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CHAPTER1 Cautions To Ensure Safety
1-3 Installation and wiring safety points
!
CAUTION
Always cut off all power to the controller and the overall system before attempting
installation or wiring jobs. This will prevent possible electrical shocks.
After the controller has been on for a while, some points in the controller may be
extremely hot or remain at high voltages. After cutting off the power when install-
ing or removing the unit, wait at least 5 minutes before starting work.
!
CAUTION
Always uses the system specifications as listed in the controller instruction manual
during installation or wiring work on the controller. Attempting to use other than
these system specifications might cause electrical shocks, fire, faulty operation,
product damage or deteriorated performance.
!
CAUTION
Securely install the connectors into the unit, and when wiring the connectors, make
the crimp, contact or solder connections correctly, using the tool specified by the
manufacturer. Poor connections will cause faulty operation.
!
CAUTION
When installing the unit, be careful not to directly touch any electronic compo-
nents (except DIP switches) or parts conducting electrical current.
!
CAUTION
Make sure that foreign matter such as wiring debris or dust does not penetrate
into the controller.
!
CAUTION
Always store network cable inside cable ducts or clamp them securely in place.
Otherwise, excessive play or movement, or mistakenly pulling on the cable may
damage the unit or cables, or poor cable contact may lead to faulty operation.
!
CAUTION
When detaching the cable, remove by holding the connector itself and not by tug-
ging on the cable. Otherwise, removing by pulling on the cable itself may damage
the unit or cables, or poor cable contact may lead to faulty operation.