Section 2: Mounting and Wiring
2-5
7845-GSM-030-V0
2K EOL
RESISTOR
7845GSM
J1
GND
ZONE INPUT Z1/Z2
3
2
1
4
5
TB1
BATTERY
K14139
TRANSFORMER
AC
ECP (+) VOLTAGE INPUT
AC
N.C.
N.O.
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.
7845GSM
CONTROL PANEL
7845GSM-008-V0
GND
12V AUX
GND
ECP (+) VOLTAGE
2
1
4
5
3
TB1
TRANSFORMER
AC INPUT 2
AC INPUT 1
J1
BATTERY
K14139
RAD FLT
Z1/ Z2 or DATA IN
11
Figure 9. Powering the
7845GSM
NOTE:
When calculating the total load on the auxiliary power output of the control panel,
budget 10mA for the 7845GSM when using ECP mode.
Backup Battery Connection
The included battery (K14139) is used for backup in the event of a system power loss.
•
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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