Product Description

The Bosch VT-MSPA1-21-F5-000-000 is a VT-MSPA series valve amplifier. It is compatible with proportional valves that have a single solenoid. The current command value range is 4 to 20 milliamps. The amplifier supports reverse polarity protection for the operating voltage. The up and down times for the ramp generator are separately adjustable. Other features available on the VT-MSPA1-21-F5-000-000 include zero point setting, command value adjustment, output short-circuit protection, characteristic curve generator and LED status displays. Measuring sockets are available on the amplifier for actual current value, internal current command and internal current setting. Operators can install the amplifier on top hat rails. External connections are made via three tension spring plug-in connectors. The internal power supply unit on the VT-MSPA1-21-F5-000-000 features a current limiter for preventing current peaks. Nominal value of the supply voltage is 24 Volts DC.

The maximum current consumption is two Amps. The maximum power consumption is 48 VA. The peak inrush current does not exceed four Amps. Start-up time of the amplifier is less than a second. The protection rating of the analog amplifier unit is IP20. As the amplifier is unprotected against liquid ingress, it must be mounted inside a suitable enclosure prior to outdoor use. Weight of the VT-MSPA1-21-F5-000-000 is 0.14 kilograms. The maximum permitted temperature range of change is 5 degrees Celsius per minute. The transport temperature range is -40 to 80 degrees Celsius. The storage temperature range with UV protection is 5 to 40 degrees Celsius. Relative humidity in the operating environment must be kept between 10 and 95%. The maximum permitted altitude for amplifier use is 2000 meters.  The maximum permitted transport shock is 15 g for 11 milliseconds.