Product Description:

The VT-VSPA1-1-1X-005 is a plug-in proportional amplifier card produced by Bosch Rexroth Indramat for the VT-VSPA Proportional Amplifiers series. Installed in 19-inch racks, the card converts low-level command voltages into controlled solenoid currents so hydraulic valves can follow an electrical reference within automated machinery. By integrating signal conditioning, current regulation, and protective elements on one Eurocard, the module simplifies cabinet wiring and provides repeatable valve performance in production lines, test stands, and other closed-loop motion or pressure control tasks. It is suited to applications where stable control of pressure, flow, or actuator movement depends on consistent valve current.

This board draws an operating voltage of 24 VDC from the system supply, yet it will continue to function down to 22 V and up to 35 V before supply supervision disables the output. A galvanically isolated converter produces an internal ±9 V regulated rail for the onboard electronics. Input protection is provided by a 2.5 A slow-blow fuse, and peak demand remains within 1.8 A, giving a maximum power uptake of 50 VA. The command monitor presents the valve current as 6 V at full scale, while the current test socket follows a 1 mV = 1 mA ratio so the loop value can be checked with a standard meter. Overall mass is only 0.1 kg, reducing mechanical loading on card guides.

The Eurocard format measures 100 x 160 mm, and the front plate height is 128.4 mm. Rack allocation is minimized because the populated side occupies 3 TE while conductors on the soldering side extend only 5.08 mm. Electrical interfacing is handled by a 32-pole male, DIN 41612 D connector, matching standard backplane wiring schemes. Command input channel 2 presents a resistance of 100 Ω, allowing direct connection to PLC analog outputs without excessive load. The layout supports orderly installation in multi-axis valve racks and helps keep backplane wiring consistent across different machine sections.