Allied-telesis SwitchBlade 4000 Series Switch Hardware Reference Manuel d'utilisateur télécharger pdf (Page 32)

32 SwitchBlade 4000 Series Switch

C613-03060-00 REV H

Alarm Relays and Monitoring

This section provides an introduction to the SwitchBlade’s alarm and

monitoring capabilities. All SwitchBlade chassis have two alarm relays on their

rear panel, and extensive software-based logging, SNMP trap, and trigger

monitoring capability.

Alarm Relays

The SwitchBlade’s two alarm relays (“Major” and “Minor”) can be configured

to operate when a number of different environmental and operational events

occur. Users can choose which relay (major or minor) operates for a specific

event. The relays do not operate by default, they will only operate if

specifically configured to do so.

The relays are designed to operate in DC circuits. When placed in these circuits

the relays can operate external alarm devices such as small alarms, lights, or

larger relays. If connecting the relays to a 12VDC circuit, they can switch 1

amp. If connecting the relays to a 48VDC circuit, they can switch 0.5 amp. The

relays have normally open (N/O) and normally closed (N/C) contact options.

Connecting the relays to an AC circuit is likely to damage the relays and switch.

Table 1 on page 32 lists the events that can operate alarms. Refer to

“Environmental Monitoring” on page 4-15 of Chapter 4, Configuring and

Monitoring the System for information on configuring alarm relays, including

complete command descriptions.

Table 1: Alarm and monitoring events.

Event Description

Fan tray presence Initiates an alarm event if a fan tray is removed for more

than 20 seconds. Initiates a monitoring event when a fan

tray is removed.

Fan tray fan status Initiates alarm and or monitoring events when a fan tray fan

fault is detected.

Fixed CPU high temperature Initiates alarm and or monitoring events if CPU temperature

rises above 90º C (194º F). Temperature is measured at the

master switch controller CPU and slave switch controller

CPU.

Settable CPU Temperature Initiates alarm and or monitoring events if CPU temperature

rises above a value defined by the user. Temperature is

measured at the master switch controller CPU and slave

switch controller CPU.

ALARM RELAYS

MINOR ALARM

N/O N/C

COMMON

MAJOR ALARM

N/O N/C

COMMON

, 1A

, 0.5A

12 VDC

48 VDC

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 63 64

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