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5.4 Wiring
IMPORTANT
The cable connections are not provided in the conduit port of this apparatus.
Please prepare yourself for the cable connections which could be used in Division2 hazardous locations.
Do not wire cables and replace parts when
power is supplied.
DON'T
5.4.1 Grounding
(1) Grounding the LF620F type
LF620F
Ground as shown in Figure 5.3. Make the grounding wire as short as possible. Use grounding wire
material of IV wire 5.5mm
grounding current may flow. (An independent grounding is preferable.)
Conductive material pipe
Example: Metal, etc.
• If the piping material is conductive, connect
the grounding wires to the both ends of the
piping flange.
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CAUTION
Wiring work and replacing
parts in the power-on state
may cause electric shock.
2
or more. Do not share grounding wire with other instruments where
Grounding terminal
Grounding wire
Figure 5.3 Grounding the LF620F Type
－ 27 －
Do not work on piping and wiring with wet hands.
Wet hands may result in electric
shock.
DON'T
• If the piping material is non-conductive, perform
grounding resistance 100Ω or less.
6 F 8 A 0 9 2 8
Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.
grounding resistance
100Ω or more
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