18
(12)The operator must check for the safety of the surrounding before
turning on or off the power. Prevent operation by any person who
is not concerned.
(13) If the supply voltage drops when the power supply is interrupted
instantaneously, the inverter will detect the undervoltage and
shut off the output. When the supply voltage is restored, the
inverter automatically resumes operation. Check the system
consistency.
(14)The heat sink on the side of the inverter becomes hot. Never
touch it during operation or before a sufficient time passes after
the inverter is stopped.
(15)Every possible effort has been made to ensure the quality of the
product. However, unexpected external noise and static electric-
ity, as well as incorrect terminal wiring, may cause operation
beyond the setting. Pay special attention to your machines and
their safety.
8-2 Operational precautions
(1) The voltage source capacity shall be within the range from 1.5
times the inverter capacity to 500 kVA. When the voltage source
capacity exceeds 500 kVA or a phase advance capacitor is
switched on the power supply side, an excessive peak current
may flow through the power input circuit, braking the converter
section. In that case, install a power factor improved AC reactor,
which matches the inverter capacity, on the input side of each
inverter.
(2) Wiring or operation sequence that permits application of input
voltage to the output side of the inverter will cause inverter break-
down. Avoid it.
(3) The life of inverter is greatly influenced by the ambient tem-
perature. Lower the ambient temperature as much as possible
within the allowable range.
(4) Do not install an electromagnetic contactor between the inverter
and motor to run and stop the motor by the electromagnetic
contactor. Run and stop the motor by the operation switch on the
front panel or by the external control terminal "RUN."
(5) Do not connect a phase advance capacitor to the output side of
the inverter, otherwise the phase advance capacitor may be bro-
ken.
(6) Do not conduct overload operation in excess of the inverter ca-
pacity (example: operation in excess of the rated current of the
inverter), otherwise the inverter may be broken or the service life
of the inverter may be shortened.
(7) When operating a motor by the inverter, the leakage current may
increase and the earth leakage breaker may malfunction. In
CAUTION
!
Summary of Contents for CAI40C
Page 23: ...Printed 2009 12 EM0102E 1 5...
