3Com 3C81600 User Guide - Page 27

Powering Up the Advanced RPS, Checking for Correct Operation

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Powering Up the Advanced RPS 27 Powering Up the Advanced RPS Once the Advanced RPS is in place, you can power up the unit. 1 Connect the AC power cord(s) to the power sockets (mains AC power inlets) at the rear of the RPS. The chassis will always draw power through mains inlet A (labelled Primary Pwr A) in preference to inlet B (labelled Backup Pwr B). You should ensure that your primary power source is always connected to inlet A, and the backup supply connected to inlet B. If using just one AC cable connect it to mains inlet A. 2 Connect the DC cables to the power modules and SuperStack units, if you have not already done so. See "Connecting the DC Cables" on page 25. 3 Once all the cables are securely connected, the Advanced RPS is ready to operate. There is no ON/OFF switch on the Advanced RPS. To start the Advanced RPS, plug the AC power cord(s) into a mains outlet. Checking for Correct Operation When powered up, the INPUT LEDs should light green. Only one LED lights if there is only one AC power cord connected. If a power module is supplying power to a SuperStack unit then the OUTPUT LED corresponding to this power module will light green. See "LEDs" on page 12. There is an approximate 5-second time delay after power up before the power module becomes active and the LED lights on the chassis front panel. Additional Information Many products in the SuperStack range have an auto-enable feature. These products are indicated with an asterisk (*) in Appendix C. This permits the SuperStack product to be connected to the mains and to the Advanced RPS at the same time. This is called managed redundancy. With Type 1 and 2 Power Modules configured for managed redundancy, if the SuperStack unit's mains fails, the Advanced RPS will automatically cut in to provide power to the SuperStack unit after about 5 seconds. The unit may reset, as in a power cycle.

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Powering Up the Advanced RPS
27
Powering Up the Advanced RPS
Once the Advanced RPS is in place, you can power up the unit.
1
Connect the AC power cord(s) to the power sockets (mains AC
power inlets) at the rear of the RPS. The chassis will always draw
power through mains inlet A (labelled Primary Pwr A) in preference
to inlet B (labelled Backup Pwr B). You should ensure that your
primary power source is always connected to inlet A, and the backup
supply connected to inlet B. If using just one AC cable connect it to
mains inlet A.
2
Connect the DC cables to the power modules and SuperStack units,
if you have not already done so. See
“
Connecting the DC Cables
”
on
page 25.
3
Once all the cables are securely connected, the Advanced RPS is
ready to operate. There is no ON/OFF switch on the Advanced RPS.
To start the Advanced RPS, plug the AC power cord(s) into a mains
outlet.
Checking for Correct Operation
When powered up, the INPUT LEDs should light green. Only one LED
lights if there is only one AC power cord connected. If a power
module is supplying power to a SuperStack unit then the OUTPUT
LED corresponding to this power module will light green. See
“
LEDs
”
on page 12.
There is an approximate 5-second time delay after power up before
the power module becomes active and the LED lights on the chassis
front panel.
Additional Information
Many products in the SuperStack range have an auto-enable feature.
These products are indicated with an asterisk (*) in Appendix C. This
permits the SuperStack product to be connected to the mains and to
the Advanced RPS at the same time. This is called managed
redundancy. With Type 1 and 2 Power Modules configured for
managed redundancy, if the SuperStack unit
’
s mains fails, the
Advanced RPS will automatically cut in to provide power to the
SuperStack unit after about 5 seconds. The unit may reset, as in a
power cycle.