YOKOGAWA EJX Series, User Manual

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<5. Wiring>
33
IM 01C25A01-01E
5.4.2 Connecting Shielded Cable for
Conduit Use (External temperature
input code: -B, -C, and -D)
• RTD connection components: EJX multivariable
transmitter and RTD cable
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Procedure
(1) Remove the protection cap protecting the RTD
electrical connection and insert the RTD cable.
SUPPL
Y
PULSE
CHECK
ALARM
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(2) Remove the cap protecting the connecting port. Then
insert the RTD cable and firmly plug the connector
into the connecting port in the transmitter's terminal
box.
(3) Insert the cable through the conduit and attach it to
the RTD electrical connection.
CAUTION
Do not pull the cable or subject it to excessive
mechanical shock.
5.4.3 Cable Connection RTD Terminal Box
Side
EJX multivariable transmitter RTD I/F is for 3-wire Type
RTD, Pt100.
Heed the following when wiring an RTD of the 2- or 4-wire
type.
NOTE
Please note that a temperature error will occur when
you use a 2-wire RTD because of wiring resistance.
Please do not ground the shield on the RTD side of
the cable.
CAUTION
Please use only the cables provided with this
instrument.
When wiring, be sure not to damage the cable's
insulation or its core.
All the cable cores must have sufficient insulation
around them.
Do not let the signal line contact the shield line.
Do not allow the shield line or the signal line to come
the earth potential voltage.
2-Wire 3-Wire 4-Wire
A
B A B b A
B b a
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Figure 5.13 The Method of Wiring for the RTD Side
Table 5.2 The Method of Wiring for the RTD Side
RTD Terminal
RTD Terminal A a B b
2-Wire White - Blue1 and Blue2 -
3-Wire White - Blue1 Blue2
4-Wire White open Blue1 Blue2
NOTE
The color display in the table shows the white line of
the cable.
The cable color could change depending on the cable
type.
Blue 1 and blue 2 allow changing places.
For 2-wire Type, connect either which is blue1 or
blue2, and give other side as OPEN.
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