<5. Wiring>
44
IM 01C25A01-01E
• Simultaneous Analog-Pulse Output
Hazardous Location
Nonhazardous Location
Transmitter terminal box
Safety barrier
(Isolated type)
I/O module
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Safety barrier
(Isolated type)
Power
supply
Power
supply
Analog input
Pulse input
Figure 5.12 Connection between Transmitter,
barrier and receiver
(4) 1 to 5 V output
Either three or four wire system can be used.
Power supply line and 1 to 5 V signal line commonly use
the SUPPLY - terminal.
NOTE
With three wire connection, the cable length may
affect the measurement accuracy of the output signal.
In either three-wire or four-wire connection,
recommended wiring distance is 200 m or less, and
the use of shielded cable is recommended.
• Three wire connection
A negative wiring shall be commonly used for power
supply and signal line.
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Hazardous Location
Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)
Receiver
instrument
Figure 5.13 Connection between Transmitter,
Distributor and Receiver
• Four wire connection
Fasten the negative side wiring of both power supply
and signal line to the SUPPLY - terminal.
Hazardous Location
Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)
Receiver
instrument
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Figure 5.14 Connection between Transmitter,
Distributor and Receiver
5.3.2 Wiring Installation
(1) General-use Type and Intrinsically Safe
Type
With the cable wiring, use a metallic conduit or waterproof
glands.
• Apply a non-hardening sealant to the terminal box
connection port and to the threads on the flexible
metal conduit for waterproofing.
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Flexible metal conduit
Wiring metal
conduit
Tee
Drain plug
Apply a non-hardening
sealant to the threads for
waterproofing.
Figure 5.15 Typical Wiring Using Flexible Metal
Conduit
