Bürkert has eliminated control-related elements for the new Type 8741 Mass Flow Controller (MFC) / Mass Flow Meter (MFM). These control tasks are assumed by a superordinate control unit which addresses sensor-actuator modules (SAM), such as Mass Flow Controllers, by means of a system bus. The SAMs are equipped with an interface for the proprietary Bürkert System Bus (büS). Previously, each MFC/MFM included its own control hardware; now the Type ME2X system control unit (SCU) is used. The SCU can control up to 16 control circuits (e.g. SAMs) at once and functions as a gateway between Industrial Ethernet and the büS. As a result, the field device level can be connected directly to Industrial Ethernet in a effective manner. büS is based on CANopen, however it works with auto-addressing and without a master in the system. If a CAN bus is already present in the customer application, switching between büS and CANopen is possible with a DIP switch on the device. The shift of the control hardware from the MFC/MFM to the SCU results in considerable benefits in applications with numerous control loops. Both the simplified flow controllers/meters and reduction to only one Ethernet interface in the central control unit contributes to easy implementation and high efficiency of the plant.
Convince yourself and get in touch with us on the Hannover Trade Fair: hall 9, booth G16.