2005613_a•en•2017-09-01
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18
Sensor Splitter
5.1 Connecting the
Wisotronic
Weather station multisense
Sensor splitter 1
MASTER
Sensor splitter 2
SLAVE
Sensor splitter n
SLAVE
Power supply
unit
230 V
50 Hz
Sensor bus
Wisotronic bus 1
Wisotronic bus 2
Wisotronic bus n
Power unit
Power unit
Wisotronic
1-channel
Control panel
Wisotronic 2/3/4-channel
Control panel
Wisotronic 2/3/4-channel
Fig. 8
Schematic diagram of a Wisotronic unit
The connection of a Wisotronic is shown in
. Please note the following
special features when connecting the unit:
The sensor splitter to which the weather station multisense is connected
must
be supplied via a separate power supply unit.
If possible, always connect the weather station to the sensor splitter that is
acting as the MASTER. Provide separate on-site fuse protection for the sepa-
rate power supply unit. This ensures that weather data will always be sent to
the sensor bus.
NTTE
The sensor splitters connected to the sensor bus only receive weather data
when the weather station
and
the MASTER are in operation.
The 24-V output terminals (X10) of the sensor splitters must not be con-
nected to each other.
The 0-V output terminals (X10) of the sensor splitters must be connected to
each other to prevent potential differences between the connected devices.
Otherwise, long line lengths may result in communication problems.
The Wisotronic control panel and the weather station multisense already have
an integrated 120-Ω terminating resistor.
For all sensor splitters to which a Wisotronic is connected,
encoding switch
3 must be set to the N position
. This setting should always be made with
the device switched off.