Product Description:

The VT-VSPA2-1-1X-T1-001 is a proportional amplifier card produced by Bosch Rexroth Indramat and belongs to the VT-VSPA Proportional Amplifiers series. Installed in 19-inch subracks, the card converts voltage references from a motion controller into conditioned current for spool-type proportional valves, enabling closed-loop position or pressure regulation in hydraulic automation systems. In field applications, the amplifier processes command, actual, and feedback signals while supervising supply readiness and fault status for the connected axis.

The module is designed for a nominal supply of 24 VDC, and the internal circuitry remains functional down to 18 V while tolerating surges up to 35 V. A front-side fuse rated at 2 A disconnects the board if the load exceeds permissible limits. The power stage can deliver 2.5 A of controlled output current to the valve coil, so the valve can be driven without exceeding typical thermal limits of NG6 actuators. With a fixed input impedance of 100 Ω, the card accepts differential voltage commands of ±10 V and reproduces them as regulated ±10 V monitor signals for diagnostics. An independent ±2.5 V channel provides an actual-value output for loop calibration.

Mechanical dimensions follow the Eurocard format, and the board footprint measures 100 × 160 mm with a front panel height of 128.4 mm for direct insertion into DIN-rail-mounted cases. A 48-pin DIN 41612 Form F connector routes supply, command, and valve lines, and its keyed housing helps reduce wiring errors during service. Once supply conditions are stable, the READY terminal sources 50 mA to signal downstream controllers that the power stage is active. Because the regulated monitoring output shares the same ±10 V tolerance as the command channel, it simplifies sensor loops that need a fixed reference. The unit weighs 0.17 kg, allowing dense stacking of multiple axes without imposing significant load on the rack enclosure.