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Relay PW20L/RS485 User Manual

M-bus level converter with rs485 resp. rs232c for 20 meters
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PW20L/RS485
PW20L/RS232
M-Bus Level Converter with RS485 resp. RS232C
for 20 meters
Bedienungsanleitung
User Manual

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Summary of Contents for Relay PW20L/RS485

  • Page 1 PW20L/RS485 PW20L/RS232 M-Bus Level Converter with RS485 resp. RS232C for 20 meters Bedienungsanleitung User Manual...

  • Page 2: Table Of Contents

    3.1 RS232-Version ........................... 5 3.2 RS485-Version ........................... 5 4. Technical Data ............................6 4.1 General Data ............................6 4.2 Interface Data ............................. 7 4.3 Ordering Information ........................... 7 © Relay GmbH 2024 www.relay.de PW20L · User Manual Version 1.0 - 06/2024...

  • Page 3: Features

    PW20L 1. Features M-Bus level converter for 20 end devices Transparent level conversion from RS232C or RS485 to M-Bus (2 Versionen) Protection against short circuit in the M-Bus External DC power supply Housing for mounting on DIN rail (low profile) LED indicators for power, short-circuit on M-Bus and communication RS485-Verson: 2-wire RS485 interface (not addressable)

  • Page 4: Connectors And Leds

    PW20L 2.3 Connectors and LEDs The following illustration shows a top view of the connectors: All terminals are pluggable, making it easier to wire and replace the PW20L in the event of a fault. Attention: Please ensure that the terminals are correctly replaced in their intended position after removal.

  • Page 5: Functional Description

    PW20L 3. Functional Description The PW20L is a transparent level converter from RS485 or RS232C to M-Bus for a maximum of 20 meters. The device enables externally connected controllers with an RS485 or RS232C interface, such as a BMS, a DDC or a PC, to read the connected meters using M-Bus software (not included in the scope of delivery.

  • Page 6: Technical Data

    LED indicators Power, communication Master, Slave, overcurrent M-Bus Interfaces PW20L/RS232: RS232C with V24 levels PW20L/RS485: RS485 2-wire plus GND Terminals (all plugable) 1 pair terminal for M-Bus, 3-pin terminal for RS485 / RS232C, 3-pin terminal for power supply / protective ground...

  • Page 7: Interface Data

    Article Number Description MB PW20L/RS232 M-Bus level converter with RS232C for 20 meters MB PW20L/RS485 M-Bus level converter with RS485 for 20 meters NT013 Power supply 24VDC, 15W, DIN rail, input voltage 85 .. 264 VAC, 47 .. 63 Hz...

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Pw20l/rs232

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