Product Description:

The VT-MSPA1-1-1X-V0-0 module is produced by Bosch Rexroth Indramat as part of the VT-MSPA Drives series. It is a compact electronic unit that converts a 24-volt supply into a regulated current for proportional solenoid actuators used throughout automated machinery. By shaping the coil current rather than merely switching it, the device lets motion controllers position hydraulic or pneumatic elements with repeatable force, providing stable process variables for assembly lines, presses, and material-handling systems that depend on finely metered fluid power.

This driver operates from a nominal supply of 24 VDC, remains functional down to 21 V, and tolerates excursions up to 35 V, protecting the control circuit during brownouts or regenerating loads. Peak supply demand is limited to < 1.3 A, which curbs wiring size and thermal rise, while apparent power stays under < 50 VA so the unit fits comfortably on low-capacity 24-volt busbars. Solenoid windings with 5.5 Ω resistance can be driven directly, and an internal zero-point trimmer offers ±25% offset to center a valve at rest. Compact dimensions of 25 mm width, 79 mm height, and 85.5 mm depth allow dense cabinet layouts without obstructing neighboring components.

During operation, the amplifier can deliver up to 1.9 A of controlled coil current, enabling full stroke on medium-power valves. A built-in monitor output follows a linear ratio of 1 mV = 1 mA, allowing live current to be verified with a multimeter. The housing carries an IP20 rating for finger-safe protection when the device is snapped onto a Top Hat Rail TH 35-7.5 inside an enclosure. Six screw terminals simplify field wiring, the 100 kΩ command input minimizes load on upstream analog sources, and the overall form factor leaves clearance for airflow and service access.