Grounding Cautions; Cautions When Connecting I/O Signal Lines - PROFACE PL-5700 Series Manual

3

Grounding Cautions

(a) Dedicated ground
(b) Shared ground allowed
(c) Shared ground not allowed
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.
*1 Use a grounding resistance of less than 100 Ω and a 2mm
4-8
PL
Class III Ground
PL
Class 3
PL
or your country's applicable standard. For details, contact your local GP distributor.
• Set up a dedicated ground when using
Other
the rear panel's FG terminal.
device
Figure (a) = Class III Ground with a maxi-
mum grounding resistance of 100Ω.
• If a dedicated ground is not possible, use
Other
a shared ground, as shown in figure (b).
device
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.
Other
device
Installation and Wiring
2
or greater thickness wire,
PL-5700 Series User's Manual