Yokogawa ADMAG AXF - Manual (Page 47)

IM 01E20D01-01E 4-13
4. WIRING
(4) Wiring the Remote Flowtube (Explosion
Proof Type) with Converters
IMPORTANT
In case of TIIS Flameproof type, a remote
flowtube is available for combined use with
AXFA14 converter only.
1) Connection with the AXFA11 converter
In case of explosion proof type for ATEX, FM, CSA
and IECEx certification, connect wiring as shown in
the figure below.
In case of the explosion proof type, the protective
grounding
of remote flowtube must be connected to
a suitable IS grounding system. In that case,
(functional grounding terminal) need not be connected.
I+ I–
CURRENT OUT
AL+ AL– C SA A B SB
ALARM OUT
N/– L/+
POWER SUPPLY
EX2 EX1
EXCIT ATION
P– SI1+ SI2+ COM P+
PULSE OUT STATUS IN
SIGNAL
SO1+ COM SO2+
STATUS OUT
FUSE
2.5A 250V
AXFA11 converter
AXFC dedicated
signal cable
Converter
Remote
flowtube
F0428.EPS
SA
A
B
SB
C
EX1
EX2
Taping*
A
B
Taping*
C
EX1
EX2
* Individually tape and insulate the
shields corresponding to SA and
SB on the remote flowtube side.
Excitation cable
EX2
EX1
A
B
C
Remote flowtube
Figure 4.2.15 Wiring Diagram
2) Connection with the AXFA14 converter
In case of explosion proof type for ATEX, FM, CSA,
IECEx and TIIS certification, connect wiring as shown
in the figure below.
In case of the explosion proof type, the protective
grounding
of remote flowtube must be connected to
a suitable IS grounding system. In that case,
(functional grounding terminal) need not be connected.
AXFC dedicated
signal cable
Excitation cable
EX1
EX2
C
SA
A
B
SB
F0429.EPS
Converter
Remote
flowtube
SA
A
B
SB
C
EX1
EX2
Taping*
A
B
Taping*
C
EX1
EX2
* Individually tape and insulate the
shields corresponding to SA and
SB on the remote flowtube side.
AXFA14 converter
EX2
EX1
A
B
C
Remote flowtube
Figure 4.2.16 Wiring Diagram