20
Supply and Extract
For connection of the 0-10V fan control function.
LAN
This is for the LAN connection.
SD Card
This is the location of the SD card connection.
Line A
Used to connect the Modbus network.
Line B
Used to connect the Modbus network.
USB
This is for the USB connection to the commissioning PC.
2.8.5 Connecting the Ventilation unit
The extract and the supply fans of the ventilation device can be controlled via the universal control with a 0 -
10V DC voltage. Connections for supply and extract air are facilitated through the respective supply and extract
connections.
Attention! A parallel operation of the 0-10V fan control with a constant pressure control method is not
possible
.
Ensure that the connections are to the correct extract and supply fan in ventilation units with varying extract
and supply connections.
2.8.6 Modbus Connection
There are two RJ45 jacks (Line A and Line B) that are used to connect the MultiPlexBoxes. T
wo 120 Ω end
resistors are required, each of which is connected to the two ends of the Modbus (on the last device in the
network). Details about network scenarios are provided in the following section.
If only the Line A port is used, the termination resistor must be plugged in. The second terminator is inserted
into the last flat box of the Modbus.
If two Modbus lines are established, i.e. the Line A and Line B connections, the two terminator resistors must
be placed in the last box of the Modbus line that was last plugged in. See also follow-up pages.
Up to 255 boxes can be networked via the Modbus. Use the CAT.5 or CAT.7 network cables. The maximum
length of the Modbus should be 600m, from the first to the last device in the network. Do not exceed this.
MultiPlexBox Address List
In the appendix ("Annex - MultiPlexBox Address List") you will find a table in which you can document the
device location and device addresses of the boxes during assembly. You can detach or copy the list or print it
from a PDF (download).
Modbus Scenarios
On the next page you will see single and double series MultiPlexBox connections.
