Product Description:

The VT-MSPA1-150-1X-V0-0 is a single-channel driver module produced by Bosch Rexroth Indramat within the VT-MSPA Drives series. It clips onto a TH 35-7.5 DIN rail and interfaces with proportional solenoids used in industrial motion and pressure control loops, converting low-level commands into regulated coil current. Installation is through six screw terminals that accept both the supply and reference lines, so no additional plug connectors are required. Its compact form factor allows current control to be placed close to the actuator, which helps minimize wiring losses inside automated machinery.

The module operates from a nominal supply of 24 VDC (+40%/-10%), which keeps it functional down to the 21 V lower limit and up to the 35 V upper limit without recalibration. Internally, the input stage presents an impedance of 100 kΩ, ensuring the command source is only lightly loaded. The analog-to-current converter follows a scale of 1 mV = 1 mA, so a 700 mV reference drives the coil to the maximum output of 700 mA. A fixed bias current of 200 mA prevents stick-slip when no demand signal is present. Output ripple is limited by pulse control at 100 Hz ±10%, while overall power draw stays below < 25 VA and does not exceed the 1 A current limit on the 24 V line. The module is intended for solenoids with a 19.5 Ω resistance, allowing full stroke without overheating.

The housing measures 25 x 79 x 85.5 mm, which supports compact installation in a control cabinet. At only 0.15 kg, the unit adds very little static load to light aluminum backplates. The housing is rated IP20, which provides protection against accidental finger contact and requires installation inside a sealed cabinet for dusty or wet areas. Its slim depth preserves airflow paths around neighboring devices and helps heat dissipate without extra fans.