4.6 Wiring Procedures and
Precautions
CAUTION
Once all wiring is complete, check the connections
before applying power to the system. Incorrect
arrangements or wiring may cause a unit
malfunction or damage.
Be sure to observe the following precautions to
ensure correct wiring.
(1) Lay wiring as far as possible from electrical noise
sources such as large capacity transformers, motors,
and power supplies.
(2) Remove the terminal cover and dustproof plug from
electrical connections before wiring.
When opening the cover of an explosion protected
type turn the locking screw to the right while referring
to Figure 4.7 to unlock it. Also, when the cover is
closed after wiring, be sure to turn the locking screw
to the left to lock it.
(3) Use of a exible metal conduit and a duct for wiring
for waterproong or for protecting electrical wires
from damage is recommended (see Figures 4.8 and
4.9).
F0410.ai
Locking screw
(terminal box side)
Locking screw
(amplifier unit side)
Figure 4.7 Locking Screw
Flexible Metal Conduit
Drain Fitting
Tee
Steel Conduit
Figure 4.8 Wiring Example (Integral Flowmeter/
Remote Sensor)
Flexible Metal Conduit
Drain Fitting
Tee
Terminal Box
Steel Conduit
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Figure 4.9 Wiring Example (Remote Transmitter
(VY4A))
<4. Wiring>
30
IM 01F07A01-01EN
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