Chapter 3 – Installation and Wiring
3–8
GLC2300 Series User Manual
3.2.3
Grounding
Do NOT use common grounding, since it can lead to an
accident or machine breakdown.
CAUTION
(A) Exclusive Grounding (BEST)
Connect the
FG
terminal found on the back of the
GLC
to an exclusive ground
(diagram A).
(B) Common Grounding (OK)
•
Make sure that the grounding resistance is less than 100
Ω
Ω
Ω
Ω
Ω
.
•
FG and SG terminals are internally in the GLC.
•
When connecting the SG line to another device, be sure that the
design of the system/connection does not produce a shorting loop.
•
The grounding wire should have a cross-sectional area of at least
2 mm
2
. Create the grounding point as close to the GLC unit as pos-
sible, and keep the wire as short as possible. Replace thin wire with
a thicker wire, and place it in a duct.
If exclusive grounding is not possible, use a common connection point (diagram B).
(C) Common Grounding (Not OK)
If the equipment does not function properly when grounded,
disconnect the ground wire from the FG terminal.
