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5.7 Radio Time Switch
The operation of the radio time switch is exactly the same as with the TR 641S.
The correct time, date and Summer-/Wintertime change-over set themselves
automatically with me DCF 77 radio receiver.
Interesting Details:
– Accuracy of the radio receiver +/– 1 sec. in 1,000,000 years
– Transmitter location is Mainflingen near Frankfurt
– Transmitting radius of the transmitter approx. 1000 km
– Synchronisation is effected after initial setting-up and then daily at
night.
5.8 Connection and Adjustment of the Radio Antenna
We recommend the following mounting positions:
– outside the control box (at least 4 m away)
– under the roof
– or in a protected position out of doors
Avoid mounting positions near:
– radio transmitting installations
– radiological equipment
– television and personal computers
1. Use only
t antenna No: 907 0 243 to the radio controlled time
switch
2. Use a 2 lead cable for connection
3. Attach antenna cable to the terminal, connect power supply NT DCF 77.
In this case, set the summer-/ winter change to the correct changeover standard,
see chapter 5.3/ 5.4
In this case, set the summer-/ winter change to the correct changeover standard,
see chapter 5.3/ 5.4
TR 641 S - TR 641 S DCF
A. Operation without DCF 77 radio reception
B. Operation with DCF 77 radio reception
C. Adjustment of one time switch to the radio antenna
1. Connect first one time switch to the operating voltage 230 V~.
2. Connect radio antenna to this time switch, polarity does not matter.
3. The connection of the other devices to t DCF antenna 907 0 243
may take the form of star, bus or tree topology.
4. Connect the other time switches to radio antenna.
5. However the LED lights up, polarity of this antenna connection must be changed.
6. Connect the other time switches to the operating voltage 230 V~.
D. Adjustment of up to 10 time switches to the radio antenna
