D2112/D2112E Installation Manual
Page 14
74-07111-000-D 196
© 1995 Radionics
Power Outputs
D2112 Circuit Protection
Two self-resetting protection devices protect the
panel from short circuits on both the auxiliary and
alarm power outputs.
D2112E Circuit Protection
Two fuses protect the panel from short circuits on
both the auxiliary and alarm power outputs.
D2112 bell circuit protection: A short on alarm
power output while the bell is ringing disables the
alarm power output until the output times out or you
perform a panel reset.
Reports
The panel transmits a trouble Point 99 report when
there is a short on the alarm output, terminals 6 and
7, or when the fuse is open. The panel transmits a
trouble Point 98 report when Auxiliary Power,
terminal 9, is shorted, or when the fuse is open.
Extra Power for Keypad or Other Powered
Devices
The D202 Keypad draws 45mA (125mA in alarm).
You may need to add one or more D8132 Battery
Charger/Power Supply Modules for the number of
keypads you want to use. Figure 11 shows the
D8132 powering keypads in a stand-alone
configuration.
For UL certificated accounts use a UL listed power
supply. The D8132 is not UL listed as a stand-alone
power supply.
D2112 and D8132 (or other power supply) must
share COMMON: Note that Figure 11 shows the
common from the D8132 module connected to both
the keypads' common and the terminal 10 on the
panel.
A stand-alone power supply powering any device
connected to the panel must also be connected to
terminal 10 on the panel. Do not connect the stand-
alone power supply to earth ground.
Telephone
Dialing Format
You can program the panel to use DTMF or pulse
dialing. See
Phone Parameters in the D2112/
D2112E Program Entry Guide .
Communication Failure
After 5 attempts to reach the receiver (10 attempts if
two phone number are programmed) the panel goes
into communication failure. The panel clears any
reports in its phone buffer. The panel sounds a tone
at the keypad and winks the OK light.
Pressing the Clear key silences the tone. When
communication restores (a report is acknowledged
by the receiver), the OK light restores.
Ground Start
Some telephone systems require a momentary
ground input to initiate dial tone. To interface with a
ground start system, connect a D133 relay as shown
in Figure 12.
See
RELAYS Group in the D2112/D2112E Program
Entry Guide for instructions on programming the
external relay output for Ground Start.
Terminal 3 on the panel must be connected to an
earth ground reference.
Warning: You cannot use ground start phone
systems for fire or combined fire burglary systems.
Figure 11: Power for Keypads
Keypad
Connect up to
four in parallel.
11
12
6
7
8
9
10
13
Keypad
Connect up to
four in parallel.
+12VDC
Common
D8132
Battery Charger Module
(Stand-Alone Power Supply
Configuration)
Red
(+12VDC)
Green
(Data)
Black
(Common)
