Rexroth Indramat
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MPN: R901002095
The Bosch Rexroth Indramat VT-VSPA2-1-21/V0/T5 is part of the VT-VSPA Proportional Amplifiers series and operates at 24 VDC with a maximum power consumption of 50 VA. It features a card size of 100 by 160 mm, a 48-pin DIN 41612 F connector, and a fuse rating of 2 A. The amplifier delivers a power stage output of 2.5 A and provides five ramp time presets.
Internal Product Review
The VT-VSPA2-1-21/V0/T5 is a Bosch Rexroth proportional amplifier with 24 VDC operation and a 2.5 A power stage output. Stable command handling is supported by a ±10 V ±2% internal command output and a ±10 V ±2% measurement signal. Strong interface design and consistent regulation make this amplifier a dependable choice for proportional valve control.
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Product Description:
The VT-VSPA2-1-21/V0/T5 is a plug-in proportional amplifier card produced by Bosch Rexroth Indramat within the VT-VSPA Proportional Amplifiers series. Installed in a 19-inch Eurocard rack, the board supplies controlled current to electrohydraulic proportional valves so that a PLC or analog controller can regulate spool position without direct high-power wiring. By converting low-level command voltages into valve drive current, the module forms an interface between machine control layers and the power hydraulics used for force, speed, and pressure regulation in industrial automation.
Physically, the card uses a Eurocard B footprint of 100 × 160 mm and plugs into a 48-pin DIN 41612 F connector that distributes supply lines and signals. The power section draws from a nominal 24 VDC bus and can deliver up to 2.5 A of coil current while maintaining an input impedance of 100 Ω. Internally, the module provides a ±10 V command source with a tolerance of ±2%, accepts a measurement signal within the same range, and returns actual current feedback of ±2.5 V to the host controller. Low-level status paths include a regulated output of 25 mA and a ready output of 50 mA. When the supply falls below the lower limit of 18 V, the amplifier disables the power stage to protect the connected hardware.
Total demand on the cabinet power supply is limited to 50 VA, and an onboard miniature fuse rated at 2 A isolates the board during fault conditions. Dynamic response can be tuned through five selectable ramp times; the ramp generator receives the input through an impedance of 10 kΩ, so upstream controllers are not heavily loaded. The amplifier remains functional up to the upper voltage limit of 35 V, beyond which overvoltage circuitry interrupts the coil output to prevent thermal damage. These protective functions help maintain stable valve operation when the supply voltage fluctuates within the permitted range.
