Installation manual
D9124 Operation & Installation Manual
Page 19
© 1996 Radionics
74-06799-000-D 2/96
8. Connect the flying leads of the wiring assembly (provided) to the wires from the
panel, as shown in
Table 4
.
Color of Wire Terminal on Motherboard
Red 1 +12VDC
Black 2 Common
Yellow 3 Serial Data Out
Green 4 Serial Data In
Table 4: D1256/D1257 Connections
CAUTION: Switching the green and yellow wires affects other command centers:
Incorrectly connecting the green wire from the command center to the motherboard's
terminal 4 and the yellow wire to terminal 3, causes other command centers connected
to the panel to go blank and/or sound random beep tones.
You can connect a maximum of 15,000 feet of 22 AWG wire
for all command centers
and printer modules combined
to the data bus, terminals 3 and 4 on the motherboard.
You can connect parallel wire runs from the D9124 System to each device, run wire
device to device, or combine the two.
Extra power needed for more command centers and annunciators:
The D1255,
D1255R, D1256, and D1257 each draw 104 mA when idle. Each draws 206 mA with the
back lighting for the keys illuminated and the sounder activated. Review the
Power
Supply
, and
Auxiliary Current and Standby Battery Requirements
sections to determine
the total power output requirements for your system.
You may need to add one or more UL listed power supplies for the number of command
centers you want to use.
D9124 and he additional power supplies must share COMMON:
When using an
additional power supply to power command centers, the common from the additional
power supply must connect to both the command centers' common and the common on
the D9112LTB board.
A stand-alone power supply powering any device connected to the D9124 must also be
connected to a common terminal on the D9124. Do not connect the stand-alone power
supply to earth ground other than terminal 10 on the D9112LTB board.
D1256/D1257 Specifications
Power
Nominal 12 VDC supplied by the panel
Current Required
Idle: 104 mA, armed or disarmed.
Maximum: 206 mA, with command center illuminated and warning tone ON.
Wiring
Four-Wire expansion cable supplies Data In, Data Out, +12VDC, and Common.
Dimensions
Height: 4.56", Width: 8.15", Depth: 0.816"
Operating Temperature
32° to 122°F (0° to 50°C)
Relative Humidity
5 to 85% @86°F (30°C) Noncondensing