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RS-422/485 Converters and Repeaters
The RS-422 and RS-485 interfaces are the most common standards used in modern industrial data communication systems. Most of the well-known fieldbuses like Profibus and Interbus use RS-485 as their electrical standard. RS-422 and RS-485 have the advantage that they can be used at very high data rates, for example Profibus can handle rates up to 12 Mbit/s. All Westermo RS-422/485 converters or repeaters can be used in systems that correspond to these standards. The repeaters can handle data rates up to 1.5 Mbit/s but the converters are limited by the RS-232/V.24 interface to a maximum data rate of 115.2 kbit/s The Westermo RS-422/485 product range can be used for 2- or 4-wire and both in point to point or in bus type systems.
MA-45 AC RS-422/485 Converter
  • Conversion between RS-232/V.24 and RS-422/485 signals
  • DIP-switch selectable fail-safe and termination circuit
  • Suitable for 2- and 4-wire systems
  • Guarantees reliable long-distance communication
MA-45
MA-47 Rack Mount RS-485 Converter
  • Conversion between RS-232/V.24 and RS-422/485 signals
  • Rack Mounting
  • Suitable for 2- and 4 wire systems
  • DIP switch selectable fail-safe and termination circuit
  • Guarantees reliable long-distance communication
MA-47
MA-49 Rack Mount RS-485 Converter
  • Conversion between RS-232/V.24 and RS-422/485 signals
  • Rack Mounting
  • Suitable for 2- and 4 wire systems
  • DIP switch selectable fail-safe and termination circuit
  • Guarantees reliable long-distance communication
  • Bus state controlled by RTS
MA-49
MD-45 Industrial RS-485 Converter
  • Conversion between RS-232/V.24 and RS-422/485 signals
  • Suitable for 2- and 4-wire systems
  • DIP-switch selectable fail-safe and termination circuit
  • Bus state controlled by data or RTS
  • 35 mm DIN rail mounting
MD-45
MDW-45 DIN Rail RS-485 Converter
  • Conversion between RS-232 and RS-422/485
  • Can be used for multidrop applications with RS-232 devices
  • Direction controlled by data flow
  • Extended temp. range –40F° to158F° (–40°C to 70°C)
  • Reliable performance and function over long distance and in environments with high level of interference
MDW-45
RD-48 RS-485 Repeater
  • Full termination and failsafe switch selectable
  • Anti-blocking technology
  • 2- to 4- wire conversion
  • Works with PROFIBUS DP to 1.5 Mbit/s
  • Tri-galvanic isolation
RD-48