YOKOGAWA AXFA14G - Wiring the AXFA11 Remote Converter

<4. Wiring>
46
IM 01E20A01-01EN
4.4 Wiring the AXFA11 Remote
Converter
This section describes the wiring of the AXFA11 Remote
Converter side only. For information relating to wiring on
theowtubeside,refertoSection4.2ofthismanual.
WARNING
Thewiringofthemagneticowmetermustbe
performed by expert engineer or skilled personnel.
No operator shall be permitted to perform procedures
relating to wiring.
CAUTION
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.
4.4.1 Wiring Precaution for AXFA11
Be sure to observe the following precautions when wiring:
CAUTION
• In cases where the ambient temperature exceeds
50°C (122°F), use external heat-resistant wiring
with a maximum allowable temperature of 70°C
(158°F) or above.
• Do not connect cables outdoors in wet weather in
order to prevent damage from condensation and
to protect the insulation.
• Donotsplicethecablebetweentheowtube
terminal and the converter if it is too short.
Replace the short cable with a cable that is the
appropriate length.
• All the cable ends must be provided with round
crimp-on terminals and be securely wired.
• The signal cables must be routed in separate steel
conduittubes16(JISC8305)orexibleconduit
tubes15(JISC8309).
• Always route the power and output signal cables
in separate steel conduit tubes, except when the
power supply voltage is 24 V and four-core cables
areusedforwiring.Keepconduitsorexibletubes
watertight using sealing tape.
• Groundtheremoteowtubeandtheconverter
separately.
• Cover each shield of the signal cable with vinyl
tube or vinyl tape to avoid contact between two
shields or between a shield and a case.
• When waterproof glands or union equipped
waterproof glands are used, avoid tightening the
glands with an excessive torque.
• Be sure to turn power off before opening the cover.
• Before turning the power on, tighten the cover
securely.
IMPORTANT
Prepare the signal cable and the excitation cable
almost the same length. It is recommended to lay
them together closely.
4.4.2 Power Cable/Output Cable
JISC3401controlcableequivalent
JISC3312powercableequivalent
14 AWG Belden 8720 equivalent
Outer Diameter:
With no gland option:
6.5 to 12 mm (0.26 to 0.47 in.)
With gland options EG, EU and EW:
10.5 or 11.5 mm (0.41 to 0.45 in.)
With gland options EP:
6 to 12 mm (0.24 to 0.47 in.)
Nominal Cross Section:
Single wire; 0.5 to 2.5 mm
2
Stranded wire; 0.5 to 1.5 mm
2