Optional Connections - Tripp Lite SmartOnline SUPDMB5 Owner's Manual

Optional Connections

Your UPS will function properly without these connections.
1
USB and RS-232 Dry Contact Communications
Use the included USB cable (see figure
serial cable (see figure
1b
of your computer to the communication port of your UPS. Install
on your computer the Tripp Lite PowerAlert Software appropriate
to your computer's operating system. Consult your PowerAlert
manual for more information.
1c RS-232 dry contact communications are simple, but some
knowledge of electronics is necessary to configure them. The
RS-232 port's pin assignments are shown in the diagram. If the
UPS battery is low, the UPS sends a signal by bridging pins 8
and 5. If utility power fails, the UPS sends a signal by bridging
pins 1 and 5. To shut the UPS down remotely, short pin 3 to pin
9 for at least 4 seconds. Additional functions of these pins can
be configured through the LCD or via Web management
accessory card communication.
Assignment Description
PIN RS-232
1
2 UPS TxD
3 UPS RxD
4 Reserved
5 GND
6 Reserved
7
8
9
Rating and characteristics of pin 1 and 8 to GND
Parameter
Maximum collector
voltage
Maximum collector
current
Maximum reverse
collector voltage
Maximum leakage
current
Typical voltage drop
) and/or RS-232
1a
) to connect the communication port
Dry Contact
Utility Fail (Open Collector)
Remote Shutdown (5-12V)
Reserved
GND
Reserved
Low Battery (Open Collector)
+12V (1KΩ source)
Value Conditions
30V
10mA
-5V
0.1μA Collector voltage = 20V,
pin function is not active
0.5V Collector current = 5mA,
pin function is active
1a Your model may differ.
1b Your model may differ.
1c
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