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PL-6700 Series User’s Manual
Optional Units and Expansion Boards
• The grounding point must be as close to
the PL as possible, and the grounding
wires must be as short as possible. If the
wires must be long, use thick, insulated
wires and run them through conduits.
(a) Dedicated Ground *1
• Set up a dedicated ground when using
the rear panel’s FG terminal.
(b) Shared Ground - allowed *1
• If a dedicated ground is not possible, use
a shared ground, as shown in figure (b).
(c) Shared ground - not allowed
3
Grounding Cautions
PL
PL
Other
device
Other
device
4
Cautions When Connecting I/O Signal Lines
• I/O signal lines must be wired separately from the power circuit cable.
• If the power circuit cable needs to be wired together with the input/output
(I/O) signal lines for any reason, use shielded cables and ground one end of
the shield to the PL’s FG terminal.
• To improve noise immunity, it is recommended to attach a ferrite core to the
power cord.
Other
device
PL
*1 Use a grounding resistance of less than 100 U and a 2mm2 or thicker wire, or your
country’s applicable standard. For details, contact your local PL distributor.
.
Summary of Contents for PL-6700 Series
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