RS485/M-Bus convertor (45/80/120/190 devices)

RS485/M-Bus convertor (45/80/120/190 devices)
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  • UniPi-2019027
  • 2019027
A durable communication converter of the M-Bus industrial bus to RS485 serial interface. The...more
Product information "RS485/M-Bus convertor (45/80/120/190 devices)"

A durable communication converter of the M-Bus industrial bus to RS485 serial interface. The device is available in four variants differing in the maximum number of connected slave devices (45, 80, 120 or 190). 

RS485toMBus-XL is a durable converter designed primarily to collect data from M-Bus metering devices and convert the data for the standard RS485 serial interface. Signals are converted directly without the need to set up communication parameters or adjust the messages. 

Based on the variant up to 190 M-Bus slave devices can be connected to the M-Bus interface, with the M-Bus and converter states being monitored by converter's processor. Five LEDs are available for indication of M-Bus states and error states. The M-Bus interface features the highest class of overvoltage protection and is also protected against communication errors, inverted power supply polarity and continuous short circuits. 

Components of the converter are encased in a durable aluminium chassis, providing the device with a high degree of mechanical durability and reducing the effect of interference. The converter is designed for standard 35mm DIN rail installation. 

Basic technical parameters

  • max. number of connected M-Bus slave devices: 45, 80, 120, 190 (depending on the variant)
  • RS485 and M-Bus connectors: screw terminals (2,5mm2 conductor diameter)
  • M-Bus master transmission speed: 300 - 9600 bps
  • protections: overvoltage protection, overload protection, protection against short circuit and foreign voltage
  • power supply: 
    • XL45 - XL120: 12-30V DC
    • XL190: 20-30V DC
  • power draw: 0.85-15W (depending on the model and the number of connected devices)
  • operation temperature range: -40°C/+70°C
  • protection level: IP40 
  • size: 37×81.5×107 mm (w/o connectors)
  • weight: 220 g (XL45, XL80), 240 g (XL120, XL190)

Detailed description of the product and complete technical parameters can be found in the product's datasheet (see the File tab above)

Technical Parameter

Max. number of M-Bus slave devices 45/80/120/190 (based on the variant)
Maximum data transfer rate 9600 bps
M-Bus galvanic isolation 1kV (power supply), 1kV (line)
RS485 galvanic isolation >1kV (power supply, 1kV (line)
Overvoltage protection (RS485) TVS 600W
Overvoltage protection (M-Bus) TVS 1500W
Max. input power 15W
Operation temperature -40°C/+70°C
IP rating IP40
Power 12-30V DC (20-30V DC for the XL190 variant)
Mounting 35mm DIN rail
Dimensions 37 × 81.5 × 107 mm (w/o connectors)
Weigth 220 g (XL45, XL80), 240 g (XL120, XL190)
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