Device description
The RC/A 8.2 basic room controller unit can accommodate up to four plug-in modules. It controls
their function and communicates via the ABB i-bus®. Any type of module can be inserted in the
slots. Plugged modules are detected automatically and are connected to the feed and supply
voltage.
Normally only the 230 V feed-in and the bus connection are required for the connection of the
device. The feed-in can be single, two or 3 phase (50/60Hz). The device generates its own internal
power supply from L1. The feed-in can be assigned to a certain phase via module position M1...
M8.
The flat design of the room controller allows it to be installed in the base plate or the intermediate
ceiling. The manual control allows the function of the modules and the wiring to be tested immedi-
ately after the voltage is connected - even in unprogrammed state.
The function of the device is retained after the failure of the bus voltage. The allows internal com-
mands of the device (e.g. switching command of a binary input on an actuator) still to be carried
out.
For modules with a 24 V DC feed-in (e.g. 24 V DC blind actuators) the unit has a plug-in terminal
fixture available to make direct wiring of the feed-in to the modules easier.
Technical data (excerpt)
Feed-in
– 3-phase L1, L2, L3, N and PE
For the feed-in of module positions M1...M8
– Voltage range
85... 265 V AC
– Auxiliary feed-in
24 V DC, for wiring the direct feed-in to
the 24 V DC modules
Supply
– Via phase L1
– Voltage range
85...265 V AC, 50/60 Hz
– Internal power consumption
4 W max. (without module)
Power loss
4 W max. (without module)
ABB i-bus
®
KNX:
Bus current consumption
< 10 mA
Slots:
Number
8 (M1...M8) for insertion of any type of module
Operating and display elements:
LED red and key
to assign the physical address
4 LEDs yellow and key
for status display and manual operation of module function
1 module selection button
and 8 LEDs
to select the module position to be operated
EN