Bosch CM705B Installer's Reference Manual page 8

Installer Reference Guide
CM705B
5) Program the Output Time Parameter
Sets how long the output will turn on or off for.
6) Select any required Output Options
Defines various options including to display or not display a trouble event when the output device is missing
etc.
Power Supply
The CM705B universal expander module includes a 13.8V DC, 1 Amp power supply that can be used to provide
power to sensors or other devices without the need to add a separate power supply module. Terminals to connect
both a 16 to 18V AC 50-60 Hz plug pack and 12V DC 7.2AH sealed lead acid battery.
The module performs a battery test automatically every four hours as well as whenever an area is armed All On or
Part On. The universal expander reports the backup battery condition as follows:
LAN Wiring
On installations with a large number of LAN powered devices (Keypads, Zone and Output Expanders etc) it may be
necessary to provide additional power. To insure that the LAN+ voltage remains at an acceptable level, the CM705B
universal expander can be added to the system to regenerate the LAN+ voltage as well as power additional sensors
or other devices. If the CM705B is one of the two furthest modules from the control panel then you should install the
LAN termination shunt.
The diagram below shows the correct method for wiring the CM705B when LAN+ re-generation is required.
CM797B LAN
Isolator Modules
can be used to
increase the total
LAN length to
1200m using
the appropriate
cable.
See the control
panel quick
reference guide
for complete
wiring instructions.
GN = Green
= Blue
BL
BK = Black
RD = Red
Figure 4: Connecting The CM705B Universal Expander and Regenerating The LAN+ Voltage
8
Normal = 12.5V or above
Low Battery = 11.5V
Battery Missing = 10.2V
CONTROL PANEL
BK
GN
Max total LAN length using 14/0.20 multi strand security cable = 500m.
Max total LAN length using 2 pair, twisted shielded data cable
(Belden 8723) = 1200m.
BL
RD
BK
BL
GN
CM705B UNIVERSAL EXPANDER
A R E A 1
KEYPAD 1
GN
BL
BK
RD
Power for additional sensors or other devices
like keypads or unpowered modules.
1A MAX output.
RD
KEYPAD 2
A R E A 2
Bosch Security Systems 09/12 CM705BIRG FTR1.1
To additional
keypads or LAN
modules.
LAN B
LAN A
LAN -
LAN +
LAN -
LAN A
LAN B
+12V
To additional
keypads or LAN
modules.