Related Manuals for Kamstrup M-Bus Master MultiPort 250L
Summary of Contents for Kamstrup M-Bus Master MultiPort 250L
- Page 1 M-Bus Master MultiPort 250L Installation and User Guide Kamstrup A/S Industrivej 28, Stilling, DK-8660 Skanderborg Tel: +45 89 93 10 00 · Fax: +45 89 93 10 01 info@kamstrup.com · www.kamstrup.com...
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Page 2: Table Of Contents
Contents Introduction M-Bus Addressing Design Primary addressing Secondary addressing Functionality Enhanced secondary addressing Overview of functions M-Bus communication Connections Communication speed Overview of connections Transparent reading Power supply Light Emitting Diodes 6.3.1 Power RS-232 6.3.2 Request RS-485 6.3.3 Data M-Bus Output 6.3.4 Overload 3.6.1... -
Page 3: Introduction
The maximum size of an M-Bus network using Kamstrup M-Bus Master MultiPort 250L is 250 meters. If a number of masters are configured as repeaters and coupled in cascade and only secondary addressing is used, a total of 1,250 meters can be connected, and the total cable length can be up to approx. -
Page 4: Functionality
2 Functionality Kamstrup M-Bus Master MultiPort 250L is an M-Bus master designed for the connection of up to 250 meters with M-Bus interface. The cable length of a master can be up to 2800 m depending on cable type. The master supports primary, secondary and enhanced secondary addressing. - Page 5 Four light emitting diodes indicate the status of mains supply, data communication as well as possible overload and short- circuit of the M-Bus network. Kamstrup M-Bus Master MultiPort 250L has been designed for installation indoors. The protection class can be up to IP 67. 55121391_B1_GB_12.2013...
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Page 6: Overview Of Functions
2.1 Overview of functions • Usable as transparent master, repeater and level converter • Supports primary, secondary and enhanced secondary addressing • Collision detection with break signal • Up to 250 slaves per master • Integrated repeater function • Up to four repeaters in a system = a total of 1250 meters •... -
Page 7: Connections
All connections in MultiPort 250L are screw terminals with max. cable size of 2 mm The protection class of M-Bus Master MultiPort 250L can be up to IP 67. IP 67 means full dust protection as well as water tightness for minimum 30 minutes down to 1 metre. -
Page 8: Overview Of Connections
3.1 Overview of connections Connection number on Designation Colour/connector No. Description master Power supply Blue Neutral Brown Live Yellow/green Protective earth USB 2.0 Max. recommended cable length: 5 m Red/1 5 V power supply White/2 Data - Green/3 Data + Black/4 Ground RS-232... -
Page 9: Power Supply
3.2 Power supply The power supply of M-Bus Master MultiPort 250L is the switch mode type which requires voltage between 100 V and 240 V. The frequency can be 50 Hz or 60 Hz. The mains cable is connected to the master through the associated gland. The diameter must be between 4 and 8 mm. - Page 10 When selecting Run, the installation program starts automatically. When the program is retrieved, it is saved under C:\Kamstrup\M-Bus Master 250L. 55121391_B1_GB_12.2013...
- Page 11 Select as shown below in order to install the program. 55121391_B1_GB_12.2013...
- Page 12 3.4 RS-232 M-Bus Master MultiPort 250L’s RS-232-connection can be used for M-Bus communication on an equal basis with the other serial connections. The following communication speeds can be used for M-Bus communication: • 300 Baud 8E1 • 2400 Baud 8E1 •...
