Grounding; I/O Signal Line Placement - Pro-face GP-2401T User Manual

3.2.3 Grounding

Do not use common grounding, since it can lead to an acci-
dent or machine breakdown.
(a) Exclusive Grounding (BEST)
(b) Common Grounding (OK)
(c) Common Grounding (Not OK)

3.2.4 I/O Signal Line Placement

Input and output signal lines must be separated from the power control cables
for operating circuits.
If this is not possible, use a shielded cable and connect the shield to the GP's
frame.
*1 Use a grounding resistance of less than 100W and a 2mm
or your country's applicable standard. For details, contact your local GP distributor.
GP-2401/2501/2601 Series User Manual
Chapter 3 - Installation and Wiring
CAUTION
Connect the FG terminal found at
*1
the back of the GP to an exclusive
ground. [diagram (a)].
• Check that the grounding re-
sistance is less than 100 Ω Ω Ω Ω Ω .
• The SG and FG terminals are
connected internally in the
GP unit.
• When connecting the SG line
to another device, be sure
that the design of the system/
*1
connection does not produce
a shorting loop.
• The grounding wire should
have a cross sectional area
greater than 2mm
the connection point as close
to the GP unit as possible,
and make the wire as short,
as possible. When using a
long grounding wire, replace
the thin wire with a thicker
wire, and place it in a duct.
If exclusive grounding is not pos-
sible, use a common connection
point. [diagram (b)]
If the equipment does not function
properly when grounded, disconnect
the ground wire from the FG termi-
nal.
2 . Create
2
or greater thickness wire,
3-9