1. Jörn Kruse / STO-G / Mai 2009
ABB STOTZ-KONTAKT GmbH ABB i-bus® KNX The „smaller“ Room Controller RC/A 4.2
© STO/G - Slide 1

2. Room Controller RC/A 4.2 The Smaller Alternative
4 module slots
Power supply and feeding voltage via one phase (L, N, PE) - Voltage range: 85…265 V AC - Frequency range: 50/60 Hz
Extended operating temperature range: -20°C to +45 °C
Each existing module can be operated (naturally!)
Manual operation for testing the correct installation, works without previous programming
Dimensions L x W x H: 20 x 27.5 x 5 cm
STO/G – Slide 2

3. Room Controller RC/A 4.2 Device Configuration
Line feed
Manual Operation
KNX Bus Connection
STO/G – Slide 3

4. Room Controller RC/A 4.2 Mounting in False Floors
For easy underfloor installation, the RC/A 4.2 fits into the common floor boxes and outlets.
STO/G – Slide 4

5. Room Controller Three New Module Types
STO/G – Slide 5

6. Room Controller SA/M 2. 16. 1 Switch Actuator Mod
Room Controller SA/M Switch Actuator Mod., 2-fold, 16 A, floating contact
For switching of big loads up to 16 A (e.g. socket outlets)
Switching power is equivalent to Switch Actuator SA/S x.16.1
The device provides floating contacts. The voltage has thus to be applied directly to the module
Note: Output terminals are not pluggable.
Non-pluggable terminals
STO/G – Slide 6

7. Room Controller SD/M 2.6.2 Switch/Dim Actuator Module, 2-fold, 6 AX
Substitudes Switch/Dim Actuator Module SD/M 2.6.1
Higher relay switching capacity (see Switch Actuator Module SA/M 2.6.1)
Max. continuous current: 6 A
STO/G – Slide 7

8. Room Controller LR/M 1.6.2 Light Controller Module, 1-fold, 6 AX
Substitudes Light Controller Module LR/M 1.6.1
Higher relay switching capacity (see Switch Actuator Module SA/M 2.6.1)
Max. continuous current: 6 A
Note: Fits only for Light Sensor LF/U 2.1
Light Controller functionality is according to LR/S x.16.1
LF/U 2.1
STO/G – Slide 8

9. STO/G – Slide 9