Wiring Installation - YOKOGAWA EJX110A Installation Manual

• Simultaneous Analog-Pulse Output
Hazardous Location
Transmitter terminal box
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.
Hazardous Location
Transmitter terminal box
Figure 5.13 Connection between Transmitter,
Distributor and Receiver
Nonhazardous Location
I/O module
Safety barrier
(Isolated type)
Power
supply
Analog input
Power
supply
Pulse input
Safety barrier
(Isolated type)
Nonhazardous Location
Distributor
(Power supply unit)
Receiver
instrument
F0529.ai
• Four wire connection
Fasten the negative side wiring of both power supply
and signal line to the SUPPLY - terminal.
Hazardous Location
Transmitter terminal box
F0510.ai
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.
Flexible metal conduit
Wiring metal
conduit
Tee
Drain plug
Figure 5.15 Typical Wiring Using Flexible Metal
Conduit
<5. Wiring>
Nonhazardous Location
Distributor
(Power supply unit)
Receiver
instrument
F0530.ai
Apply a non-hardening
sealant to the threads for
waterproofing.
IM 01C25A01-01E
44
F0511.ai