4.7 Grounding
(1) Ground by D class grounding (grounding resistance
of 100Ω or less).
IMPORTANT
If a lightning protector (option code /A) is installed,
ground by a C class grounding (grounding
resistance 10Ω or less).
(2) As shown in Figure 4.10, a grounding terminal is
located on the inside and outside, respectively. Either
of these terminals may be used.
(3) In the case of a remote transmitter, ground the
sensor side.
(4) Use 600 V PVC insulated wire for grounding.
Example: Integral Flowmeter
Grounding Terminal
Figure 4.10 Grounding Terminal
4.8 Lightning Protector (option
code: /A)
When screw-fastening the lightning protector
(Figure 4.11), match the terminals on the lightning
protector module with terminals of the same shape
on the terminal block.
When replacing the lightning protector (Figure
4.11), remove the screws from the terminal block,
then screw-fasten the terminals on the lightning
protector module matched to terminals of the same
shape on the terminal block. Wire according to the
wiring instruction label at the top of the lightning
protector module.
In the case of communication and input/output code
JA, "SUPPLY +,-, D
OUT
+,-" is indicated on the wiring
instruction label. In the case of communication and
input/output code JB, "SUPPLY +,-, D
OUT
+,-, A
IN
+,-"
is indicated on the wiring instruction label.
Lightning protector module
Wiring instruction label
Figure 4.11 Lightning Protector Module
<4. Wiring>
31
IM 01F07A01-01EN
Wiring
4
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