Uninterruptible Power Supply Control (Ups); Managed Ups Connections - Tripp Lite B092-016 Owner's Manual

Chapter 8: Power and Environment
8.2

Uninterruptible Power Supply Control (UPS)

The Console Servers manage UPS hardware using Network UPS Tools (refer Section 8.2.6 for an overview of embedded open
source Network UPS Tools - NUT software)
8.2.1

Managed UPS connections

A Managed UPS is a UPS that is connected by serial or USB cable or by the network to the Console Server. The Console
Server becomes the Master of this UPS, and runs a upsd server to allow other computers that are drawing power through the
UPS (Slaves) to monitor its status and take appropriate action (such as shutdown in event of low battery).
The Console Server may or may not be drawing power through the Managed UPS (see the Configure UPS powering the
Console Server section below).
When the UPS's battery power reaches critical, the Console Server signals and waits for Slaves to shutdown, then powers off
the UPS.
Serial and network connected UPS's must first be configured on the Console Server with the relevant serial control ports
reserved for UPS usage, or with the UPS allocated as a connected Host:
• Select UPS as the Device Type in the Serial & Network: Serial Port menu for each port which has Master control over a
UPS and in the Serial & Network: Network Hosts menu for each network connected UPS (refer to Chapter 4)
No such configuration is required for USB-connected UPS hardware.
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