YOKOGAWA ISC450G User Manual

7
IM 12D06D05-01E
3 INSTALLATIONANDWIRING
3-2. Wiring
3-2-1. Preparation
Refertofigure3-4.Therelaycontactterminals
and power supply connections are under the
screening (shielding) plate. These should be
connected first. Connect the sensor, outputs
and HART
®
communication connections last.
ToopentheEXAxt450forwiring:
1.Loosenthefourfrontplatescrewsandswing
open the cover.
2. The upper terminal strip is now visible.
3. Remove the screen (shield) plate covering
the lower terminal strip.
4.Connectthepowersupplyandcontact
outputs.Usethethreeglandsatthebackfor
these cables.
• Cablesthatwithstandtemperaturesofat
least70°Cshouldbeusedforwiring.
• Wiringworkshouldbeperformedtomeet
IP66 or higher requirements. Tighten four
frontplate screws to 1.5 N·m torque.
Always place the screen plate over the power
supply and contact terminals for safety reasons
and to avoid interference.
5. Put back (replace) the screen (shield) plate
over the lower terminals.
6. Connect the analog output(s), the sensor
inputs, and, if necessary, the HART
®
wiring
and input contact.
7.Usethefrontthreeglandsforanalogoutput,
sensor inputs, contact input and HART
®
wiring (see figure 3-5).
8.Swingbackthecoverandsecureitwiththe
four screws.
9.Switchonthepower.Commissionthe
instrument as required or use the default
settings.
Do not turn on power with the touchcsreen
pressed, otherwise inaccurate screen
positioning will occur. If it occurs, leave the
touchscreen unpressed, turn off power then
on again. The screen positioning will be
accurate.
DANGER
Figure 3-4. Internal view of EXAxt wiring compartment
6 X M20 glands
potentio-
merter
LCD
bracket
connector for (future) software
input
terminal
block
output
terminal
block
protective
shield
bracket
Note: ISC450G-A(D)-U
The enclosure is provided with stoppers in stead of M20 cable glands for the unused holes.
ThesestoppersmustberemovedandreplacedbyFMapprovedconduitfittingsinaccord-
ancewithgoodinstallationpractice.SeeAPPENDIX6,ControldrawingforFMapproval.
WARNING
CAUTION
WARNING
This connector for software must be used only by
Yokogawa’s service personnel.

YOKOGAWA ISC450G Specifications

General

Brand	YOKOGAWA
Model	ISC450G
Category	Media Converter
Language	English