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Example:
If the total current consumption of your external devices
exceeds the 700mA maximum current, then use one of the fol-
lowing 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 MPA1C1 panel below 700mA.
Power consumptions
Device Element
Door strike or magnetic lock current
Reader A maximum current
Reader B maximum current
Buzzer or sounder current
Door position switch
Request to exit switch
Total current for this example
• The maximum power available in the PoE 802.3af Power Class
3 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:
Current
500 mA
100 mA
100 mA
20 mA
20 mA
30 mA
770 mA
41
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