HP 6400CL - Manual (Page 33)

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Installing the Switch
Installation Procedures
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8. (Optional) Connect a Redundant Power Supply to the
Switch
The “ProCurve 600 Redundant and External Power Supply (hereafter referred
to as the RPS/EPS)” (J8168A) is an accessory product for the Series 6400cl
Switch devices and specific other ProCurve switches. The RPS/EPS provides
redundant power to any one of up to six switch products, to back up the power
supply in the switch in case of loss of AC power, or a fault condition. The RPS/
EPS is an unmanaged power supply that only provides information by way of
LEDs or through the port interfaces to attached devices.
Operating Characteristics
The RPS/EPS has six connectors, each of which can provide redundant +12V
power to a connected switch, but only one connector can provide this power
at a given time. If a switch with no AC power is connected to an operating
RPS/EPS, it will NOT immediately power up this new switch. Power can only
be provided to a switch if it is first powered on and operating correctly. Then
when the power to the switch fails, power will be provided from the RPS/EPS,
if it is available, that is, if the RPS/EPS is not already providing power to a
higher priority switch. If two or more devices fail, priority goes to the device
plugged into the lower numbered port on the RPS/EPS unit. Consequently the
most important switch must be plugged into port one on the RPS/EPS. In this
state, the “Connected” LED should be ON, and the “Power Status” LED should
be BLINKING. (Refer to the documentation that came with your RPS/EPS.)
Connect the RPS/EPS to the switch using one of the 6 supplied RPS cables.
Pin 1 Markings