Internal Diagrams - Siemens OpenAir G..B181.1E/KN Series Technical Basics

Internal diagram
(Applies to all types)
Power supply and bus
cable (color coded and
labeled)
Wiring diagram VAV
Connection to the KNX
TP1-Bus
Note
14 / 44
Siemens
Building Technologies
2.5

Internal diagrams

The VAV compact controllers are supplied with two prewired connecting and
communication cables.
1 1
(G) (CE+) (CE-)
Χ
p
(G0)
2
Core Core color
designation
Cable 1: Power / black sheathing
1 red (RD)
2 black (BK)
Cable 2: Bus / green sheathing
1 red (RD)
2 black (BK)
The VAV compact controllers are connected to the bus as KNX devices according
to the KNX-TP1 standard. KNX-specific limitations regarding cable length, power
supply, number of attachable devices, and distances apply. For more details please
refer to [13] and [16] or to the KNX standard.
G X1 M U1 D1 GND
Y10 Y1 Y2
G0
N1 G..B181.1E/KN
N2 RDG400KN (Example for a VAV enabled room unit)
Terminal layout may differ for each device. Devices with twin-terminals or internally
connected terminals may be encountered as well as bus connection in junction
boxes. Please refer to the technical basic documentation for product specific
information.
∂ The operating voltage at terminals G and G0 must comply with the
requirements under SELV or PELV.
∂ Safety transformers with twofold insulation as per EN 61558 required; they
must be designed to be on 100 % of the time.
VAV compact controller KNX/PL-Link G..B181.1E/KN
Tool = Configuration and maintenance interface
2
(Series E and newer: 7-pin)
Tool
Terminal
code
G
G0
CE+
CE-
CE+ CE- G CE+ CE-
G0
N2
Description
System voltage AC 24 V
System neutral AC 24 V
Bus (KNX / PL-Link)
Bus (KNX / PL-Link)
3547A01
N1
CE1P3547en
2017-03-23