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Page 13: M-Bus Output
3.5 RS-485 M-Bus Master MultiPort 250L’s RS-485-connection can be used for M-Bus communication on an equal basis with the other serial connections. The following communication speeds can be used for M-Bus communication: • 300 Baud 8E1 • 2400 Baud 8E1 •... -
Page 14: M-Bus Repeater Input
3.7 M-Bus Repeater Input Kamstrup M-Bus Master MultiPort 250L can be used as both master and repeater. Used as master, up to 250 meters can be connected in an M-Bus system. The Repeater function makes it possible to extend the size of the M-Bus network both as to number of meters and total cable length. -
Page 15: Cabling 15
M-Bus Master MultiPort 250L has been designed with the newest cable driver technology, and is, therefore, rather insensitive to the capacity of the M-Bus network. Thus, designing an M-Bus network to be used together with M-Bus Master MultiPort 250L the limiting factor as to possible cable length will primarily be the cable resistance in the network. -
Page 16: M-Bus Modules
4.2.1 M-Bus modules Each M-Bus module loads the M-Bus network too. According to the standard, an M-Bus module should load the network with 1 unit load (UL) corresponding to 1.5 mA. Some modules, however, load with up to 4 UL. Capacitively the load of an M-Bus module is 0.5 –... -
Page 17: Cable Topology
In big networks using secondary addressing worst case load must be considered as 250 slaves of 1 UL (Unit Load) each can draw 5.4 A, which thin cables will not be able to withstand. Please note that resistance can be stated in two different ways in cable specifications; i.e. as cable resistance or as loop resistance. - Page 18 M-Bus Master M-Bus Master Power Power MultiPort 250L Request Request MultiPort 250L Data Data Overload Overload Bus topology with cable looped through meters Bus topology with each individual meter connected to the bus M-Bus Master Power Request MultiPort 250L Data Overload Star topology connecting each individual meter direct to the M-Bus Master 55121391_B1_GB_12.2013...
- Page 19 Junction box Area 2 Area 4 4th floor 3rd floor M-Bus Master M-Bus Repeater Area 1 Area 3 M-Bus Master M-Bus Master Power Power Request Request MultiPort 250L MultiPort 250L Data Data 2nd floor Overload Overload 1st floor 24-25 24-25 53-54 24-25 Example of the construction of a large M-Bus network.
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Page 20: Examples Of Network Sizes
4.3.3 Examples of network sizes The below-mentioned tables show examples of possible network sizes with different cable configurations. Each connected repeater increases the possible cable length by the below-mentioned lengths. Cable type 0.34 mm (56 Ohm/110 nF) Speed / Number of meters 300 Baud 10,000 m 2,000 m... -
Page 21: M-Bus Addressing
5.2 Secondary addressing (00000001-99999999) Secondary addressing uses the last 8 digits of the meter number as M-Bus ID. Kamstrup MULTICAL® meters use the customer number as their secondary address, which makes it possible to change the secondary address. 5.3 Enhanced secondary addressing (00000001-99999999)/(00000001-99999999) The meter’s serial number is used for enhanced secondary addressing. -
Page 22: Transparent Reading
6.2 Transparent reading MultiPort 250L is equipped with the following communication possibilities for reading from e.g. remote reading systems, control systems and various controllers with M-Bus interface: • • RS-232 • RS-485 • GSM/GPRS (optional equipment) Communication through the above-mentioned ports is transparent and includes collision detection. 6.3 Light Emitting Diodes The master has four light emitting diodes on its front plate. -
Page 23: Data
Red light emitting diode which flashes when the load on the M-Bus network is between 375 and 500 mA. It is permanently lit when the load on the M-Bus network exceeds 500 mA. 375 mA corresponds to 250UL (M-Bus Unit Loads). At 500 mA M-Bus Master MultiPort 250L disconnects due to overload or short circuit condition. 55121391_B1_GB_12.2013... -
Page 24: Gsm/Gprs
7 GSM/GPRS M-Bus Master MultiPort 250L can be extended by a Kamstrup GSM 6H/8H modem, enabling the master to be remotely read via GSM or GPRS. Reading via GPRS, the maximum M-Bus communication speed is 2400 Baud. GSM 6H/8H is mounted in the upper module area and is connected to the master’s internal power supply as shown in the picture. -
Page 25: Dimensioned Drawings
8 Dimensioned drawings All measurements in mm. 3 pcs. M16 6 pcs. M12 ø4...8 mm ø3...6 mm 80.5 140.5 55121391_B1_GB_12.2013... -
Page 26: Technical Data
9 Technical data Electrical (M-Bus) Number of slaves per master 250 at 1 unit load per slave Total number of slaves 1250 at 1 master and 4 repeaters Cable length per master Up to approx. 2800 m, depending on cable type, cable topology and number of connected slaves Total cable length Up to approx. -
Page 27: Ordering Numbers
210 x 168 x 64 mm (H x W x D) Weight 1 kg Approvals and standards Approvals CE marking Standards EN 13757-2, EN 13757-3 10 Ordering numbers Description Ordering No. M-Bus Master MultiPort 250L MBM-M200000 RS-232 cable DB 9, 145 cm 6699-335 USB cable, 145 cm 6699-336 55121391_B1_GB_12.2013...