Product Description:

The VT-MSPA1-50-1X-V0 is a single-channel proportional drive card manufactured by Bosch Rexroth Indramat for the VT-MSPA Drives series. Installed inside a control cabinet, the board translates an external command voltage into a regulated current for one proportional solenoid, allowing precise actuation of valves or similar loads in automated machinery. By integrating conditioning electronics, current monitoring, and overload protection on one compact card, it reduces wiring effort and provides predictable force or flow control in hydraulic and pneumatic circuits.

Its command interface accepts an analog reference up to +10 V, and the high input resistance of 100 kΩ prevents loading of PLC or motion-controller outputs. Internally, the circuit operates from a nominal 24 VDC supply; functional limits are 21 V on the low side and 35 V at the high end, so the power bus can tolerate moderate fluctuations. Continuous board demand is only 2 A, translating to a maximum apparent power of 50 VA, which eases sizing of cabinet power supplies. The card recognizes step changes in the command up to 50% per control cycle and can over-command to 110% when fast stroke speeds are required. A built-in zero-point adjustment of ±10% compensates for valve tolerances, and an electronic overload fuse disconnects the output when faults are detected.

For mechanical integration, the module slides onto a TH 35-7.5 DIN rail and occupies only 25 x 79 x 85.5 mm, preserving panel space in multi-axis systems. Environmental protection is rated at IP 20, making it suitable for clean, ventilated enclosures while still guarding against accidental finger contact. The single output stage can deliver up to 2.5 A of solenoid current, enabling direct drive of medium-size proportional valves without external amplifiers. This arrangement suits compact cabinet installations where one proportional valve must be controlled directly from the card.