In case of explosion proof type for CENELEC ATEX, FM, and CSA 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– | SO1+ SO2+ COM | AL+ AL– | C | SA | A | B | SB |
CURRENT OUT | STATUS OUT | ALARM OUT |
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| SIGNAL |
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| AXFA11 Converter |
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| N/– | L/+ |
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| P+ | P– | SI1+ | SI2+ | COM |
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| POWER SUPPLY |
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| PULSE OUT |
| STATUS IN |
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| AXFC Dedicated signal | ||
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| cable |
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| Excitation cable |
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| Converter | Remote | |
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| flowtube | ||
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| SA | Taping* | |
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| A | A | |
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| B | B | |
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| SB | Taping* | |
A |
| C | C | |
| EX1 | EX1 | ||
B | EX2 | EX2 | EX2 | |
* Individually tape and insulate the | ||||
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| shields corresponding to SA and | ||
| EX1 | SB on the remote flowtube side. | ||
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| C |
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| Remote flowtube |
| F0416.EPS | |
Figure 4.4.6 Wiring Diagram
(3)Connection with the Remote Flowtube
Connect wiring as shown in the figure below.
I+ | I– | SO1+ SO2+ COM | AL+ AL– | C | SA | A | B | SB |
CURRENT OUT | STATUS OUT | ALARM OUT |
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| SIGNAL |
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| AXFA11 converter | ||
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| N/– | L/+ |
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| P+ | P– | SI1+ | SI2+ | COM | |
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| POWER SUPPLY |
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| PULSE OUT |
| STATUS IN |
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Shortbar
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| AXFC dedicated | ||
| Excitation | signal cable | ||
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| Remote | ||
| cable | Converter | ||
| flowtube | |||
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| SA | Taping* | |
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| A | A | |
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| B | B | |
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| SB | Taping* | |
A | EX2 | C | C | |
EX1 | EX1 | |||
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B |
| EX2 | EX2 | |
| * Individually tape and insulate | |||
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| the shields corresponding to SA | ||
| EX1 | and SB on the remote flowtube | ||
| C | side. |
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| Remote flowtube |
| F040217.EPS | |
Figure 4.4.7 Wiring Diagram
4. WIRING
(4)Connection with the Remote Flowtube
Connect wiring as shown in the figure below.
I+ | I– | SO1+ SO2+ COM | AL+ AL– | C | SA | A | B | SB |
CURRENT OUT | STATUS OUT | ALARM OUT |
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| SIGNAL |
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| AXFA11 converter | ||
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| N/– | L/+ |
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| P+ | P– | SI1+ | SI2+ | COM | |
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| POWER SUPPLY |
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| PULSE OUT |
| STATUS IN |
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Shortbar
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| AXFC dedicated | ||
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| signal cable |
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| Excitation |
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| cable | Converter | Remote | |
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| flowtube | ||
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| SA | Taping* | |
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| A | A | |
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| B | B | |
A | EX2 | SB | Taping* | |
C | C | |||
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B |
| EX1 | EX1 | |
| EX2 | EX2 | ||
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| * Individually tape and insulate | ||
| EX1 | the shields corresponding to SA | ||
| and SB on the remote flowtube | |||
| C | side. |
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| Remote flowtube |
| F040218.EPS | |
Figure 4.4.8 Wiring Diagram
4.4.7Connecting to External Instru- ments
WARNING
Before wiring with external instrument, be sure to turn off the power supply for AXFA11 converter and any external instruments.
Connect the AXFA11 terminal to external instruments, giving attention to the following points.
4 to 20 mA DC Current Output
AXFA11
l+
Receiver
l-Instrument
Resistive Load Max. 1 kΩ .
(When using BRAIN/ HART communication, more than 250 Ω , less than 600 Ω ).
F0417.EPS
Figure 4.4.9 4 to 20 mA DC Output Connection
IM |
