END-OF-LINE DIODE: The EOL diode is connected to allow supervisory current
to flow and to block Alarm current. The Controls Panels come with a
removeable end-of-line (EOL) diode connected to terminals 21 and 22 (see
Figure 6-1). When no external bells are connected, this diode must be
secured to these terminals to prevent a constant Trouble condition. When
external bells are connected, this diode must be removed from terminals 21
and 22. Then it must be placed at the end of the bell
loop as shown in the
Installation Wiring Diagram. The diode should be connected in parallel
with the last bell.
The polarity of the diode must be observed. The diode has a red lead and a
black lead. While connected to the Control Panel, the Black lead (anode)
is connected to Terminal 21. The Red lead (cathode) is connected to
Terminal
22. When used in the last bell box, make sure the diode's Black
wire connects to the bell loop wiring that originates at Terminal 21
(+).
Likewies, make sure the diode's Red wire connects to the bell loop wiring
that originates at Terminal 22
(-).
TROUBLE BELL: Terminals are provided for a remote Trouble bell if
required. The Trouble bell should be placed where it can be readily heard
if Trouble occurs.
AUXILIARY CIRCUIT:
If
the system is for local operation only and is not to
be connected to a municipal auxiliary box, a
5
watt,
5%
resistor shall be
connected across Terminals 11 and 12 of the Control Panel. The resistor's
value is determined by the Control Panel as follows:
0
50 ohms for the C-99A-12
4.00
ohms for the C-100A-24
500 ohms for the C-99A-24
This will maintain supervision of the auxiliary circuit.
Monaco
Ente~p~ises
at.
SPOKANE
WASHINGTON
49714
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