Connecting an external power supply (Optional)
The ProCurve 620 Redundant and External Power Supply (J8696A), referred to as the 620 RPS/EPS, is an accessory product for the 2910al
switches and specific other ProCurve switches. The 620 RPS/EPS provides
two types of power to the switches, however the 2910 switches do not use the
PoE power (EPS) portion of the 620 RPS/EPS.
These switches support the RPS or redundant portion of the 620 RPS/EPS.
Redundant power to one of up to two switches can be supplied to back up the
internal switch power supply in case of the internal power supply fails. Should
the internal switch power supply fail, power will be supplied from the 620 RPS/
EPS.
The 620 RPS/EPS is an unmanaged power supply that only provides
information by way of LEDs.
RPS operation
The RPS portion of the 620 RPS/EPS monitors the power signal from the
switch by detecting that the 620 RPS/EPS is connected to a switch with an
RPS cable. When the power from the switch is no longer detected, the 620
RPS/EPS will provide power to the switch within 1 millisecond.
The 620 RPS/EPS supports hot plugging of the RPS cable without causing a
reboot of the switch or causing the power supply in either the 620 RPS/EPS
or switch to shut down temporarily or permanently.
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 receive power.
The 620 RPS/EPS also has two EPS Ports which can not be used with the
2910al switches.
For redundant AC power, connect the 620 RPS/EPS to the switch using one
of the supplied RPS cables. RPS cables are 2 meters (6.56 feet) in length.
620 RPS/EPS LEDs
The 620 RPS/EPS LEDs are located on the front and back of the device. There
are two dual colored (green/orange) LEDs for each RPS and EPS port:
Device connected
Power status
Figure 1: Back of 620 RPS/EPS
1 - RPS port LEDs
2 - EPS port LEDs
3 - EPS ports, not used
4 - RPS ports
620 RPS/EPS LEDs
| LED
|
State and Meaning
|
|---|
| Power
(green)
|
On:
Off:
|
| Fault
(orange)
|
Off:
Blink
orange
1,3
:
On:
On briefly after the unit is powered on or reset, at the beginning of unit self test. If
this LED is on for a prolonged time, the unit has encountered a fatal hardware
failure, or has failed its self test.
|
| Temp Status
(green and orange)
|
On:
Blink
orange
2
:
|
| Fan Status
(green and orange)
|
On:
Blink
orange
1
:
|
| Device Connected
(green–over-laid
with the port
number)
|
On:
Off:
|
| Power Status
(green and orange)
|
On:
Off:
Blink
orange
1
:
|
| Port Status (also on back panel of the 620 RPS/EPS) |
|
NOTE:
|
1:
The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.2:
The blinking behavior is an on/off cycle once every 0.8 seconds, approximately.3:
Specific fault conditions can be viewed by checking switch log files. |
|
620 RPS/EPS connectivity
The 620 RPS/EPS can provide backup power support for up to two
ProCurve switches. In fig 2 shown below, two ProCurve Switch 2910s are
connected to the RPS ports on a 620 RPS/EPS.
Figure 2: Connecting RPS to 2 switches
Printable version
