Tripp Lite SU3000RTXL3UHV Owner's Manual for SmartOnline UPS 932609 - Page 9
Output Circuit Breakers Switches Select Models Only, Input Cord Select Models Only, AC Receptacles
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200608121 93-2609 SU Owner's Manual.qxd 10/3/2006 3:32 PM Page 9 Basic Operation (continued) Rear Panel continued Output Circuit Breakers Switches (Select Models Only): These resettable circuit breakers protect your UPS from output overload. If one or both breakers trip, remove some of the load on the circuit(s) and allow the UPS to cool before pressing the breaker switch(es) in to reset. Input Cord (Select Models Only): This permanently attached power cord connects your UPS to a power outlet. NEMA 5-15R NEMA 5-15/20R Other outlet types not shown AC Receptacles (Varied by Model): These 15-, 20- and 30-amp receptacles provide your connected equipment with pure sine-wave AC output from the AC line during normal operation and from battery power during blackouts and severe brownouts. Power provided at these outlets is filtered to protect connected equipment against damaging surges and line noise. The receptacles are divided into numbered load banks, as labelled on the unit. Using PowerAlert software and cabling, load banks one and two may be individually turned off and on from a remote location, allowing users to reset or reboot connected equipment. See Serial Port Connection under Optional Connections. Communications "SMART" DB9 Port: Your UPS's DB9 port can be used to monitor and control your UPS using either RS-232 or dry contact protocols. It can also be used to connect an emergency power off (EPO) switch. RS-232 communications are very complex, but are easy to implement. The easiest way monitor and control the UPS using RS232 is to connect the UPS to a computer with a DB9 cable and install Tripp Lite's PowerAlert software on the connected computer. Dry contact communications are simple, but some knowledge of electronics is necessary to configure them. The DB9 port's pin assignments are shown in the diagram at the left. If the UPS battery is low, the UPS sends a signal by bridging pin 1 and pin 5. If utility power fails, the UPS sends a signal by bridging pin 8 and pin 5. To shut the UPS down remotely, send a 5V to 12V signal on pin 3 (using pin 5 as the (negative) ground) for at least 3.8 seconds. You may connect your UPS to an EPO switch and a computer at once using a Tripp Lite EPO cable (not included; order accessory #73-0901 from Tripp Lite). Follow the connection procedures included with the EPO Cable. 9