Chapter 4 - Installation and Wiring
4-12
PL-5910 Series User Manual
*1
Use a grounding resistance of less than 100
Ω
and a 2mm
2
or thicker wire, or your
country’s applicable standard. For details, contact your local PL distributor.
4.3.3 Grounding Cautions
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 unit’s FG
terminal.
• To improve noise immunity, attaching a ferrite core to the power cord is recom-
mended.
• 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
figure (b).
• The grounding point must be as close
to the PL as possible, and the ground-
ing wires must be as short as possible.
If the wires must be long, use thick,
insulated wires and run them through
conduits.
PL
PL
Other
device
Other
device
Other
device
PL
(b) Shared Ground - allowed *1
(a) Dedicated Ground - best
*1
(c) Shared ground - not allowed
