Liebert 610 Customer Alarm Interface, Temperature-Compensated Charging, Battery Load Testing

Introduction

12.Customer Alarm Interface

This optional interface board allows the input and display of 8 alarms from customer-supplied contacts, each with a customer-selected name of up to 16 characters. The following attributes can be user programmed for each alarm: latching, summary, freeze history, sound horn, auto-dial and time delay (0 to 999.9 seconds).

13.Temperature-Compensated Charging

When battery temperature climbs above a preset limit (typically 77 degrees F), this optional cir- cuit proportionally reduces float charging voltage to prevent overcharging the battery.

14.Battery Load Testing

When activated, this option forces the battery string to assume the load for a short period of time. The UPS then compares the test results to data collected during the UPS commissioning to see if the battery system appears to meet specifications.

15.Automatic Restart

Designed for unattended sites, this option permits a UPS to automatically restart itself and bring itself online to support the critical load following an extended power outage.

8