D. Connecting several radio time switches to the
DCF antenna
1.
First, connect only
one
time switch to the 230 V mains supply, then connect
to the bus line.
Observe the following when connecting the antenna:
2.
Only after this, connect further time switch devices
to the antenna.
The connection to the
DCF
antenna may take the form of a star, bus or tree
topology, see Fig. 1).
Note:
If an LED at the
DCF
lights up, simply reverse the polarity at this
connection!
3. Following this,
connect the other devices first to the 230 V mains supply
and then to the bus line.
4.
Align the antenna, see Chapter
C.
39
A. Operation without DCF 77 radio reception
1.
Connect the bus line only.
2.
In this case, set the summer/winter change to the correct changeover
standard, see Chapter 5.3/5.4.
B. FW/S connection with radio reception
1.
First connect the radio time switch to the 230 V mains supply and then to the
bus line.
2.
Connect only antenna to the time switch. In this case, the polarity of the
connection is immaterial. The antenna signal is safety extra-low
voltage. Ensure that there is safe isolation from the
voltage supply.
C. Adjusting the DCF radio antenna
1.
Set the radio antenna so that the LEDinstalled in the
front flashes at one second intervals.
DCF 77
DCF 77
Busanschluß
DCF 77- Busanschluß
LED
LED
+
-
+
+
L
L
L
N
N
N
Frankfurt a.M.
(Connection-mix with
TR 658 DCF EIB
is allowed
fig. 1