Power Connections And Options; Backup Battery Connection - Honeywell AlarmNet 7845GSM Installation And Setup Manual

Figure 8. Wiring the 7845GSM Zone 1 Input for EOL Supervised N.O./N.C. Triggers

Power Connections and Options

Primary power for the 7845GSM is provided by the AC plug-in transformer. For ECP
communication, you must also connect the +12VDC AUX voltage output of the control panel
(9.6V-13.8V typical) (see Figure 9). In the case of the LynxR-I, primary power is supplied by
the LynxR-I unit through the IP/LRR communication port.
In all installations, TB1-4 GND must be connected to ground (GND) on the control panel.
NOTE: When calculating the total load on the auxiliary power output of the control panel,

Backup Battery Connection

The included battery (K14139) is used for backup in the event of a system power loss.
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•
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TRANSFORMER
2K EOL
N.O.
RESISTOR
12V AUX
GND
CONTROL PANEL
Figure 9. Powering the 7845GSM
budget 10mA for the 7845GSM when using ECP mode.
The battery can provide over 24 hours of system life in the event of a power failure.
A programmable power loss message can alert the AlarmNet Control Center when
system power is lost (power loss messages are reported within 1-3 hours of actual
loss).
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TB1
1 AC
AC
2
ECP (+) VOLTAGE INPUT
3
GND
4
N.C.
ZONE INPUT Z1/Z2
5
7845GSM
BATTERY
K14139
TRANSFORMER
BATTERY
K14139
Section 2: Mounting and Wiring
J1
7845-GSM-030-V0
TB1
1 AC INPUT 1
AC INPUT 2
2
ECP (+) VOLTAGE
3
GND
4
5 Z1/ Z2 or DATA IN
11
RAD FLT
J1
7845GSM
2-5