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9
9.1 ROUTINE INSPECTION
9. ROUTINE INSPECTION AND MAINTENANCE
Safety Information
DANGER
• Do not connect or disconnect wiring
while the power is on.
• Before the inspection, disconnect all
power supplies. After disconnecting
power to the drive, there is residual
voltage in the DC capacitor in the drive,
wait for several minutes until the the
power indicator is off. Before powering
on the drive again for operation, wait
for an interval specified by the drive.
• Do not modify or disconnect wiring,
remove optional extension card or
replace the cooling fan while the
power is on.
• Make sure to connect the motor-side
grounding terminal. Failure to comply
may result in electric shock when
touching motor housing.
• Do not allow unqualified personnel to
perform repair and maintenance work.
• Installation, wiring, commissioning,
repair and maintenance, and
component replacement must be
performed only by qualified technicians
WARNING
• Do not run the AC drive with its front
cover removed.
• Drawings in the manual are sometimes
shown without covers or protective
guards to display details. Remember
to install the covers or protective
guards as specified first, and then
perform operations in accordance
with instructions.
• Tighten all terminal screws based
on specified tightening torque.
• Ensure that input voltage is within
permissible range. Incorrect input
voltage of main circuit may result in
abnormal operation.
• Keep combustible materials far away
from the AC drive or mount the AC
drive on incombustible surfaces such
as a metal wall.
CAUTION
• Replace the cooling fan using correct
methods as specified in this chapter.
Ensure correct air outlet direction of the
fan. Incorrect air direction will diminish
the cooling effects.
• Do not connect or disconnect the motor
while the drive is running. Failure to
comply may result in electric shock
and damage to the AC drive.
• Use shielded cables for control
circuit wiring.
• Ground the shield to the grounding
terminal reliably.
• Do not modify the drive circuitry.
Failure to comply will damage the
AC drive.
• Make sure to connect the output
terminals of the AC drive and the
motor terminals correctly.
• If it is necessary to change the motor
rotation direction, exchange any two
of the UVW cables of the AC drive.
• Do not operate an AC drive that has
been damaged. This is to prevent
further damage to external equipment.
