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5Application Precautions
xii
Caution Failure
to abide by the following precautions could lead to faulty operation of the
Link
Adapters or the system,
or could damage the Link Adapters or the system.
Always heed these precautions.
Observe the following precautions when using the Link Adapter system.
• Tighten
the screws on the terminal block of the AC Power Supply Unit to the
torque
specified in the operation manual. The loose screws may result in
burn
-
ing or malfunction.
• Fail-safe measures must be taken by the customer to ensure safety in the
event
of incorrect, missing, or abnormal signals caused by broken signal lines,
momentary power interruptions, or other causes.
• Always use the power supply voltages specified in this manual. An incorrect
voltage may result in malfunction or burning.
• Take
appropriate measures to ensure that the specified power with the rated
voltage
and frequency is supplied. Be particularly careful in places where the
power
supply is unstable. An incorrect power supply may result in malfunction.
• Install
external breakers and take other safety measures against short-circuit
-
ing
in external wiring. Insuf
ficient safety measures against short-circuiting may
result in burning.
• Disconnect
the functional ground terminal when
performing withstand voltage
tests.
Not disconnecting the functional ground terminal may result in burning.
• Be sure that all the mounting screws, terminal screws, and cable connector
screws
are tightened to the torque specified in the
relevant manuals. Incorrect
tightening torque may result in malfunction.
• Use
crimp terminals for wiring. Do not connect bare stranded wires directly to
terminals. Connection of bare stranded wires may result in burning.
• Double-check
all wiring and switch settings before turning ON the power sup
-
ply. Incorrect wiring may result in burning.
• Be
sure that the terminal blocks, cables, and other items with locking
devices
are properly locked into place. Improper locking may result in malfunction.
• Do
not pull on the cables or bend the cables beyond their natural limit.
Doing
either of these may break the cables.
• Do
not place objects on top of the cables or other wiring lines. Doing so may
break the cables.
• When
replacing parts, be sure to confirm that the
rating of a new part is correct.
Not doing so may result in malfunction or burning.
• Before
touching a Unit, be sure to first touch a
grounded metallic object in order
to
discharge any
static built-up. Not doing so may result in malfunction or dam
-
age.
• Install the Units properly as specified in the operation manuals. Improper
installation of the Units may result in malfunction.