4.9
CE Mark Installation Requirements
The following requirements for surge, electrostatic discharge (ESD), and fast transient
burst (FTB) protection must be met for applications that require CE Mark listing:
•
The VersaMax PLC is considered to be open equipment and should therefore be
installed in an enclosure (IP54).
•
This equipment is intended for use in typical industrial environments that utilize
anti-static materials such as concrete or wood flooring. If the equipment is used in an
environment that contains static material, such as carpets, personnel should discharge
themselves by touching a safely grounded surface before accessing the equipment.
•
If the AC mains are used to provide power for I/O, these lines should be suppressed
prior to distribution to the I/O so that immunity levels for the I/O are not exceeded.
Suppression for the AC I/O power can be made using line-rated MOVs that are
connected line-to-line, as well as line-to-ground. A good high-frequency ground
connection must be made to the line-to-ground MOVs.
•
AC or DC power sources less than 50V are assumed to be derived locally from the
AC mains. The length of the wires between these power sources and the PLC should
be less than a maximum of approximately 10 meters.
•
Installation must be indoors with primary facility surge protection on the incoming
AC power lines.
•
In the presence of noise, serial communications could be interrupted.
68
GFK-1503E
VersaMax PLC User Manual
For public disclosure
Содержание VersaMax PLC
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