Recommended Daily Inspection; General Recommended Daily Inspection Checklist - YASKAWA V1000 Series Installation & Start-Up Manual

6.2 Inspection
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Recommended Daily Inspection

Table 6.1 outlines the recommended daily inspection for Yaskawa drives. Check the
following items on a daily basis to avoid premature deterioration in performance or product
failure. Copy this checklist and mark the "Checked" column after each 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 five minutes after all indicators are OFF and measure the DC bus voltage level to confirm safe level.
Table 6.1 General Recommended Daily Inspection Checklist
Inspection
Category
• Inspect for abnormal oscillation or noise
Motor
coming from the motor.
• Inspect for abnormal heat generated
Cooling from the drive or motor and visible
discoloration.
Cooling • Inspect drive cooling fan operation.
• Verify the drive environment complies
Environment with the specifications listed in the
Installation section of this manual.
• The drive output current should not be
Load higher than the motor or drive rating for
an extended period of time.
Power Supply • Check main power supply and control
Voltage voltages.
248
Inspection Points
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Corrective Action
• Check the load coupling
• Measure motor vibration
• Tighten all loose components
• Check for excessive load
• Loose connections
• Check for dirty heatsink or motor
• Ambient temperature
• Check for clogged or dirty fan.
• Check fan operation drive parameter.
• Eliminate the source of contaminants
or correct poor environment.
• Check for excessive load.
• Check the motor parameter settings of
the drive.
• Correct the voltage or power supply to
within nameplate specifications.
• Verify all main circuit phases.
Checked