User Manual

ManualsBrandsSiemens ManualsBuilding automationRoom controller RXC39.5

7 / 14

Siemens RXC39.5 – Room controller CM2N3856en_07

Building Technologies 2015-12-23

Commissioning

The RXC39.5 controller is commissioned with the RXT10 commissioning and service

tool. This is connected to the L

ONWORKS bus via a tool socket (on the controller or room

unit).

The commissioning procedure for the entire Desigo RXC range is described in

detail in the RXT10 user manual, document CM110669.

The labeling fields “Appl.” and “Loc.” on the controller are used to indicate the

application actually loaded and the location of the controller, either in writing or by

use of printed adhesive labels (see “Label” under “Mechanical design”).

All applications (including basic application 00039) allow direct interrogation of the

inputs and control of the outputs using the RXT10 commissioning and service tool.

This makes it possible to test the installation and to operate connected plant

provisionally before the complete Desigo RXC system is commissioned.

• The L

ONWORKS bus plug (terminals 23 and 24) can be removed and

reconnected at any time, even while the controller is in operation. Only the

original bus plug may be used.

• Overloading the triac outputs Y1, Y2 may cause the thermal fuse to trip and

disable the controller. When the problem has been solved briefly disconnect and

reconnect the power supply. The controller will resume normal operation after a

delay of approximately 10 minutes.

Outputs Y1, Y2 are not protected against accidental connection to AC 24 V.

This can damage the triacs.

Technical data

Power supply

Operating voltage

AC 24 V ± 20% (SELV / PELV) or

AC 24 V class 2 (US)

Frequency

50/60 Hz

Power consumption

without field devices

with connected field devices

6 VA

Max. 33 VA

Permissible transit power AC 24 V

for supply of field devices

Max. 12 VA

Internal fuse

Thermal, automatic reset

Caution

External supply line protection (EU)

Fuse slow max. 10 A

Circuit breaker max. 13 A

Characteristic B, C, D according to

60898

Power source with current limitation of

max. 10 A

Labeling

Function test

Notes

STOP

Note!