M-Bus Level-Converter PW20

for 20 slaves

Integrated RS232-Interface (PC as master)
Optional optical interface (laptop / handheld as temporary master)
Max. 20 slaves (Unit loads with 1,5mA)
Power supply 12-24V DC/AC
Baudrates: 300 to 9600 Baud
Overcurrent and short-circuit protection on the M-Bus
Display for data transmission and system status
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)	32V
Max. M-Bus quiescent current	30mA (20 Standardlasten)
Internal bus resistance	ca. 100Ω
Overcurrent threshold	60mA
Transmission speed RS232	300 .. 9600 Baud
Transmission speed RS485	--
Transmission speed optical	2400 Baud
Galvanic isolation to M-Bus	--
Bit Recovery	--
Temperature range	0 .. 55 °C
Dimensions H x W x D	78x56x117mm
Protection	IP40

Downloads

Ordering information

Order Number	Description
MR006	Level-Converter for 20 slaves without optical interface
MR006 IR	Level-Converter for 20 slaves with optical interface

Additional Accessories

Order Number	Description
MOD003	M-Bus modem for level converter
OK001	Optical head for RS232-interface

M-Bus readout-software

Order Number	Description
SWMBHEET	Simple M-Bus readout-software with meter-search and CSV-Export
SW_DOKOM	M-Bus readout-software, in different volumen licenes available