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Meters and Energy Cost Allocation
M-bus Level Converter/Repeater 250
WTX631-GA0090
A6V11742346_en--_a
2019-10-01
The level converter/repeater WTX631-GA0090 is the interface between M-bus
device and a read system. It consists of a level converter and the associated
power supply.
●
The level converter and associated power supply form a unit: No addition
transformer or auxiliary power required
●
Connect up to 250 M-bus devices (max. 250 simply M-bus loads)
●
Can be used with the M-bus web server WTV676.., PXC devices, other M-bus
read / configuration systems
●
Up to 6 level converters connected in parallel on one M-bus network
●
Up to 6 level converters (max. 5 level converters as repeater, serial) connected on
one M-bus network
●
Local data reading of M-bus devices via RS-232 or RS-485 interface
●
Remote reading of M-bus devices via M-bus web server WTV676.. (Cloud)
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Summary of Contents for Siemens M-bus Level Converter/Repeater 250
- Page 1 Meters and Energy Cost Allocation M-bus Level Converter/Repeater 250 WTX631-GA0090 The level converter/repeater WTX631-GA0090 is the interface between M-bus device and a read system. It consists of a level converter and the associated power supply. ● The level converter and associated power supply form a unit: No addition transformer or auxiliary power required ●...
- Page 2 The level converter is the communications interface to read up to 250 M-bus devices (simple M-bus loads). The data is read via a M-bus web server WTV676, a PXC device, or via other M-bus read/configuration systems. Multiple level converters can be connected in parallel on one M-bus network. When connected to a M-bus web server, up to six level converters can be connected in parallel.
- Page 3 Functions Operating modes The power supply can be employed as follows: ● To power the level converter Power 230Vac RS-485 RS-232 WTX631-GA0090 WTX631-GA0090 (8) (9) (3) (4) LEVEL CONVERTER POWER SUPPLY TX M-Bus RX M-Bus Short Circuit Overload Power Vout M-Bus MASTER 24Vdc Level converter/repeater...
- Page 4 Level converter as slave, reading over the M-bus web server The level converter is connected as a slave to a M-bus web server WTV676.. to extend the M-bus network. Up to six level converters can be connected in parallel. A max. of six level converters (max.
- Page 5 Level converter as master for reading data over the RS-232 or RS-485 interface The level converter can be connected as master via the RS-232 or RS-485 interface to a PXC device or a PC to read device data. Level converter (RS232 or RS485 interface) PC or M-bus devices NOTICE The level converter WTX631-GA0090 does not have a mini USB interface to locally read...
- Page 6 Level converter as standalone device with up to 250 connected M-bus devices The level converter can be used as the master on one M-bus network with up to 250 M-bus devices. Smart Infrastructure A6V11742346_en--_a 2019-10-01...
- Page 7 Displays The level converter has six LEDs on the front side for indicating the operating state. TX M-Bus RX M-Bus Short Circuit Overload Power Run… The (green) LED indicates the operational state of the device. ● Blinking at 1 Hz (slow) -> Device functions are being set up. No communication. ●...
- Page 8 Technical design Topology The M-bus permits various network topologies. The devices can be connected to the level converter in a line, bus, star, or tree topology, or a combination thereof. Ring topology is not permitted. Bus cable polarity is not relevant, simplifying installation. Line topology Bus topology Star topology...
- Page 9 Tree topology Combination of topologies Ring topology Smart Infrastructure A6V11742346_en--_a 2019-10-01...
- Page 10 M-bus Address M-bus uses two types of addresses to recognize devices: ● Primary addressing: Up to 250 primary addresses can be assigned to a M-bus system. The primary address is normally assigned during device commissioning. Pure primary addressing is not possible if more than 250 devices are read on the M-bus network. ●...
- Page 11 Connection terminals The device as the following connection terminals / LEDs. Power 230Vac RS-485 RS-232 WTX631-GA0090 WTX631-GA0090 LEVEL CONVERTER POWER SUPPLY TX M-Bus RX M-Bus Short Circuit Overload Power Vout M-Bus MASTER 24Vdc M-bus slave connections to the M- Mains voltage AC 230 V. bus web server WTV676..
- Page 12 GA0090, M-bus level converter WTV531-GA5060, RF converter WTX660- E05060 Engineering instructions Desigo TM TX Open, TX M- CM110572 Related documents such as environmental declarations, CE declarations, etc., can be downloaded at the following Internet address: http://siemens.com/bt/download Smart Infrastructure A6V11742346_en--_a 2019-10-01...
- Page 13 Comply with all local and currently applicable laws and regulations. Warranty service Technical data on specific applications are valid only together with Siemens products listed under "Equipment combinations". Siemens rejects any and all warranties in the event that third-party products are used.
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Page 14: Technical Data
Technical data Power supply Operating voltage AC 110…240 V AC frequency 47…63 Hz Power consumption 6 W + 0.07 W for each connected M-bus device Maximum power consumption 45 W, 45 VA Vout: DC 24 V, max. 15 VA ≤3 mA (2 M-bus loads) Power consumption level converter (in series) Internal fuse PTC resistance and varistor... - Page 15 Environmental compatibility The product environmental declaration A5W00050130 *) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal). *) The documents can be downloaded at http://siemens.com/bt/download. Degree of protection IP class IP20 per EN60529...
- Page 16 Short Circuit Overload Power Vout M-Bus MASTER 24Vdc Issued by © Siemens Switzerland Ltd, 2019 Siemens Switzerland Ltd Technical specifications and availability subject to change without notice. Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug Tel. +41 58 724 2424 www.siemens.com/buildingtechnologies...