User Manual

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Siemens RXL39.1 – Room controller CM2N3876en_10
Building Technologies 2015-12-23
Disposal
The device is classified as waste electronic equipment in terms of the European
Directive 2012/19/EU (WEEE) and should not be disposed of as unsorted
municipal waste.
The relevant national legal rules are to be adhered to.
Regarding disposal, use the systems setup for collecting electronic waste.
Observe all local and applicable laws.
Engineering
Topology
Tree, line, or star
NO closed loops
Cable length
Max. 1000 m (sum of all cables of a line
(for details refer to document CM110381)
Cable type
E.g. YCYM 2 x 2 x 0.8 mm
Number of RXL Controllers per
Network
Max. 45
Bus supply
Up to 45 RXL-controllers:
5WG1 125-1AB12
Bus terminator
Not required
• The RXL39.1 room controller operates with a mains supply voltage of AC 230 V.
• The sizing and fuse protection of the power supply cables depend on the total
load and on local regulations.
• Connection terminals for the supply voltage are duplicated, so that the supply
cables can be looped on the controller. The cables must be secured with cable
restraints.
• Different phases may be connected to the terminals 21 (L), 23 (Q13) and
26 (Q33).
• All AC 230 V conductors must be secured with cable ties.
• The volt-free releasing relay output for the fan allows the switching of a load up
to AC 250 V, 5(4) A.
• The volt-free releasing relay output for the heating coil switches a resistive load
up to 1.8 kW, max. 10 A.
• The circuits must be externally fused (≤ 10 A) as there are no internal fuses.
• The cables connected to the room controller must be secured with cable ties.
• The DC 0 … 10 V control outputs YC1, YC2 deliver max 1.5 mA.
• The AC 24 V supply output G (next to YC2) delivers max. 6 VA.
• The DC 0 … 10 V control output YC3 delivers max 1.5 mA.
• The controlled devices (valve and damper actuators) receive their power directly
from the room controller. This means that a separate AC 24 V supply is only
necessary for the field devices require more than a total of 6 VA.
Bus
AC 230 V
supply cables
Volt-free
relay outputs
AC 230 V
DC 0...10 V outputs
– Valve actuators
– Fan control
AC 24 V supply for
field devices (G)