Mbus Master M-Bus master / network gateway
A DIN-rail M-Bus master and converter that links up to 250 wired M-Bus meters to RS232/RS485, with automatic load adjustment and configurable short-circuit protection for stable bus-based meter reading
- Up to 250 M-Bus devices connected on a single master
- Converts M-Bus to RS232/RS485 and back for serial host systems
- RS485 transmission direction selected automatically
- M-Bus short-circuit protection with configurable reaction (1-4s) and recovery (10-60s)
- Automatic adjustment to M-Bus loads; over-voltage protection >1000V
Overview
The M-Bus Master is a DIN-rail M-Bus master and level converter for utilities, district cooling operators, property and facilities managers, and OEMs who need to connect wired meters to standard serial systems. It converts M-Bus signals to RS232/RS485 and back, so heat, cooling, water, and energy meters can be polled by existing data concentrators, loggers, and AMR software.
A single unit supports up to 250 M-Bus devices, with automatic adjustment to M-Bus load and automatic direction control on the RS485 side. Built-in short-circuit protection with a configurable reaction and recovery time keeps the bus stable when a fault occurs on a long meter loop.
Mains-powered at 90-250V and rated for wide operating temperatures, it installs on a standard DIN rail inside metering cabinets and panels for fixed-network and bus-based meter reading.
Everything for specification & install
Specifications
Full technical data below. Refer to the datasheet for ordering codes and dimensional drawings.
Technical Specifications
| Description | M-Bus Master/Converter (M-Bus - RS232/RS485) |
| RS232 | up to 15 m, speed up to 9600 baud |
| RS485 | automatic chose of direction, max 32 transivers, speed up to 9600 baud |
| M-Bus | up to 250 devices |
General
| Power supply | 90-250V~, 50-60Hz |
| Over-voltage protection | >1000V |
| Power consumption | 300mA MAX |
| M-Bus line power | mark 36-40V, space 24-27V |
| Adjustment to M-Bus loads | Automatic |
| M-Bus short circuit event current | ≥500mA |
| M-Bus short circuit reaction time | Configurable, 1-4s. |
| Recover after short connection | Configurable, 10-60s. |
Physical characteristics
| Dimensions | 105x75x45 mm |
| Weight | 170 g |
| Mounting type | on DIN rail |
| Protection type | IP20 -20 to +50oC |
Climate Conditions
| Operating temperature | -50 to +70oC |
| Storage temperature | 5 – 95%, non |
| Humidity range | condensing |
Regulatory Approvals
| Electromagnetic compatibility |
| EN 55022:2010 |
| EN 55024:2010 |
| EN 61000-4-2:2009 |
| EN 61000-4-3:2006 |
| EN 61000-4-3:2006/A1:2008 |
| EN 61000-4-3:2006/A2:2010 |
| EN 61000-4-4:2004 |
| EN 61000-4-4:2004/A1:2010 |
| EN 61000-4-6:2009 |
| Safety |
| EN609501:2006+A1:2010+A11:2009+A12:2011 |
Other Features
| Warranty period | 2 years |
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