User's Manual AXF Magnetic Flowmeter Integral ... - Yokogawa
User's Manual AXF Magnetic Flowmeter Integral ... - Yokogawa
User's Manual AXF Magnetic Flowmeter Integral ... - Yokogawa
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4. WIRING<br />
(5) Wiring the Remote Flowtube (General-<br />
Purpose Use, Submersible Type, Size 500<br />
to 1000 mm (20 to 40 in.)) with Converters<br />
1) Connection with the <strong>AXF</strong>A11 converter<br />
Connect wiring as shown in the figure below.<br />
IMPORTANT<br />
A remote flowtube (size 1100 to 2600 mm)<br />
cannot be combined with <strong>AXF</strong>A14 converter.<br />
(7) Grounding<br />
FUSE<br />
2.5A 250V<br />
Shortbar<br />
I+ I– SO1+ SO2+ COM AL+ AL– C SA A B SB<br />
CURRENT OUT STATUS OUT ALARM OUT<br />
SIGNAL<br />
4-20mA out<br />
N/– L/+ EX1 EX2 P+ P– SI1+ SI2+ COM<br />
POWER SUPPLY EXCIT ATION PULSE OUT STATUS IN<br />
<strong>AXF</strong>A11 converter<br />
CAUTION<br />
A<br />
B<br />
C<br />
Excitation<br />
cable<br />
EX2<br />
Figure 4.2.17 Wiring Diagram<br />
IMPORTANT<br />
<strong>AXF</strong>C dedicated<br />
signal cable<br />
Converter<br />
SA<br />
A<br />
B<br />
SB<br />
C<br />
EX1<br />
EX2<br />
Remote<br />
flowtube<br />
Taping*<br />
A<br />
B<br />
Taping*<br />
C<br />
EX1<br />
EX2<br />
* Individually tape and insulate<br />
the shields corresponding to SA<br />
EX1 and SB on the remote flowtube<br />
side.<br />
Remote flowtube<br />
F040217.EPS<br />
A remote flowtube (size 500 to 1000 mm) cannot<br />
be combined with <strong>AXF</strong>A14 converter.<br />
Be sure to connect the protective grounding of<br />
the <strong>AXF</strong> remote flowtube with a cable of 2mm 2<br />
or larger cross section in order to avoid electrical<br />
shock to the operators and maintenance engineers<br />
and to prevent the influence of external<br />
noise.<br />
Connect the grounding wire to the mark.<br />
The grounding should satisfy Class D requirements<br />
(ground resistance, 100 or less).<br />
In case of TIIS Flameproof type, the grounding<br />
should satisfy Class C requirements (ground<br />
resistance, 10 or less) or class A requirements<br />
(ground resistance, 10 or less).<br />
For explosion proof type except TIIS, follow the<br />
domestic electrical requirements as regulated in<br />
each country.<br />
(6) Wiring the Remote Flowtube (General-<br />
Purpose Use, Submersible Type, Size 1100<br />
to 2600 mm (44 to 104 in.)) with Converters<br />
1) Connection with the <strong>AXF</strong>A11 converter<br />
Connect wiring as shown in the figure below.<br />
IMPORTANT<br />
Improper grounding can have an adverse affect<br />
on the flow measurement. Ensure that the<br />
instrument is properly grounded.<br />
FUSE<br />
2.5A 250V<br />
Shortbar<br />
A<br />
B<br />
C<br />
I+ I–<br />
CURRENT OUT<br />
4-20mA out<br />
N/– L/+<br />
POWER SUPPLY<br />
SO1+ SO2+ COM<br />
STATUS OUT<br />
EX1 EX2<br />
EXCIT ATION<br />
AL+ AL– C SA A B SB<br />
ALARM OUT<br />
SIGNAL<br />
P+ P– SI1+ SI2+ COM<br />
PULSE OUT STATUS IN<br />
<strong>AXF</strong>A11 converter<br />
<strong>AXF</strong>C dedicated<br />
signal cable<br />
Excitation<br />
cable<br />
Remote<br />
Converter<br />
flowtube<br />
SA Taping*<br />
A<br />
A<br />
B<br />
B<br />
SB Taping*<br />
EX2<br />
C<br />
C<br />
EX1 EX1<br />
EX2 EX2<br />
* Individually tape and insulate<br />
the shields corresponding to SA<br />
EX1 and SB on the remote flowtube<br />
side.<br />
Remote flowtube<br />
F040218.EPS<br />
Figure 4.2.18 Wiring Diagram<br />
4-14<br />
IM 01E20D01-01E
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