User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 2 System components 08.02.2007
M-bus segment Maximum
number
Type
reference
Data Sheet
M-bus signal converter for a maximum of
250 devices
1
WZC-P250
N5365
M-bus devices 250*
* The SONOHEAT
®
heat meters with an M-bus module up to V1.06 produce a bus load
of 1.5 standard loads. For this reason, this type of meter produces a load of 1.5 M-
bus devices on the M-bus. Hence, a maximum of 250/1.5 = 166 SONOHEAT
®
heat
meters with an M-bus module up to V1.06 can be connected to a WZC-P250.
All other devices and SONOHEAT
®
heat meters with an M-bus module of V2.01 or
higher represent 1 M-bus standard load.
2.5 M-bus signal converter WZC-P60
2.5.1 Introduction
The M-bus signal converter converts RS-485 signals to M-bus signals.
2.5.2 Use
The M-bus signal converter serves for the connection of an M-bus central unit with an
RS-485 port to the M-bus.
2.5.3 Functions
The M-bus signal converter
 converts RS-485, RS-232 or optical signals to M-bus signals
 operates as a bus driver
2.5.4 Equipment combinations
In the M-bus system, the M-bus signal converter is for connection to the RS-485 port of
the M-bus central unit.
A maximum of 60 M-bus devices can be connected to the converter.
M-bus segment Maximum
number
Type
reference
Data Sheet
M-bus signal converter for max. 60 devices 1
WZC-P60
N5382
M-bus devices 60*
* The SONOHEAT
®
heat meters with an M-bus module of V1.06 or higher produce a
bus load of 1.5 standard loads. A SONOHEAT
®
heat meter with an M-bus module up
to V1.06 corresponds to 1.5 devices: This means that a maximum of 60/1.5 = 40
SONOHEAT
®
heat meters with an M-bus module up to V1.06 can be connected to a
WZC-P60.
All other devices and SONOHEAT
®
heat meters with an M-bus module of V2.01 or
higher represent 1 M-bus load.
Note
Note