Inova Solutions OnTime 4-Digit Digital Clocks, Installation And User Manual

Page: 10 / 42

damaged if connected to a standard PoE port. Note that a power injector
requires a connection to AC power, and may be connected to a battery backed
uninterruptable power supply (UPS).
Figure 1: PoE Cabling Plan
Sites that are already equipped with PoE enabled network equipment are most
likely already compatible with the OnTime clock. The OnTime clock will
automatically request and receive power from a PoE enabled switch that
conforms to the IEEE 802.3af standard.
If the site plan calls for a significant number of clocks to be powered from a
single piece of network equipment, it may be useful to verify that that piece of
equipment can deliver the necessary power. Some PoE enabled switches cannot
deliver the full IEEE 802.3af power of 15.4 Watts per port or may require certain
power options to do so. Refer to the specifications in Table 1 for the actual power
consumption of all of the units and to the manual for your particular PoE
enabled power sourcing equipment.