User Manual

ManualsBrandsSiemens ManualsRoom controlsRoom controller, basic module RXC34.1

CA2N3847en_02

12.01.2007

Building Technologies

847

DESIGO™ RXC

Room controller,

basic module

RXC34.1

Optimized for extract ventilation control in laboratories, with L

ONMARK®-compatible bus

communications

The RXC34.1 controller is used for air volume and temperature control in

individual rooms:

• Ideal for the control of fast air extraction in laboratories

• For VAV control in general

• For combination with extension modules

• Downloadable application software

• L

ONMARK®-compatible bus communication

• PPS2 interface

• Integrated into the DESIGO building automation and control system

• 2 volt-free relay contacts (normally-closed and normally-open)

• 2 (non-volt-free) digital inputs

• AC 24 V digital outputs (triac)

• 4 analog inputs, DC 0…10V

• 1 combined analog input DC 0…10V / LG-Ni1000

• 3 analog outputs, DC 0…10V

• AC 24 V operating voltage

Summary of content (14 pages)

PAGE 1
3 847 DESIGO™ RXC RXC34.1 Room controller, basic module Optimized for extract ventilation control in laboratories, with LONMARK®-compatible bus communications The RXC34.
PAGE 2
Application The RXC34.1 room controller is a universal controller, specifically designed for use as a fast volume flow rate controller. The addition of extension modules (e.g. RXC41.1) provides scope for the integration of further applications. For operation, either conventional room units and momentary-contact switches, or integrated room units with a bus connection may be used.
PAGE 3
Compatibility The RXC34.1 controller can be combined with extension modules, such as the RXC40.1 for lighting control (data sheet 3842) and the RXC41.1 for the control of blinds (data sheet 3843). In such cases, the RXC34.1 controller must be loaded with an application which matches the selected combination of extension modules. The possible combinations and the associated applications are described in the applications library (CA110300).
PAGE 4
80049 Removing the terminal cover Label Bar code, Code 39 (ID number) 3847Z01 Protection standard Temperature range (0 … 50 °C) Observe notes in this document Neuron ID Factory-loaded application Definitive application Location Note Connection terminals STOP Caution Options for use of the labeling fields “Appl.” and “Loc.
PAGE 5
• PPS2 (terminals CP– and CP+): Interface to the QAX3… room units. (In addition to PPS2, the LonWorks® bus can also be looped to the tool socket on the room unit.) • Tool socket (RJ45) on the controller or room unit, for: − RXT10 commissioning and service tool (LonWorks® bus) − RXT20.1 service terminal (PPS2) • PE bus (plug-in connection): Interface to the extension modules such as the RXC40.1 and RXC41.1.
PAGE 6
Extension modules 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). Signal inputs The cables for signal inputs D1 and D2 (SELV) must be routed separately from the AC230 V cables and must comply with SELV requirements.
PAGE 7
When mounting note the following: • • • • The controller should not be freely accessible after mounting Ensure adequate air circulation to dissipate heat generated during operation. Easy access is required for service personnel Local installation regulations must be observed. The mounting instructions and a drilling template are printed on the controller packaging. Mounting with extension modules The controller and extension modules (e.g. RXC40.1 and RXC41.
PAGE 8
Technical data Power supply Operating voltage SELV safety low voltage in accordance with Frequency Power consumption without field devices with field devices and extension modules Internal fuse Supply cable protection (external fuse) AC 24 V ± 20 % HD 384 50/60 Hz 7 VA Max. 34 VA Thermal, self-resetting ≤ 10 A Inputs Signal input for volt-free contacts 2 (D1, D2) Number of inputs DC 33 V Contact voltage (SELV to HD 384) DC 8 mA Contact current Max. 100 Ω Contact transition resistance Min.
PAGE 9
Control outputs DC 0 ... 10 V Number Voltage range Interface to room units Resolution Output current Time constant Max.
PAGE 10
CLB LonWorks® T IN CLB CLA 4 CLA CP+ 3 Bus QAX... IN 30 31 32 Power supply G0 Controller ground 1 G0 Controller ground 2 G AC 24 V supply 3 G AC 24 V supply 4 33 34 35 D2 GND D1 M U4 0 ... 10 V IN G M U3 G Y13 G0 27 28 29 0 ... 10 V IN 3847A02 23 24 25 26 Y12 Q22 Q21 1 21 22 0 ... 10 V OUT 0 ... 10 V OUT Q12 2 0 ... 10 V IN 0 ... 10 V AC 250 V 5(4)A 17 18 19 20 CP– Y2 0 ... 10 V OUT 0 ...
PAGE 11
Relay outputs Q11 23 N/C contact Q12 24 N/C contact Q13 25 N/O contact Q14 26 N/C contact Analog inputs / outputs Y12 27 Analog OUT 0 … 10 V G0 28 Controller ground Y13 29 Analog OUT 0 … 10 V G 30 AC 24 V (phase) U3 31 Analog IN 0 … 10 V M 32 Measuring neutral (G0) G 33 AC 24 V (phase) U4 34 Analog IN 0 … 10 V M 35 Measuring neutral (G0) Signal input for volt-free contacts D1 36 Signal input GND 37 Signal input ground D2 38 Signal input STOP • Observe the technical data for the relay outputs.
PAGE 12
Connection diagrams N1 Connection of field devices, room unit, LonWorks® bus and power supply 1 G0 G0 2 G0 G0 3 G G 4 G G 5 Y1 Y1 6 G 7 Y2 Y1.2 GL M Y1.1 Y2.2 Y2 8 G G 9 Y11 Y 10 G0 AC 24 V B2 G M ∆p G0 11 U1 B3 G ∆p B1 Y3 M 12 M M B1 13 U2 14 G B4 15 X1 B 16 M M U3 G0 T 17 CP– B4.1 G AQ PPS2 18 CP+ B1 19 CLA LON 20 CLB 21 CLA AC 250 V 5(4)A 22 LonWorks® Bus CLB Q1 23 Q11 24 Q12 Q2 25 Q21 26 Q22 29 Y13 Y4 Y5 0 ... 10 V OUT 28 G0 0 ..
PAGE 13
Parallel connection of several thermic actuators Up to 2 thermic actuators can be connected directly to the room controller. In the case of more than 2 actuators a power amplifier is required. The same principle applies to output Y3. Note that the simultaneous load on outputs Y3 and Y4 must not exceed 9.5 VA. Power consumption at input X1 of the UA1T: 0.5 VA. STOP Mixed operation: Connecting thermic actuators to the controller as well as to the power amplifier is NOT allowed.
PAGE 14
Dimensions Dimensions in mm 80054 90 110 35,3 Without terminal covers 3,9 1 62 50 With terminal covers 62 120 35,3 5 3,9 1 161 3847M02 152 80056 100 Drilling diagram 135 14/14 © 2005 - 2007 Siemens Switzerland Ltd. Building Technologies RXC34.1 – Room controller, basic module Subject to alteration CA2N3847en_02 12.01.