Siemens Synco RMU730 - Page 88

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Building Technologies Basic documentation: Communication via the KNX bus CE1P3127en
HVAC Products Large plants 30.08.2007
The recommendation on the previous page is particularly important in relation to a
network with a large number of RX… room controllers.
In a line containing up to 62 RX… room controllers, an RMB795 central control unit
is used as a "collector". The area/line couplers are set to "Normal (route)".
The heating and refrigeration distribution zone in each RX… room controller is con-
figured with a zone address in the range 1...15 (data communication within the line).
The heating and refrigeration distribution zone in each RX… room controller is
configured on the consumer side with a zone address in the range 16...13 (data
communication via area/line coupler).
The heating/refrigeration demand from the RX… room controllers is transmitted by
the "collector" to the RMH primary heating and RMU primary cooling controllers.
N140/13
1)
N140/13
1)
RMU
RMH
1.0.1
1.0.2
0.2.150
OZW775
1)
N140/13
0.2.254
3)
N140/13
2)
N140/13
0.2.252
RMZ792
RX...
15.1.2
15.1.1
RX...
2.0.20
RX...
2.0.21
RX...
RX...
1.1.64
RX...
1.1.2
RMB...
1.1.1
N140/13
1)
RX...
1.15.64
RX...
1.15.2
RMB...
1.15.1
RM...
15.0.3
RM...
15.0.4
RM...
2.0.2
RM...
15.0.1
RM...
15.0.2
RM...
2.0.1
15.1.3
RX...
15.1.4
RX...
62 RX...
4 RX...
2 RX...
62 RX...
AC 120...230 V
+
-
~
N125/x1
USB
Line 1
Heat zone source
Refrig zone source
Heat zone consumer 1
Refrig zone consumer 1
Line 15
Main line 1
Line 1
Main line 15
Bus power supply
Area 0
ACS alarm
pager, SMS, fax
PC with ACS
Service-
Interface
RJ45
connector
Bus connector
socket
Sercice cable
Ac 1.0.0 Ac 2.0.0 Ac 15.0.0
3127Z45en
Heat distr zone 16
Refrig distr zone 16
Heat distr zone 16
Refrig distr zone 16
Lc 1.1.0
Lc 15.1.0Lc 1.15.0
Heat distr zone 16
Refrig distr zone 16
16
16
Heat zone source
Refrig zone source
16
16
Heat zone consumer 1
Refrig zone consumer 1
Heat distr zone
Refrig distr zone
1
1
Heat distr zone
Refrig distr zone
1
1
Heat distr zone
Refrig distr zone
1
1
Heat distr zone
Refrig distr zone
1
1
Heat distr zone
Refrig distr zone
1
1
Heat distr zone
Refrig distr zone
1
1
Main line 2
LTE filter table: 1) Normal (route), 2) Route all, 3) Block all
Network with
RX… room
controllers