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B&R X20CS1012
Power supply for up to 64 slaves on the M-BusDecentralized use of the communication interface
The M-Bus master is designed as a single-width module and can…
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Description
Power supply for up to 64 slaves on the M-BusDecentralized use of the communication interface
The M-Bus master is designed as a single-width module and can be connected anywhere within the X20 I/O system. It can therefore be used decentrally for distributed topologies. The M-Bus master supports transfer rates of 300, 2400 and 9600 bit/s; up to 64 slaves supplied via M-Bus can be connected.M-Bus (Meter-Bus) is a relatively simple fieldbus for recording consumption data, such as from electricity or heat meters. It is based on a reverse polarity protected two-wire line and works according to the master-slave principle.
Specification
| Communication module |
1 M-Bus master for controlling up to 64 slaves |
|---|---|
| B&R ID code |
0xCABF |
| Status indicators |
Data transfer, M-Bus power supply, operating state, module status |
| Module run/error |
Yes, using LED status indicator and software |
| Data transfer |
Yes, using LED status indicator |
| M-Bus power supply |
Yes, using LED status indicator and software |
| Bus |
0.2 W |
| Internal I/O |
0.35 W + (Number of slaves * 0.08 W) |
| Module power dissipation |
0.55 W + (Number of slaves * 0.006 W) |
| Additional power dissipation caused by actuators (resistive) [W] |
– |
| Insulation voltage between M-Bus and X2X Link |
500 VDC, 1 min |
| CE |
Yes |
| UKCA |
Yes |
| CRA (Cyber Resilience Act) |
In preparation |
| ATEX |
Zone 2, II 3G Ex nA nC IIA T5 Gc |
| UL |
cULus E115267 |
| HazLoc |
cCSAus 244665 |
| Type |
M-Bus master |
| Variant |
Connection via 12-pin terminal block X20TB12 |
| Max. distance |
See section "M-Bus". |
| Transfer rate |
300, 2400 or 9600 bit/s |
| Number of slaves |
Max. 64 |
| Internal resistance of master |
Max. 6 Ω |
| Bus voltage mark at 0 mA |
I/O supply voltage + (11.5 to 13.5) V |
| Bus voltage drop with space |
12 to 13.5 V |
| Overload shutdown |
250 mA ±10% |
| Bit threshold |
6 to 9 mA |
| Collision threshold |
24 to 36 mA |
| Received readjustment time |
Max. 10 s |
| Bus cable |
Shielded or unshielded |
| Electrical isolation |
M-Bus isolated from bus M-Bus not isolated from I/O power supply |
| Horizontal |
Yes |
| Vertical |
Yes |
| 0 to 2000 m |
No limitation |
| >2000 m |
Reduction of ambient temperature by 0.5°C per 100 m |
| Degree of protection per EN 60529 |
IP20 |
| Horizontal mounting orientation |
-25 to 60°C |
| Vertical mounting orientation |
-25 to 50°C |
| Derating |
– |
| Storage |
5 to 95%, non-condensing |
| Transport |
5 to 95%, non-condensing |
| Operation |
5 to 95%, non-condensing |
| Note |
Order 1x terminal block X20TB12 separately. |
| Pitch |
12.5+0.2 mm |
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