YOKOGAWA EJX Series, Руководство пользователя

Страница: 34 / 52

<5. Wiring>
32
IM 01C25A01-01E
• Components for the cable gland
The cable gland assembly consists of an entry, seal,
running coupler, and backnut. Confirm that the seal is
attached inside the entry and that the thread size of the
cable gland is the same as that for the RTD electrical
connection.
F0516.ai
1/2NPT Type
M20 Type
Gasket
Entry with Seal
Running
Coupler
Backnut
Entry with Seal
Running
Coupler
Backnut
CAUTION
Input/output signal is non-isolated.
Do not turn on power supply until you complete all the
wiring work.
Procedure
(1) Disassemble the cable gland: loosen the running
coupler to separate the backnut from the entry.
(2) Remove the protection cap over the transmitter
electrical connection and install the entry on the
electrical connection. Note that a non-hardening
sealant should be applied to the threads for a 1/2 NPT
connection and a gasket should be used for an M20
connection.
Y L P
P U
S
E S L
U P
K
C E H
C
M R A L
A
F0517.ai
(3) Pass the RTD cable through the running coupler and
backnut assembly.
F0518.ai
(4) Insert the RTD cable and firmly plug its connector into
the connecting port in the transmitter's terminal box.
Y L P
P U S
E S L
U P
K C E
H C M
R
A L A
F0519.ai
(5) Align the running coupler on the entry.
Y L
P P U
S
E S L
U P
K C E H
C M
R A
L A
F0520.ai
(6) Turn the running coupler until the seal in the entry
comes into contact with the RTD cable.
Y L P
P U S
E S L
U P
K C
E H C M
R
A L A
F0521.ai
(7) Rotate the running coupler another half turn to
securely tighten the seal on the RTD cable.
(8) Use a protection conduit, if necessary.
In this case, insert the cable through the conduit and
attach it to the Backnut.
CAUTION
After the cable is secured as explained above, do not
tighten the running coupler any further; to do so could
damage the RTD connection.
Do not pull the cable or subject it to excessive
mechanical shock.