Tripp Lite SU3000RTXL2U Owner's Manual for SmartOnline UPS 932835 - Page 12

Communications

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3. Operation (continued) 3.5 Communications USB RS-232 (DB9) Communication Ports (USB and/or RS-232): These ports connect the UPS system to a computer. Use with Tripp Lite's PowerAlert software and included cabling to allow the computer to automatically save open files and shut down during a blackout. Also use PowerAlert software to control UPS system load banks and monitor a wide variety of AC line power and UPS system operating conditions. See Optional Connections section for cable connection instructions. Refer to the PowerAlert documentation for software installation instructions. The RS-232 port can also be used as a contact closure port. The port's numbered pin assignments are shown in the RS-232 (DB9) illustration at left. If the battery charge level is low, the UPS system will bridge pins 1 and 5. If utility power fails, the UPS system will bridge pins 8 and 5. To shut down the UPS system remotely, short pin 3~pin 9 for at least 3.8 seconds. EPO (Emergency Power Off) Port: The UPS system has an EPO port that may be used to connect the UPS system to a contact closure switch to enable emergency UPS system shutdown. See Section 2.4: Optional Connections for more information. If the unit has been shut down due to an EPO event, it will be necessary to disconnect the unit from utility power to reset the unit. After re-connecting to utility power, see section 2.3 Installation for start-up instructions. 12 201102140 932835.indb 12 3/29/2011 4:50:21 PM

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12
RS-232 (DB9)
3. Operation
(
continued
)
Communication Ports (USB and/or RS-232):
These ports connect the UPS
system to a computer. Use with Tripp Lite’s PowerAlert software and
included cabling to allow the computer to automatically save open files and
shut down during a blackout. Also use PowerAlert software to control UPS
system load banks and monitor a wide variety of AC line power and UPS
system operating conditions. See
Optional Connections
section for cable
connection instructions. Refer to the PowerAlert documentation for software
installation instructions.
The RS-232 port can also be used as a contact closure port. The port’s
numbered pin assignments are shown in the RS-232 (DB9) illustration at left.
If the battery charge level is low, the UPS system will bridge pins 1 and 5. If
utility power fails, the UPS system will bridge pins 8 and 5. To shut down
the UPS system remotely, short pin 3~pin 9 for at least 3.8 seconds.
EPO (Emergency Power Off) Port:
The UPS system has an EPO port that may
be used to connect the UPS system to a contact closure switch to enable
emergency UPS system shutdown. See
Section 2.4: Optional Connections
for
more information. If the unit has been shut down due to an EPO event, it will be
necessary to disconnect the unit from utility power to reset the unit. After
re-connecting to utility power, see section 2.3 Installation for start-up instructions.
3.5 Communications
USB
201102140 932835.indb
12
3/29/2011
4:50:21 PM