Inspection
Category
Inspection Points Corrective Action Checked
Load
• The drive output current should not be
higher than the motor or drive rating
for
an extended period of time.
• Check for excessive load.
• Check the motor parameter settings of
the drive.
Power Supply
Voltage
• Check main power supply and control
voltages.
• Correct the voltage or power supply to
within nameplate specifications.
• Verify all main circuit phases.
u
Recommended Periodic Inspection
Table 6.2 outlines the recommended periodic inspections for Yaskawa drive installations.
Periodic inspections should generally be checked every 3-6 months; however, the drive may
require more frequent inspection due to poor environments or rigorous use. Operating and
environmental conditions, along with experience in each application, will determine the actual
inspection frequency for each installation. Periodic inspection will help to avoid premature
deterioration in performance or product failure. Copy this checklist and mark the “Checked”
column after each inspection.
n
Periodic Inspection
WARNING! Electrical Shock Hazard. Do not connect or disconnect wiring while the power is on. Failure to
comply can result in serious personal injury. Before servicing the drive, disconnect all power to the equipment.
The internal capacitor remains charged even after the power supply is turned off. The charge indicator LED
will extinguish when the DC bus voltage is below 50 Vdc. To prevent electric shock, wait at least one minute
after all indicators are OFF and measure the DC bus voltage level to confirm safe level.
6.2 Inspection
156
YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
2/6/2008-14:44
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