Yokogawa digitalYEWFLO (DY) - Manual (Page 27)

<4. WIRING>
4-8
IM 01F06A00-01EN
4.6 Wiring Procedures and
Precautions
NOTE
Once all wiring is complete, check the
connections before applying power to the
instrument. Improper arrangements or wiring
may cause a unit malfunction or damage.
(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
of an electrical connection before wiring. When
you open the cover of explosion proof type(*),
turn the Locking Screw to the right, and unlock.
When you close a cover after wiring, be sure to
turn the Locking Screw to the left and lock.
(*) Flameproof(TIIS,ATEX,IECEx), Intrinsically
safe(SAA)
(3) It recommends using an fl exible metal conduit
and a duct for waterproofi ng or external
protection of an electric wire. Refer to Figure
4.9 and Figure 4.10.
(4) The fl ameproof packing adapter (option
code: /G11 or /G12) should be used for the
external wiring of TIIS Flameproof. Refer
to “INSTALLATION AND OPERATING
PRECAUTIONS FOR TIIS FLAMEPROOF
EQUIPMENT.”
Terminal Box
Steel Conduit
Flameproof
Converter
F0411.ai
Drain Fitting
Tee
Flexible Metal Conduit
Figure 4.9 Example of Wiring (Integral Type and
Remote Type Detector)
F0412.ai
Terminal Box
Steel Conduit for
Flameproof
Converter
Tee
Drain Fitting
Flexible Metal Conduit
Figure 4.10 Example of Wiring (Remote Type
Converter)
Adapter Body
Packing
Washer
Packing Case
Packing Gland
Clamp Ring
Clamp Nut
B. Coupling
Union Nut
Wrench
O-Ring
Lock Nut
Wrench
Lock Nut
Cable
Apply a nonhardnening
sealant to the threads
for watweproofing
F0413.ai
Figure 4.11 Cable Wiring
NOTE
Be sure to use the fl ameproof packing adapter
(option code:/G11 or /G12) for TIIS fl ameproof
type at the time of cable wiring work. Refer to
Table 4.2.
Table 4.2 Flameproof packing adaptor
Option Code
Diameter for
screw
Cable outer
diameter
mm (inch)
Identifi cation
mark
Parts NO.
G11
G12
G11
G12
ø8.0 to ш10.0
(ш0.31 to ш0.39)
ш10.0 to ш12.0
(ш0.39 to ø0.47)
16 8-10
16 10-12
G9601AM