Honeywell Network Hardware NETAXS-123 用户手册

NetAXS-123 Access Control Unit  Installation Guide, Document 800-05779, Revision A

:

If the total current consumption of your external devices exceeds the 450mA maximum current 
maximum, then use one of the following system configurations: 

•   Power the panel with an external 12VDC power supply.  

•   Power some or all of the external devices with an external power supply to lower the 

total external current powered by the NetAXS-123 panel below 450mA.

• The maximum power available in the 802.3af standard is 15.4W. This limit is generally at 

48VDC, and it is measured at the output of the power injector or PoE switch.  Line losses cause 
a decrease in the power available at the panel when you use longer Ethernet cable lengths.  You 
can minimize these line losses by using either of the following methods:

•   Connecting the NetAXS-123 panel to the power injector or PoE switch with the shortest 

possible Ethernet cable length.

•   Using a high-power 802.3at power injector or PoE switch with a voltage of 56VDC. This 

reduces line losses and thus increases available power at the NetAXS-123 panel. 

The NetAXS-123 panel will not benefit from the increased power capabilities of a 

high-power 802.3at power injector.  Its use only reduces line losses over the Ethernet 
cable.

• Standard Enclosure dimensions: Height = 14 inches (355.6 mm), Width = 12 inches (304.8 

mm), and Depth = 5 inches (127 mm).

• Compact Enclosure dimensions: Height = 7.5 inches (190.5 mm), Width = 7.5 inches (190.5 

mm), and Depth = 2.25 inches (57.15 mm).

Door strike or magnetic 
lock current

 250 mA

Reader A maximum 
current

 50 mA 

Reader B maximum 
current

 50 mA

Buzzer or sounder current

 20 mA

Door position switch

 20 mA

Request to exit switch

 30 mA