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NFS2-3030/E Installation Manual — P/N 52544:N1 07/18/2014
Installation
Connecting Power Sources and Outputs
•
Accessory power for peripheral devices. TB6 on the CPU draws power from primary,
secondary and external sources to pass +24 VDC power to devices within the same enclosure
as the CPU. If those devices have outputs, the outputs must be power-limited. Power rating is
limited by the AMPS-24/24E primary power source, which is +24VDC and 5 Amps max. TB3
on the AMPS-24 (TB6 on previous AMPS-24/E versions) provides a secondary Accessory
power source. Refer to the Power Supplies Calculations Table of the AMPS-24/24E Manual
for further details.
3.10.2 Connecting the Power Supply
Connect J13 Power on the CPU to TB1 on AMPS-24/E with Cable 75637 (see Figure 3.18). This
cable is 20 feet long, and must run in conduit between the backbox containing the fire alarm control
panel and the backbox containing the AMPS-24/E. See AMPS-24/E Manual for full details and
installation precautions.
In order to conserve batteries, connect AC power and check it before connecting batteries. Follow
the procedures specified in the power supply manual.
3.10.3 Checking AC Power
Table 3.2 contains a checklist for checking the system with AC power applied to the main power
supply:
NOTE:
The CPU ships with an insulator to prevents its lithium battery from discharging. To
preserve the battery, this insulator should be left in place as long as possible before applying AC
power. Some installers may find it convenient to remove the insulator before mounting all
equipment.
NOTE:
If using multiple power supplies with one set of batteries, refer to main power supply
manual for connection requirements.
3030-
A
M
P
S
-24re
v
2.w
m
f
CPU2-3030
Cable 75637
Re
d
Bla
c
k
Bla
c
k
Re
d
AMPS-24
Main Power
Supply
Figure 3.18 DC Power Connections: Main Power Supply
Br
o
w
n
Or
ange
NOTE: For power supply connection wiring for previous
versions of the AMPS-24/E, refer to the AMPS-24/E manual.
!
CAUTION:
WHILE CHECKING AC POWER, MAKE SURE BATTERIES ARE NOT CONNECTED.
