<Preface>
v
IM 34M6H28-01E
1st Edition : Feb.01,1999-00
■
General Requirements for Using FA-M3 Controllers
●
Avoid installing FA-M3 controllers in the following locations:
•
Where the instrument will be exposed to direct sunlight, or where the operating tem-
perature is outside the range 0
8
to 55
8
C.
•
Where the relative humidity is outside the range 10 to 90%, or where sudden tempera-
ture changes may occur and cause condensation.
•
Where corrosive or inflammable gases are present.
•
Where the instrument will be exposed to direct mechanical vibration or shock.
●
Securely tighten screws:
•
Securely tighten module mounting screws and terminal screws to avoid problems
such as faulty operation.
●
Securely fasten connectors of interconnecting cables:
•
Securely fasten connectors of interconnecting cables, and check them thoroughly
before turning on the power.
●
Interlock with emergency-stop circuitry using external relays:
•
Equipment incorporating the FA-M3 controllers must be furnished with emergency-
stop circuitry that uses external relays. This circuitry should be set up to interlock
correctly with controller status (stop/run).
●
Ground FA-M3 controllers to an independent Japanese Industrial Standard
(JIS) Class 3 Ground:
•
Avoid grounding the FG terminal of the FA-M3 controller to the same ground as high-
voltage power lines. Ground the terminal to an independent JIS Class 3 ground
(ground resistance up to 100
Ω
).
●
Observe countermeasures against noise:
•
When assigning inputs/outputs, the user should avoid locating AC-supplied I/O mod-
ules in the vicinity of the CPU module.
●
Keep spare parts on hand:
•
Stock up on maintenance parts, including spare modules, in advance.
●
Discharge static electricity before operating the system:
•
Because static charge can accumulate in dry conditions, first touch grounded metal to
discharge any static electricity before touching the system.
●
Never use solvents such as paint thinner for cleaning:
•
Gently clean the surfaces of the FA-M3 controllers with a piece of soft cloth soaked in
water or a neutral detergent.
•
Do not use solvents such as paint thinner for cleaning, as they may cause deforma-
tion, discoloration, or malfunctioning.
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