7
Installation Environment
Do not install your PLC system if any of the following
conditions are present.:
•
Ambient temperature outside the range of 0 to 55
°
C
(32 to 131
°
F).
•
Direct sunlight.
•
Humidity outside the range of 30% to 85% (non-
condensing)
•
Chemicals that may affect electronic parts.
•
Excessive or conductive dust, or salinity.
•
High voltage, strong magnetic fields, or strong
electromagnetic influences.
•
Direct impact and excessive vibration.
Electrostatic Discharges
Under dry condition, excessive electrostatic discharges
may occur. Make sure to remove electrostatic discharges
by touching a grounded metal piece before touching your
controller system modules.
Cleaning
Never use chemicals such as thinner because they melt,
deform or discolor PCB boards.
Precautions for use of power
•
Run your PLC system only after the I/O devices and
motor devices have started. (For example, first power
on in the PROG mode, then change the operation mode
to RUN.)
•
Make sure to power off I/O devices after ensuring PLC
operation is stopped.
If you power on/off I/O devices when the PLC system is in
operation, the system may malfunction because input
signal noises may be recognized as normal inputs.
Before powering on
•
Make sure to follow these directions before powering
on your PLC system.
•
When installing the system, ensure that there are no
metal chips or conductive fragments that stick to wiring
cables.
•
Ensure that power supply and I/O wirings and power
supply voltage are all correct.
•
Securely fasten installation and terminal screws.
•
Set the operation mode switch to PROG mode.
ATTENTION
ATTENTION
ATTENTION
ATTENTION
ATTENTION
