Product Description
The Bosch VT-MSPA2-200-1X-V0-0 is an amplifier module. In combination with the Bosch monitoring module VT-MUXA2-2, the amplifier is suitable for controlling explosion-proof proportional directional valves without electric position feedback, types 4WRA...XE, 3DREP 6...XE and 4WRZ...XE. Amplifier features include command value input ±10 Volts (differential input), ramp generation with separately adjustable "up/down" ramp times, characteristic curve correction by means of separately adjustable step heights, release input, reverse polarity protection for the voltage supply, and power supply with DC/DC converter without raised zero point for the internal supply. The VT-MSPA2-200-1X-V0-0 amplifier module is not subject to the directive 94/9/EC (ATEX directive). The amplifier modules installs onto top hat rails according to EN 60715. The electrical connection is established via screw terminals. The amplifier modules have a power supply unit with switch-on current limitation. This unit supplies all internally required positive and negative supply voltages.
The switch-on current limitation prevents high switch-on current peaks. The power output stage creates the clocked solenoid current for the proportional valve. The rated solenoid current is 1000 mA per output. The output stage is protected against short-circuits. The output stages are turned off in case of an internal fault signal or if the release is missing. The modules operates at 24 Volts DC input but accepts voltages between 18 and 35 Volts DC. The peak power consumption is 24 VA and the peak current draw is 1 Amp. The VT-MSPA2-200-1X-V0-0 includes a fuse for thermal overload protection. The amplifier restarts after shutoff due to thermal overload if the values falls below the temperature threshold. The VT-MSPA2-200-1X-V0-0 weighs 0.14 kilograms. Its protection rating is IP20. The working temperature is from 0 to 50 degrees Celsius.
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