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OSIRIA secondary clocks
Updated: Jan-14 (Subject to change) Page 3 of 15
1 Functional characteristics
With the Theben OSIRIA secondary clocks, a secondary clock system can be set up using the cable
network of a KNX system.
According to the particular version, they can display time or time and date
The clocks are synchronised via time messages from the KNX bus.
The clocks can request a new time message from the main clock at regular intervals
An alarm message can be sent to the bus if no time messages are received after several requests
One particular advantage is that every OSIRIA clock is fitted with a rechargeable battery charged by
the bus voltage
1
and a power reserve of 10 days.
The rechargeable battery powers the OSIRIA clock mechanism, which has an integrated clock, in the
event of a power failure. The clock keeps going in the event of a power failure; it is only no longer
synchronised via the bus.
2 Application options
OSIRIA secondary clocks are suitable for displaying the time in salesrooms, factories, indoor arenas,
schools, public buildings...
3 Technical data
Operating voltage KNX Bus voltage, ≤10 mA
Power reserve
10 days via environmentally-friendly
cadmium-free rechargeable batteries
Ambient temperature
-5 °C … +45 °C
4 Operation
When receiving carrier signals for the first time, the hands are put in the zero position
(12:00 position) after 5 seconds.
Then the clock automatically sets itself to the appropriate time.
1
Load time ≈ 4 days.
3


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Others manual(s) of Theben OSIRIA 240 SR KNX 5009231

Theben OSIRIA 240 SR KNX 5009231 User Manual - English - 1 pages

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