Installing the Switch
Installing the Switch
Installation Procedures
9.Connect a 620 Redundant Power Supply to the switch (Optional)
The HP ProCurve 620 Redundant and External Power Supply, (J8696A), hereafter referred to as the 620 RPS/EPS, is an accessory product for the 3500, 3500yl and 6200yl switches and specific other HP ProCurve switches. The 620 RPS/EPS provides two types of power to the switches:
■Redundant power to two switches, to back up the internal switch power supply in case of AC power loss, or a fault condition. Should the internal switch power supply fail, power will be supplied from the 620 RPS/EPS.
■External
The 620 RPS/EPS is an unmanaged power supply that only provides information by way of LEDs.
RPS/EPS Operation
The RPS/EPS monitors the power signal from the switch by detecting that the RPS/EPS is connected to a valid switch with an RPS/EPS cable. When the power from the switch is no longer detected, the RPS/EPS will turn on and provide power to the switch within 1 millisecond.
The RPS/EPS supports hot plugging of the RPS cable only, Hot disconnect of the EPS (PoE power) cable is not supported, and could cause loss of power to the switch. The EPS cable can be connected at any time. The RPS/EPS unit must be powered down in order to unplug the EPS (PoE power) cable, if power is flowing.
Operating Characteristics of the 620 RPS/EPS (J8696A)
The 620 RPS/EPS has two RPS ports, each of which can provide redundant +12V power to a connected switch. If a switch with no AC power is connected to an operating 620 RPS/EPS, it will not receive power. The switch must first be powered on, then connected to the 620 RPS/EPS.