Product Description

The VT-MSPA2-1-10-V0-0 is a modular amplifier designed for use with proportional valves. It is especially designed by Bosch for control of direct operated proportional directional valves without position feedback. The amplifier requires 24 Volts DC input. The power supply unit on the VT-MSPA2-1-10-V0-0 includes a making current limiter. This supply module provides all the negative and positive voltages required internally by the amplifier. The enable function enables the power output stages and forwards the internal command value signal to the ramp generator. An LED on the front plate displays the enable signal. If enable is connected, the internal command value is changed (with any kind of command value presetting) by the set ramp time. Therefore a controlled valve does not open abruptly. The power output of the VT-MSPA2-1-10-V0-0 is fed to a solenoid.

The peak solenoid current per output is 2.7 Amps. The output stages on the VT-MSPA2-1-10-V0-0 are protected against short-circuit events. The solenoid conductor is monitored for cable break as well as over-current of the output stage. The ramp generator on the VT-MSPA2-1-10-V0-0 limits the incline of the control output. The downstream step functions and amplitude attenuators do not extend or shorten the ramp time. Connections on the VT-MSPA2-1-10-V0-0 are made through 12 screw terminals. The amplifier protection class, as per EN 60715, is IP20. The amplifier module dimensions are 40 x 79 x 85.5 millimeters. The optimal working temperature for the VT-MSPA2-1-10-V0-0 module is 0 to 50 degrees Celsius. The unit weighs 140 grams and mounts on a top hat rail. Any connections on the module must only be made when it is switched off. The distance between the amplifier and any radio units must be at least 1 meter.