8 MB - POWERLAB

Functionsand characteristicsCommunication 0Masterpact in a communicationnetworkDB101146DevicesCircuit breakers equipped with Micrologic control units may be connected to either aDigipact or Modbus communication bus. The information made available depends onthe type of Micrologic control unit (A, P or H) and on the type of communication bus(Digipact or Modbus).Switch-disconnectors can be connected to the Digipact or Modbus communicationbus. The information made available is the status of the switch-disconnector.Communication busDigipact busThe Digipact bus is the internal bus of the low-voltage switchboard in which theDigipact communicating devices are installed (Masterpact with Digipact COM,PM150, SC150, UA150, etc.). This bus must be equipped with a DC150 dataconcentrator (see the Powerlogic System catalogue).AddressesAddressing is carried out by the DC150 data concentrator.Number of devicesThe maximum number of devices that may be connected to the Digipact bus iscalculated in terms of "communication points". These points correspond to theamount of traffic the bus can handle. The total number of points for the variousdevices connected to a single bus must not exceed 100.If the required devices represent more than 100 points, add a second Digipactinternal bus.Communicating deviceNumber of pointsDC150 data concentrator 4Micrologic + Digipact COM 4PM150 4SC150 4UA150 4Length of busThe maximum recommended length for the Digipact internal bus is 200 meters.Bus power sourcePower is supplied by the DC150 data concentrator (24 V).36