Rockwell Automation 57C570 AutoMax PC3000 User Manual - Manual (Page 247)

BĆ3
5. Connect the AutoMax PC3000 Packaged Version to a protective ground with
an individual ground wire. A protective ground terminal is provided on the
PC3000 chassis. It is located below the input terminal block and marked
with an appropriate international symbol. The ground wire must be selected
in accordance with appropriate international and national standards.
6. AutoMax DCSĆNET and AllenĆBradley Remote I/O cable systems must be
installed in accordance with the requirements described in their instruction
manuals.
7. RSĆ232/RSĆ422 cables connecting user devices to ports A and B on the
Serial card must be shielded. Cable connectors must have EMI/RFI shielded
cable clamps attached to the cable shield. No other measures are needed
since the cable shield is grounded at the PC3000. Cable lengths must not
exceed 10 m (33 ft.). For longer distances, use CE marked modems or
equivalent devices. Power them from the same control transformer as the
PC3000 to which they are connected.
AutoMax PC3000 Installed in a PC Chassis
For an AutoMax PC3000 installed in a PC chassis to be compliant with the
European Union EMC and Low Voltage Directives, use a CEĆmarked PC and
follow the installation instructions published in the PC's manual as well as the
instructions in points 6 and 7 above. If necessary, use a CEĆmarked
uninterruptable power supply (UPS).