American Power Conversion Master Switch manual Outlets always turn on, Threshold has been exceeded

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Introduction

Operating MasterSwitch VM continued

Current sensing Each MasterSwitch VM unit is equipped with a sensor that measures the total current being used by the unit and devices connected to the unit. The current measurement is displayed on the first screen that appears when you log on and is used to generate alarms that you define. The values displayed are:

•The aggregate current

•A percentage of the branch circuit rating, which is derived using the following formula:

In the Unit Configuration section of the MasterSwitch VM menu, you can define Overload Outlet Restrictions, conditions that generate an Overload Audible Alarm, and the Low Current Threshold. (See Unit Configuration on page 16 for a detailed description of the items listed in the menu.)

Do not exceed the maximum voltage and current ratings listed on the label on the back of the unit.

Overload Outlet Outlet Restrictions prevents users from turning on outlets when the

Restrictionscurrent sensor detects an overload condition. The following restrictions can be set for each unit:

None

Outlets always turn on.

On Warning

Outlets do not turn on when the Overload Warning

 

Threshold has been exceeded.

On Overload Outlets do not turn on when the full load percentage exceeds 100%.

Overload Audible

You can customize the Overload Audible Alarm so that it never sounds,

Alarm

it sounds when the load exceeds 100%, or it sounds when the load

 

exceeds its Overload Warning Threshold. The value for the Overload

 

Warning Threshold can be set at a value that you determine based on

 

the needs of your system. If the Overload Audible Alarm is set to On

 

Overload Warning and the load exceeds the Overload Warning

 

Threshold, the Overload Warning LED flashes green and the alarm

 

sounds.

Low Current

In addition to monitoring for overload conditions, the current sensor

Threshold

monitors for low-current conditions. If current drops below the Low

 

Current Threshold that you have defined, the unit generates an SNMP

 

trap to alert the host computer.

 

Note: This item is available only in the SNMP interface.

MasterSwitch VM User’s Guide

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Contents MasterSwitch VM Thank You MasterSwitch VM ContentsContents Specifications Warranty InformationTroubleshooting Life-Support PolicyProduct Description Feature DescriptionIntroduction MasterSwitch VM Controller IntroductionLEDs Status DescriptionOperating MasterSwitch VM Configuring outlets for operation Is turned on When these two delays expire, the outlet will be turned on Outlet will be turned on Threshold has been exceeded Outlets do not turn on when the Overload WarningOutlets always turn on Overload Warning and the load exceeds the Overload WarningManaging MasterSwitch VM Management InterfacesInterface Managing MasterSwitch VMControl Console Telnet, for remote managementManaging MasterSwitch VM Account, and up to 16 Outlet User accounts Password-Protected AccountsAccount access to Outlets and menuMenu Items OutletsMenu Items OutletsMasterSwitch VM Unit ConfigurationOutlet Configuration Links Dir. You will see a listing similar to the following ftpdir Event LogInterface or by pressing C TRL + L in the Control Console Similar to the following MasterSwitch VM unit always uses four-digit yearRepresentation when logging and displaying event data However, you may need to select a four-digit date formatNetwork TCP/IPDefinition Snmp Access ControlTelnet/Web Snmp Trap Receiver Trap Receiver IP toItems SystemUser Manager For Outlet User Manager Outlet UserManager File Transfer IdentificationDate/Time Enable Bootp ToolsHelp Security Features SecurityAuthentication SecurityInterface Security Access MethodsWarranty Information Product InformationTroubleshooting Product InformationLife-Support Policy MasterSwitch VM power distribution unit AP9221X166 SpecificationsFollowing table shows the product specifications for ProductMasterSwitch VM Controller AP9221NX166 AP9221NX166Help Features IndexOutlet Access Outlet operations IndexAPC Worldwide Customer Support Regional centers
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