Level-Converter PW3

for 3 slaves

  • Integrated RS232C-Interface (PC as master)
  • Optional optical interface (laptop / handheld as temporary master)
  • Max. 3 slaves (standard loads with 1,5mA)
  • External power supply 9-24V DC or AC
  • Baudrates: 300 to 9600 Baud
  • Overcurrent and short-circuit protection on the M-Bus
  • Display for power, data transmission and short-circuit
  • Rail or wall mounting

Function of the Master-PW devices

The devices in the PW series are M-Bus master interfaces for networks with 3, 20 and 60 slaves. They are compact in design (wall or rail mounting) and have a broad supply voltage range. The actual operating state is indicated by several LED at the front. All device versions in the PW series are equipped with a RS232 port. The control computer can communicate with the M-Bus meters by the integrated IR optical interface using a ZVEI optical head.



Technical Data

Operating voltage

10,8V .. 28V DC 10,8V .. 28V AC

Power consumption

max. 7W

M-Bus voltage (without load)


Max. M-Bus quiescent current

4.5mA (3 unit loads)

Internal bus resistance

approx. 100Ω

Overcurrent threshold

Transmission speed RS232C300 .. 9600 Baud
Transmission speed optical2400 Baud

Galvanic isolation to M-Bus

Bit Recovery--

Temperature range:

0 .. 55 °C

Dimensions HxWxD



Ordering Information

Order NumberDescription
MR005Level-Converter for 3 slaves without optical interface
MR005 IRLevel-Converter for 3 slaves with optical interface

Additional Accessories

Order NumberDescription
MOD003M-Bus modem for level converter
OK001Optical head for RS232-interface
M-Bus readout-software
Order NumberDescription
SWMBHEETSimple M-Bus readout-software with meter-search and CSV-Export
SW_DOKOMM-Bus readout-software, in different volumen licenes available