VT 3000 S 20 by Rexroth, Indramat, Bosch in the VT-3000 Series. The VT-3000 Proportional Valve Amplifier controls proportional valves by converting an input voltage signal proportionally into output current to power proportional solenoids. This VT 3000 S 20 offers a Ramp Time of Factory Assigned, Operating Voltage of 24 VDC + or - 10 %, and a Series of 20. Other features include a Connection Type of 32 pin plug-in Euro card design.