Wago 750-643

MP-Bus-Master
The bus terminal 750-643 acts as a master for the MP-Bus (Multi Point Bus from the Swiss company Belimo) and allows it to be integrated into a higher-level bus network, such as Ethernet or Lonworks. The MP-Bus is used for controlling actuators in the HVAC sector, for dampers, control valves, and VAV volume flow controllers. An additional product line with MP-Bus connection is Belimo's window ventilation system FLS.

Devices with MP-Bus connection, such as the Belimo MFT actuator series, can communicate with higher-level controllers via a bus line. The actuators have their own connections for active and passive sensors (temperature, humidity, and ON/OFF switches), which can also be queried via the MP-Bus. An MP-Bus master, i.e., the WAGO bus terminal, can manage up to 8 slaves (actuators) and 8 sensors (1 sensor can be connected per slave) over a common bus line, significantly reducing the wiring of the actuators and sensors.

For special parameterization of the Belimo actuators, a parameterization device from Belimo can be connected to the terminal (hand-held device or Belimo PC tool). The Enable handheld contact serves this purpose. When an external parameterization device is connected to this contact (or simply +24 V), the terminal disables its MP-Bus communication.