Cisco WS-C1924-EN-DC - 100Mbps Ethernet Switch Uživatelský manuál stáhnout pdf (Strana 12)

Rear-Panel Description

Catalyst 1900 Series Installation and Configuration Guide

1-12

Power Connectors

Warning Attach only the Cisco RPS (model PWR600-AC-RPS) to the RPS connector.

You can provide power to the switch either by using the switch internal AC power supply

or by connecting the optional Cisco 600W AC Redundant Power System (RPS) to the RPS

connector on the switch.

The internal power supply is an autoranging unit that supports input voltages of 90 to

127 VAC or 200 to 250 VAC. To use the internal power supply, connect one end of the

supplied power cord to the AC power connector on the switch and the other end of the

power cord to an AC power outlet.

The RPS can provide a quasi-redundant power source for four external devices that use up

to 150W DC each. You can use a one-to-one cable (one connector at each cable end) to

connect four external devices to the four DC output power modules. The power source is

quasi-redundant because there are two AC input power modules for the RPS and one DC

output power module for each external device. The AC input to the RPS is fully redundant,

but the DC output to the external devices is not.

Note The Catalyst 1900 switches do not support the fully-redundant conﬁgurations that

are described in the Cisco RPS documentation. In addition, we recommend that you do not

use the redundant-with-reboot conﬁguration with the switch connected to the RPS and to

the AC power plug, due to the reboot and downtime—approximately 30 seconds. If you do

use the redundant with reboot conﬁguration, always power up the switch before you power

up the RPS to ensure correct operation. In circumstances where the RPS is ﬁrst to power

up, the LEDs might not indicate the actual state.

For information about the RPS LED, see the “Redundant Power Supply LED” section on

page 1-7. For complete information about the RPS, refer to the Cisco RPS documentation.

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Cisco WS-C1924-EN-DC - 100Mbps Ethernet Switch Uživatelský manuál Strana 12