VT-VSPA1-1-1X-004 Bosch Rexroth Indramat
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MPN: R900966500
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The Bosch Rexroth Indramat VT-VSPA1-1-1X-004 proportional amplifier is part of the VT-VSPA Proportional Amplifiers series and has a card size of 100 by 160 mm. It operates with an input voltage range from 22 to 35 VDC, supports a maximum current consumption of 1.8 A, and weighs 0.1 kilograms. The amplifier uses a 32-pin male DIN 41612 D connection and features a regulated output current of ±25 mA.
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Product Description:
The VT-VSPA1-1-1X-004 is a plug-in proportional amplifier card produced by Bosch Rexroth Indramat for the VT-VSPA Proportional Amplifiers series. Installed in a valve controller rack, the board translates low-level command voltages into regulated coil currents so proportional directional or pressure valves can track reference signals with repeatable accuracy. On-board power conditioning, monitoring loops, and trimming potentiometers allow the module to bridge a PLC analog channel to the inductive load of a solenoid without extra interface hardware in industrial automation systems.
Power is supplied at 24 VDC, and the board is protected by a 2.5 A T fuse that opens only under sustained overloads. During maximum demand, it draws 1.8 A, while an internal regulator delivers ±9 V with ±1% accuracy to the control circuitry. Closed-loop drive capability lets the output source or sink ±25 mA, covering the current range required by many proportional solenoids. Command Input 1 reaches full modulation at 9 V, allowing a 0–10 V controller to use nearly its entire span while still leaving offset margin. Termination is through a 32-pin male DIN 41612 type D connector, so the Eurocard can slide directly into a standardized backplane.
At 100 × 160 mm, the card matches Eurocard B-height dimensions, permitting dense stacking without obstructing front-panel access. Overall energy demand peaks at 50 VA, easing cabinet ventilation design. For diagnostics, the command monitor output is scaled so that 6 V = 100 %. A current monitor provides 1 mV per mA for quick scope checks, and Input 2 accepts a 0–10 V signal through a 100 Ω impedance, making it suitable for dither or secondary control loops. Internal converters remain stable from 22 VDC to 35 VDC, and the module weighs only 0.1 kg, minimizing mechanical stress on the backplane.
Frequently Asked Questions about VT-VSPA1-1-1X-004:
Q: What is the operating voltage range for the VT-VSPA1-1-1X-004 amplifier?
A: The VT-VSPA1-1-1X-004 operates with a supply voltage range from 22 VDC to 35 VDC.
Q: What type of electrical connection does the VT-VSPA1-1-1X-004 use?
A: This proportional amplifier uses a 32-pin male, DIN 41612 D connection type.
Q: What is the maximum power consumption for the VT-VSPA1-1-1X-004?
A: The maximum power consumption of the VT-VSPA1-1-1X-004 is 50 VA.
Q: What is the regulated output current for the VT-VSPA1-1-1X-004?
A: Regulated output current is provided at ±25 mA for precise control.
Q: What fuse rating is required for the VT-VSPA1-1-1X-004?
A: The VT-VSPA1-1-1X-004 features a fuse rated at 2.5 A T for circuit protection.
