16
8
Grouding Cautions
9
Cautions When Connecting I/O Signal Lines
PL
PL
Other
device
Other
device
Other
device
PL
• Set up a dedicated ground when
using the rear panel’s FG terminal.
• 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.
• If a dedicated ground is not pos-
sible, use a shared ground, as
shown in figure (b).
(c) Shared ground - not allowed
(a) Dedicated Ground
(b) Shared Ground - allowed
• 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.
© 2000 Digital Electronics Corporation. All rights reserved.
055091D .PLB910-MT01-BTHE
Be aware that the Digital Electronics Corporation shall not be held liable for any real or
estimated damages or losses, or third party claims resulting from the use of this product.
Note
