PW 250

M-Bus levelconverter and repeater for 250 devices

  • M-Bus levelconverter and repeater for 250 slaves
  • USB, Ethernet, 2x RS232C, RS485
  • Repeater for M-Bus extension for 250 slaves or cable network
  • Intelligent interface management
  • integrated 110 .. 240 VAC power supply

Pw250 - The versatile levelconverter

Replacing the Digital Master series the PW250 starts a new era of the M-Bus level converters. It combines the familiar and well-proven M-Bus qualities of the DR series with the advantages of multiple and current interfaces, intelligent interfaces Management and a repeater function.

The PW250 is a transparent level converter for 250 M-Bus slaves. With two RS232C, RS485, a USB and a network interface, it offers a matching connector for almost every purpose. A real feature in connection with this large number of interfaces, is their intelligent management, which allows you to connect multiple external controllers simultaneously, and controls access without collision.
Besides its function as an M-Bus level converter, the PW250 can also be used as a repeater to extend an M-Bus network by 250 meters or the cable network.
The new standard of comfort for M-Bus level converters is completed by the integrated flexible power supply (110 .. 250VAC) and a housing, that is mountable on wall and on the DIN-rail.


Technical Data

Operating voltage110 .. 240VAC / 47 .. 63 Hz
Power consumptionmax. 100W
Temparature range0 .. 45 °C
M-Bus voltage (without load)42V
M-Bus standby currentmax. 375mA
Bus impedanceca. 8 Ω
Overcurrent threshold500mA
M-Bus baud rate300 .. 38400 Baud
Galvanic isolationall interfaces to the M-Bus and additionally the repeater input to all interfaces
HousingLight grey ABS plastic, protection class IP52, H x W x D: 229mm x 204mm x 76mm
LED status indicatorspower, communication, maximum load M-Bus, M-Bus short circuit, M-Bus active
Interfaces10/100 MBit Ethernet, USB-Host, USB-Device, RS232C, repeater (M-Bus IN)


Ordering Information

Order NumberDescription

M-Bus level converter and repeater for 250 slaves


Mounting accessory for DIN rail

GHZ Lock

Safety lock for WebLog housing


USB cable A to B, 1m

KAPatch.5E RJ45 1m

Network patch cable CAT5E FTP, 1m