Liebert Power Supply - Manual (Page 8)

COMMUNICATIONS INTERFACE PORT
The PowerSure™ Interactive UPS contains a standard DB-9 receptacle located on
the rear of the UPS unit. Several signals are provided on this port and are assigned
as follows:
PIN ASSIGNMENT DESCRIPTION
1 Low Battery (open collector)
2 UPS TxD (typical RS-232 levels)
3 UPS RxD (typical RS-232 levels)
4 Remote Shutdown (5-12V DC, 1.0 mA. max.); battery operation
5 Common
6 No connection
7 Low Battery (open emitter)
8 Mains Fail (open emitter)
9 Mains Fail (open collector)
*Maximum voltage and current on pins 1, 7, 8, 9 is 80V DC; 10.0 mA.
UPS MONITORING
The PowerSure™ Interactive UPS has the capability of being monitored with stand
alone computers, network workstations, network servers, or UNIX hosts via the DB-9
receptacle located on the rear of the UPS.
This capability is used in applications requiring the UPS to provide status and power
monitoring information to the computer system. For example, during a mains power
failure, the information can be used by the computer’s operating system or application
program to automatically save information in buffers, to close files, and shut down
operations prior to battery capacity depletion.
Monitoring of the UPS via a computer system is easily made with a Liebert SiteNet®
1 shutdown kit (sold separately). Consult your local Liebert representative to
determine the correct software kit for your application. The kit includes special
purpose cable and shutdown software.
UPS INTELLIGENT COMMUNICATIONS
The PowerSure™ Interactive UPS has the capability to communicate intelligently with
stand alone computers, network workstations, network servers, or UNIX hosts via the
DB-9 receptacle located on the rear of the UPS. By purchasing the optional Liebert
SiteNet® 2 software package (sold separately), intelligent communications allows the
following capabilities:
• Quantitative monitoring of mains and UPS power
•
Quantitative monitoring of internal UPS parameters
• Periodic tests of battery quality and replacement notification
• Timed and delayed shutdown of the UPS
• Logging of power disturbances and anomalies
Consult your local Liebert sales representative for more information about SiteNet® 2
software.
UPS INTELLISLOT™ COMMUNICATIONS
The PowerSure™ Interactive UPS contains an Intellislot™ communications port for
the optional internal Ethernet SNMP card. Optional SiteNet® SNMP Manager
software is available to allow communication through several network management
systems. Contact your local Liebert representative, dealer, or reseller.
CAUTION: TO MAINTAIN SAFETY (SELV) BARRIERS AND FOR
ELECTROMAGNETIC COMPATIBILITY, SIGNAL CABLES SHOULD BE
SEGREGATED AND RUN SEPARATELY FROM ALL OTHER POWER CABLES,
WHERE APPLICABLE.
MAINTENANCE
The PowerSure™ Interactive UPS requires very little maintenance. The batteries are
valve regulated, nonspillable, lead acid, and require that they be kept charged to
obtain their designed life. The UPS continuously charges the batteries when
connected to the mains supply.
When storing the UPS for any length of time, it is recommended to plug the UPS in
for at least 24 hours every four to six months to ensure full recharge of the batteries.
The PowerSure™ Interactive UPS is designed to allow the user to safely replace the
batteries. Read the safety cautions before proceeding. Contact your dealer to obtain
the appropriate replacement battery kit.
Collector to Emitter* Pin Assignment
15 16