M-Bus Master MultiPort 250D/L Contents Application 2 Functionality 3 Features 5 Connections and cabling 6 Communication 6 Connections 8 Dimensions 10 Technical data 11 Ordering 12 Application M-Bus is a bus system, which is specially suited for commu- nication with heat, cooling, water, electricity and gas meters. The system consists of an M-Bus Master and meters with M- Bus interface. Various meter types and brands can be instal- led and co-exist in the same M-Bus network. The network is typically realised by the use of twisted pair cabling. The connected meters are read out either by the M-Bus Master directly, where data are shown in the display, or by a reading program connected to one of the M-Bus Master’s communication ports. The M-Bus Master acts as power supply for the M-Bus mo- dules in the meters. This enables a long battery lifetime for meters with battery supply. The total size of an M-Bus network using Kamstrup M-Bus Masters can be up to 1250 meters when secondary ad- dressing is used. When more M-Bus Masters are coupled in cascade, a total cable length of approximately 14 km can be achieved. Using primary addressing, a network of up to 250 meters is possible. M-Bus master 250D is provided with a smart energy-saving feature to reduce power consumption when no meter rea- dings are being carried out. During installation and maintenance on the M-Bus network, no PC is needed as network analysis, meter search and meter reading can be performed directly on the M-Bus Master by use of the M-Bus Master’s push buttons and display*. M-Bus is standardized according to EN 13757-2 and EN 13757-3. * Only 250D 2 Kamstrup A/S • 5810792_H1_GB_04.2018
Download PDF file
Cookie policy