User Manual

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Building Technologies RXC34.1 – Room controller, basic module CA2N3847en_02
12.01.2007
The plug-in connection for the extension modules incorporates both the
communications and the power supply. The power supply is limited to a maximum of
two extension modules. The possible combinations are determined by the available
applications. Refer to the RXC applications library (CA110300).
The cables for signal inputs D1 and D2 (SELV) must be routed separately from the
AC230 V cables and must comply with SELV requirements. The low voltage and mains
voltage must not be routed in the same cable.
Signal inputs D1 and D2 may be used for volt-free maintained contacts (e.g.
window switches). N.B.: No pulse control.
The controller operates with an AC 24 V supply voltage (SELV). The supply cable must
be protected with at least 10
A.
The controlled devices (valves and damper actuators) are supplied directly from the
controller.
The maximum load on the outputs must not be exceeded (see “Technical data”).
The power consumption of the connected devices must be taken into account when
sizing the transformer.
The volt-free relay outputs allow switching of loads up to AC 250 V, 5 A (4 A). The
cable dimensions depend on the connected load and the local installation regulations.
The circuits must be protected with external fuses (max. 10 A) as there are no internal
fuses.
The cables must be secured with cable restraints. The combining of mains voltage (AC
230 V) with SELV (e.g. AC 24 V) is not permissible.
The maximum load on each output must not exceed 12 VA.
The simultaneous load on outputs Y1 and Y2 must not exceed 24 VA.
Mounting instructions
The controller can be mounted in any orientation as follows:
80060
80061
Rail mounting:
The housing base is designed for snap-
mounting on DIN rails, type EN50022-
35x7.5 (can be released with a screwdriver)
Surface mounting:
There are four drill holes for screw
mounting (see “Dimensions” for drilling
diagram). The housing base is fitted
with raised supports.
Screws: max. diameter 3.5 mm
Extension modules
Signal inputs
STOP
Note!
AC 24 V supply
Volt-free
relay outputs
up to AC 250 V
AC 24 V triac outputs