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4.4 Grounding
CAUTION
Do not wire cables and replace parts
when power is supplied.
Do not work on piping and wiring with wet hands.
DON’T
Wiring work and replacing
parts in the power-on state
may cause electric shock.
DON’T
Wet hands may result in electric shock.
(1) Grounding of the GF630/LF600F and GF630/LF610F type
Ground as shown in Figure 4.12. Make the grounding wire as short as possible. Use grounding
wire material of IV wire 5.5mm
2
or more. Do not share a grounding wire with other
instruments where grounding current may flow. (An independent grounding is preferable.)
Figure 4.12 Grounding the GF630/LF600F and GF630/LF610F Type
Please connect the ground cables
of detector to piping using the M5 screw
shown as Figure4.13 as needed.
(In the case that there are no threaded hole
with piping, please tap the threaded hole.)
※It is necessary to connect the ground cable
surely electrically.
grounding resistance
100ohm or less
•In the case that the piping is conductive material,
connect the ground cables to the both ends of the
piping flange.
• In the case that the piping is non-conductive material,
use grounding rings.
Integral
Conductive material pipe
Example: Metal, etc.
Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.
Grounding wire
grounding ring
Grounding terminal
grounding resistance
100ohm or less
A
Figure4.13 Grounding wire connection
(Detail of part A)
M5
Ground cable of detector