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Building Technologies Switching and Monitoring Device RMS705 CE1N3123en

HVAC Products 30 May 2008

Mechanical design

The RMS705 switching and monitoring unit consists of insert and terminal base. The

terminal base has 2 terminal levels and carries the connecting elements (electrical and

mechanical) for an extension module. The insert with the printed circuit boards is plug-

ged into the terminal base.

The unit can be mounted on a top hat rail (conforming to EN 60 715-TH35-7.5) or di-

rectly on the wall.

Operation takes place via the plug-in type or detached operator unit (refer to section

"Accessories").

3123Z05

45 67 8 5 109

1 Connection facility for service tool (RJ45 connector)

2 Removable protective cover with connection facility for operator unit

3 LED "RUN" for indicating the unit’s operating state:

LED on: Power on, use and peripheral devices ok

LED off: No power or wrong use / peripheral devices faulty

4 Button

" " with LED (red) for indicating a fault status message and its acknowledgement:

LED flashing: Fault status message, ready for acknowledgement

LED on: Fault status message still pending but not yet reset

LED off: No fault status message pending

Press button: Acknowledgement or resetting of fault

5 Fixing holes for plug-in type operator unit RMZ790

6 Programming button "Prog": Learning button for changing between normal mode and addressing

mode for adopting the physical device address (tool required)

7 Programming LED "Prog" for indicating "Normal mode" (LED off) or addressing mode (LED on)

for adopting the physical device address

8 Catch for fitting the unit to a top hat rail

9 Fixing facility for a cable tie (cable strain relief)

10 Electrical and mechanical connecting elements for extension module

11 Rest for terminal cover

Engineering notes

• The unit operates on AC 24 V. Operating voltage must conform to the requirements

of SELV/PELV (safety extra low-voltage)

• The transformers used must be safety isolating transformers featuring double

insulation to EN 60 742 or EN 61 558-2-6; they must be suited for 100 % duty

• Fuses, switches, wiring and earthing must be in compliance with local regulations

• Sensor wires should not be run parallel to mains carrying wires that power fans,

actuators, pumps, etc.

• A maximum of 3 extension modules per RMS705 can be connected (possible com-

binations, see chapter “Functions”)

Operation, indication

and connecting

elements

Legend