Product Description:

The VT-MSPA2-20-A5-000-000 is a plug-in drive card produced by Bosch Rexroth Indramat for the VT-MSPA Drives series. It regulates current for two proportional solenoids from a 24-volt industrial supply, enabling precise actuation of hydraulic or pneumatic valves in automated machinery. By converting low-level command signals into controlled coil power, the board links a PLC or motion controller to the field actuator. With its spring-type terminals and compact form factor, the module fits inside crowded control cabinets where wiring density is critical.

It is designed around a nominal supply of 24 V; line fluctuations are filtered so residual ripple stays below 2.5 Vpp. The board limits total power draw to 48 W and a steady input current of 2 A, protecting upstream supplies. A high input resistance of 200 kΩ prevents loading the voltage command, and a replaceable 3.15 A time-lag fuse guards the inlet against overcurrent faults. Twelve spring terminals provide separate points for command, feedback, and supply conductors, while the circuit energizes two onboard power stages that each ramp to 2.7 A under user control. Switch-on current peaks at 4 A and the electronics become operational within the specified 1-second startup time, supporting fast machine cycles.

With a protection category of IP20, the card is intended for mounting inside an enclosed panel where basic touch protection is already provided. Each channel can deliver up to 2.7 A to its solenoid, provided the connected coil presents at least 1000 Ω to the command path, keeping the amplifier in its linear range. An upper supply tolerance of 36 V allows use with battery-backed or lightly regulated sources. Despite dual power stages and onboard filtering, the assembly weighs only 0.14 kg, easing DIN-rail installation in densely populated cabinets.