Inspection - YASKAWA V1000 Series Installation & Start-Up Manual

6.2

Inspection

Power electronics have limited life and may exhibit changed characteristics or performance
deterioration after years of use under normal conditions. To help avoid such problems, it is
important to perform preventive maintenance and periodic inspection on the drive.
Drives contain a variety of power electronics such as power transistors, semi-conductors,
capacitors, resistors, fans, and relays. The electronics in the drive serve a critical role in
maintaining proper motor control.
Follow the inspection lists provided in this chapter as a part of a regular maintenance
program.
Note: The drive will require more frequent inspection if it is placed in harsh environments,
such as:
-high ambient temperatures
-frequent starting and stopping
-fluctuations in the AC supply or load
-excessive vibrations or shock loading
-dust, metal dust, salt, sulfuric acid, chlorine atmospheres
-poor storage conditions.
Perform the first equipment inspection 3 months after installation.
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
6.2 Inspection
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