Grounding Cautions; Cautions When Connecting I/O Signal Lines - PROFACE PL-B910 Series User Manual

Installation and Wiring

4.3.3 Grounding Cautions

(a) Dedicated Ground - best *1
(b) Shared Ground - allowed *1
(c) Shared ground - not allowed
PL

4.3.4 Cautions When Connecting I/O Signal Lines

• I/O signal lines must be wired separately from charged lines. If the power cord
needs to be wired together with the (I/O) signal lines for any reason, use
shielded lines and ground one end of the shield to the PL's FG terminal.
• To improve noise immunity, attaching a ferrite core to the power cord is recom-
mended.
*1 Use a grounding resistance of less than 100 Ω and a 2mm
country's applicable standard. For details, contact your local PL distributor.
.
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• Set up a dedicated ground when using
the rear panel's FG terminal.
• If a dedicated ground is not possible,
use a shared ground, as shown in fig-
ure (b).
• The grounding point must be as close
to the PL as possible, and the ground-
ing wires must be as short as pos-
sible. If the wires must be long, use
thick, insulated wires and run them
through conduits.
2 or thicker wire, or your
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