Comtrol ES7528 - Manual (Page 74)

74 - Power over Ethernet RocketLinx ES7528 User Guide: 2000509 Rev. C
Configuration Using the Web Interface
Power over Ethernet
Power over Ethernet is one of the key features of the ES7528. The ES7528 is IEEE 802.3af and IEEE 802.3at
compliant. The ES7528 supports up to 24 PoE injectors ports, each port with the ability to deliver 606 mA
current.
The following pages are included in this section:
• PoE Control
• PoE Scheduling on Page 77
• PoE Status on Page 78
PoE Control
In WiMax systems, wireless applications, and high-end PoE applications, there are various types of powered
devices (PDs). To be compatible with different PDs, the ES7528 is designed with four powering modes,
including:
• IEEE 802.3af mode
• IEEE 802.3at 2-event mode
• IEEE 802.3at LLDP classification mode
• Forced powering mode to meet any PD type
IEEE 802.3at LLDP provides smart power budget control behavior to fulfill the needs of higher end setups
requiring exact high power delivery. By using the ongoing dynamic re-negotiation function of the IEEE
802.3at LLDP, the ES7528 can perform more intelligently by dynamically reallocating power to the PDs. The
ES7528 implements the 2 event and Link Layer Discovery Protocol (LLDP) PoE into the system for efficient
power budget negotiation between the PSE and the PDs.
The ES7528 also provides PD Status Detection. This provides automatic detection of a remote device powered
by the ES7528. If the remote system crashes or is unstable, the ES7528 performs a system reboot by turning
off and on again to trigger the remote device.
DO NOT TOUCH THE DEVICE
SURFACE DURING PoE OPERATION
- HIGH POWER FEEDING.
If Forced mode is selected, power is provided even if no Ethernet cable is plugged in. Only use Forced mode
if you are attaching a device that is capable of receiving power through its Ethernet connection.