LS LSLV-iV5 Series, Руководство пользователя

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9. Inspection and Replacement
9-1
Chapter 9 – Inspection and Replacement
LS Vector Inverter, STARVERT-iV5, is an industrial electronic product that adopts up-to-date
semiconductor device. It may have a failure caused by the ambient environment such as
temperature, humidity, vibration, etc. or an excessive use of the component over its duration. It
requires a routine checking to prevent such failure in advance.
9.1 Precautions
CAUTION

Before starting the maintenance work, the operator must check out the power
input of the inverter.

Large-capacity electrolytic condenser in the power electronic circuit remains
charged with power even after the power is off. So be sure to start the
maintenance work after you acknowledged the power has been completely
discharged using a proper tester.

Be sure to use a rectifier type volt meter to obtain an accurate voltage when
directly measuring the output voltage of inverter. General volt meter or digital
volt meter may result in spurious operation or indicate wrong value due to high
frequency PWM output voltage of the inverter.
9.2 Checking Points
Electronic product is not intended for a permanent use. When it exceeds the duration even
under the normal service environment, the product may have trouble in its operation due to
change in the nature of the parts. To prevent such circumstance, it requires a routine and
regular checking.
Especially if you use it under the following environment, have it checked with a shorter interval
than the regular checking.

When the temperature is relatively high in the installed place

When the product is operated with a frequent start and stop

When the input AC power and load vary seriously

When it has severe vibration or shock

When there is corrosive gas, combustible gas, oil sludge, dust, salts, metal powder, etc