When it is important that all clocks show exactly the same time, this is where the clock system comes into its own. All analogue and digital slave clocks connected to their central clock panel are controlled with one uniform time. The heart of every clock system is the master clock. It functions as a timer. Its internal quartz timebase guarantees an accuracy of ±0.1 seconds per day.

Pulses accurate to the second

The master clock evaluates the time and date information using a radio receiver. It corrects possible deviations and forwards the data serially in the form of pulses or as a time-code signal to all connected slave clocks. Time changes, such as changing from daylight saving time to wintertime, can either be performed fully automatically or can be freely configured. Thanks to time-code synchronisation, the slave clocks set themselves automatically even after a long power failure and run again accurate to the second in a very short time.

Diverse convenience features

Accurate switching operations that can be triggered by the master clock are an attractive feature for schools, public institutions or industrial concerns. It is thus possible to trigger visual and audible signaling devices to start break times or working times by means of additional signaling and switching circuits. These socalled floating contacts can also be used to control lighting, air-conditioning, ventilation, heating and alarm systems easily and in operator-friendly manner.

Technical data
Slave clock output: 1 A (output with electronic short-circuit protection)
Minute pulse: 24 V; pulse duration 2 seconds (selectable 1–4 seconds)
Second pulse: 24 V; pulse duration 0.5 seconds (selectable 0.1–1 seconds)
Power reserve: 72 hours (pulse memory with high-speed pulses after power failure)
Programming
Signal points: 800
Switching programs: On / Off pulse with selectable duration
Daily, weekly and twilight program
Program memory: 10 years (lithium battery)
Circuits
Relay length: 2 floating changeover and 2 NO contacts
Max. loading, relay output: 230 V / 6 A
Total load, relay outputs: 4 x 6 A
General data
Operating voltage: 230 V / 50 Hz (-5 %, +10 %) alternatively 24 V DC (-5 %, +20 %)
Total connected electrical load: 18 VA
Ambient temperature 0º C–40º C
Relative humidity: Maximum 85 %