Lucent Technologies Uninterruptible Power Systems 3000 VA - Manual (Page 61)

Communication 5
Lucent Technologies Model 3000 UPS Operator's Manual (167Ć405Ć119 Issue 3)
51
UPS Communications Interface Port
In addition to configuring the UPS for specific communication options, you must
also ensure proper use of the serial port when connecting the UPS to your network
or monitoring equipment.
NOTE Semiconductor switch contacts are rated at a maximum current of 50 mA and a
maximum of +40 Vdc across the contacts. Do not apply any negative voltage to these
contacts.
Use only the pins specified for your communications configuration. The use of any
additional pins for any of the following interfaces can cause interference with
system communications.
Even though your network uses the specified signal lines, the pins assigned to these
signals at the network end of the cable may vary with those of the UPS serial port.
The connector body and style may vary as well.
NOTE Standard, pinĆforĆpin cables may not work correctly. Consult your network
software or server manuals for system shutdown pin assignments.
The UPS serial port complies with EIA RSĆ232 standards. RSĆ232 specifies a
maximum cable length of 50 feet. See Figure 21 for the location of the serial port.
UPS Rear Panel
Serial Port Detail
Serial
Port
Figure 21. Serial Port Location
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