
LF410/LF600 LF410/LF602
Wiring Precautions
(1)Explosion proof type flowmeters are not provided cable glands.
Refer to the part Cable connection port at detector and converter.
(2)Connect the grounding wire (IV wire 5.5mm² or more) to a good earth ground (100Ω or less ground resistance). Make the wire as short as possible. Do not use a common ground shared with other equipment where earth current may flow. An independent earth ground is recommended.
(3)The allowable cable lengths between the detector and converter for the separate type flowmeter depend on the electrical conductivity of the object fluid. See Figure 12 below.
(4)DO1, DO2 (opt.), and DI (opt.) use the same common terminal (COM). This COM can not connect to other equipments which have their own ground terminal.
(Power supply for connecting to DI or DO, etc…) Need to wire separately.
Wiring Precautions (PROFIBUS)
(1)For wiring path, avoid places near electrical equipment that may cause electromagnetic induction or electrostatic induction interference (such as a motor, transformer and wireless transmitter).
(2)Use a
(3)General
(4)When you carry out cable end treatment of
(5)Consider installing a
(6)The electromagnetic flowmeter is not equipped with terminating resistors.Use the terminating resistor unit for
(7)Only one
| 300 |
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| 200 |
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(m) | 100 |
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50 |
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cable length |
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30 |
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10 |
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Allowable | 5 |
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3 |
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| 3 | 5 | 10 20 30 | 50 100 200 |
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| Conductivity (μS/cm) |
Figure 12. Electrical Conductivity and
Cable Length
10