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Installing the NetAXS-123 Panels
Panel Components and Descriptions
NetAXS-123 Access Control Unit Installation Guide, Document 800-05779, Revision A 9
Note: For NetAXS-123 reader specifications, see Hardware Specifications, page 60.
2.2.3 Real-Time Clock Protection
The panel RTC is backed up using a super capacitor. The super capacitor will power the real-time
clock for 24 hours in the absence of primary power or backup battery.
2.3 Power Supply
The NetAXS-123 Compact Enclosure is powered by Power Over Ethernet (PoE) injector. This PoE
injector can supply a total system current of 800mA to 900mA @ 12VDC. However the NetAXS-123
controller board consumes 400mA of current, and it therefore leaves 450mA of total current for the
12VDC external power. See Hardware Specifications, page 60, for further details on current limits
using PoE.
The Standard Enclosure uses a 12VDC 4A power supply with an international input of 100VAC to
240VAC. The supply also charges and monitors the condition of the battery. Wire the unswitched
electrical power to the supply per the National Electrical Code as well as any local electrical codes,
including the safety ground wire.
An input power indicator is supplied, and it is illuminated when input voltage is present. If the
indicator is off, the input voltage is off, or too low to operate the system.
Caution: Disconnect the battery and AC power before servicing the fuse. For continued protection
against the risk of electric shock and fire hazard, replace the input fuse with a GMA type fuse with the
rating of 1A, 250V. The fuse is located in the lower-left corner in the cabinet, as shown below.
OmniAssure OT30 OT30HONA
OT31 OT31HONA
OT35 OT35HONA
OT36 OT36HONA
OT70 OT70HONA
OT75 OT75HONA
NexWatch DR 4200K 92042000000
DR 4220 92042200000
Series Reader Model Honeywell Part
Number