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Chapter 1
Overview
Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV)
Warning
requirements in IEC 60950 based safety standards. Statement 1033
To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord. Statement 1023
Warning
Power injectors must be used indoors only. Do not place a power injector in an unprotected outdoor
Caution
environment because water could get into the power injector and cause a short circuit and possible fire.
When the access point is installed outdoors or in a wet or damp location, the AC branch circuit that is
Caution
powering the access point should be provided with ground fault protection (GFCI), as required by Article
210 of the National Electrical Code (NEC).
Depending on the version of the access point, you may have the following power options available in
your access point:
•
•
•
•
The external antenna versions (AIR-AP1572E versions) support power over Ethernet input (on the AC
version only), power over Ethernet output supporting up to 802.3at devices, internal AC or power over
cable power supply options.
If multiple power sources are available, the access point will select the power source which is higher
on the following prioritization list. If a power source is removed, access point will automatically switch
to the next available power source, as per this list:
1.
2.
3.
Power-over-Cable
All versions of AIR-AP1572I and some versions of AIR-AP1572E are equipped with a
power-over-cable (PoC) power supply. The power supply can accept quasi-AC signals in the 40 to 90
V RMS range.
Versions of the AP that have a PoC power supply, also have a shunt/fuse interface providing direct
in-line access to the PoC AC signal. The AP comes with a shunt in the shunt/fuse location. By removing
the shunt or fuse, field technicians can immediately remove power to the AP for service and repairs,
and then restore power by re-installing the shunt or fuse. You can install a fuse in the shunt/fuse
location to limit the maximum sustained current supplied to the AP to prevent damage to the AP or to
the cable plant. Fuses of various amperage are available, and so you can select the appropriate fuse
rating depending on the configuration and operating voltage.
OL-32138-01
Power-over-cable (PoC) -
AC
DC
UPOE (or AIR-PWRINJ1500-2 power injector)
Power-over-cable or AC (whichever is available on your AP)
External DC input
PoE (available in AC powered versions of AP)
Cisco Aironet 1570 Series Outdoor Access Point Hardware Installation Guide
The only source for internal antenna versions (AIR-AP1572I versions)
Power Sources
1-7
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