Yokogawa Touch Screen GP20 - Manual (Page 4)

2
IM 04L51B01-02EN
■ Precautions Related to the Protection, Safety,
and Alteration of the Product
The following safety symbols are used on the product
and in this manual.
“Handle with care.” To avoid injury and damage to the instrument,
the operator must refer to the explanation in the manual.
Protective ground terminal
Functional ground terminal
(do not use this terminal as a protective ground terminal.)
Alternating current
Direct current
ON (power)
OFF (power)
• For the protection and safe use of the product and the
system in which this product is incorporated, be sure
to follow the instructions and precautions on safety
that are stated in this manual whenever you handle the
product.
Take special note that if you handle the product in a
manner that violates these instructions, the protection
functionality of the product may be damaged or
impaired. In such cases, Yokogawa does not guarantee
the quality, performance, function, and safety of
product.
• When installing protection and/or safety circuits such
as lightning protection devices and equipment for the
product and control system or designing or installing
separate protection and/or safety circuits for fool-proof
design and fail-safe design of the processes and lines
that use the product and the control system, the user
should implement these using additional devices and
equipment.
• If you are replacing parts or consumable items of
the product, make sure to use parts specified by
Yokogawa.
• This product is not designed or manufactured to
be used in critical applications that directly affect
or threaten human lives. Such applications include
nuclear power equipment, devices using radioactivity,
railway facilities, aviation equipment, air navigation
facilities, aviation facilities, and medical equipment. If
so used, it is the user’s responsibility to include in the
system additional equipment and devices that ensure
personnel safety.
• Do not modify this product.
• Use the Correct Power Supply
Ensure that the source voltage match-
es the voltage of the power supply
before turning ON the power. In the
case of a portable type, ensure that
it is within the maximum rated volt-
age range of the provided power cord
before connecting the power cord.
● Use the Correct Power Cord and Plug
(Portable Type)
To prevent electric shock or fire, be
sure to use the power cord supplied
by Yokogawa. The main power plug
must be plugged into an outlet with a
protective earth terminal. Do not dis-
able this protection by using an ex-
tension cord without protective earth
grounding.
The power cord is designed for use
with this instrument. Do not use the
power cord with other instruments.
● Connect the Protective Grounding
Terminal
Make sure to connect the protective
grounding to prevent electric shock
before turning ON the power.
The power cord that comes with the
portable type is a three prong type
power cord. Connect the power cord
to a properly grounded three-prong
outlet.
● Do Not Impair the Protective Ground-
ing
Never cut off the internal or external
protective grounding wire or dis-
connect the wiring of the protective
grounding terminal. Doing so invali-
dates the protective functions of the
instrument and poses a potential
shock hazard.
● Do Not Operate with Defective Protec-
tive Grounding
Do not operate the instrument if the
protective grounding might be defec-
tive. Also, make sure to check them
before operation.
● Do Not Operate in an Explosive Atmo-
sphere
Do not operate the instrument in the
presence of flammable gas or vapors.
Operation in such an environment
constitutes a safety hazard. Pro-
longed use in a highly dense corro-
sive gas (H
2
S, SOx, etc.) will cause a
malfunction.
● Do Not Remove Covers
The cover should be removed by
Yokogawa’s qualified personnel only.
Opening the cover is dangerous,
because some areas inside the instru-
ment have high voltages.
● Ground the Instrument before Making
External Connections
Connect the protective grounding
before connecting to the item under
measurement or control unit.
● Damage to the Protection
Operating the instrument in a man-
ner not described in this manual may
damage the instrument’s protection.
● Wiring
To prevent shock, attach the included
terminal cover after wiring. Make sure
to use appropriate wires and crimp-on
lugs.