A-41
Catalyst 4500 E-Series Switches Installation Guide
OL-13972-02
Appendix A Power Supply Specifications
6000 W AC-Input Power Supply
Ferrite Bead
A plastic bag containing one ferrite bead and two 4-inch plastic ties is included with the 6000 W power
supply AC power cords. The ferrite bead is a passive device that limits high-frequency interference on
interface and control cables and is only required when you install the remote power-cycling feature that
is supported by the 6000 W power supply. The ferrite bead is installed on the two control wires that come
from the relay controller box to the terminal block on the 6000 W power supply. The ferrite bead should
be installed as close as possible to the power supply terminal block for the bead to be effective. You do
not need the ferrite bead for 6000 W power supply installations that do not include the remote
power-cycling feature. If you need to install the ferrite bead, see the
“Installing the Ferrite Bead”
procedure on page 4-21
.
Remote Power-Cycling Operation
This feature allows you to remotely power cycle the Catalyst 4500 E-series switch using any appropriate
third-party relay controller. This feature eliminates the need for you to have access to the supervisor
engine console or CLI to control power cycling.
Table A-34
lists the relay controller box relay type, the
corresponding power supply terminal block positions, and a description of the power-cycling operation.
Table A-34
6000 W Power Supply Relay Controller Switch Settings and Operation
External Relay
Controller Box Relay
Type
Power Supply Terminal Block Positions Used
Remote Power-Cycling Operation
Normally open
(NO) relay.
The +V pin is internally pulled up to 12 VDC
with a 10 K ohms pull up resistor, and pin IN is
connected to the input pin (either pin 1, 4, 10, or
13) of the line receiver.
•
Power supply cycled from on to off. The
power supply is powered off by energizing
the relay (relay contacts go from open to
closed) for more than 5 seconds.
•
Power supply cycled from off to on. The
power supply is powered on by reenergizing
the relay (relay contacts go from closed to
open) after a 10 second delay.
RS232 driver.
Pin IN is connected to the input pin (either pin
1, 4, 10, or 13) of the line receiver, and pin GND
is connected to ground. A capacitor of 1 uF
should be used between the line receiver input
and the ground to bypass noise peaks.
•
Power supply cycles from on to off. The
power supply is powered off by RS-232
logic HI for more than 5 seconds.
•
Power supply cycles from off to on— The
power supply is powered on by RS-232 logic
LO after a 10 second delay.
No relay attached.
Remote power-cycling
feature not installed.
—
—
