Maintenance And Inspections . B38 - Panasonic MADDT1207 Technical Reference

6. Maintenance and Inspections
• Routine maintenance and inspection of the driver and motor are essential for the
proper and safe operation.
Notes on Maintenance and Inspection
1) Turn on and turn off should be done by operators or inspectors themselves.
2) Internal circuit of the driver is kept charged with high voltage for a while even after
power-off. Turn off the power and allow 15 minutes or longer after LED display of the
front panel has gone off, before performing maintenance and inspection.
3) Disconnect all of the connection to the driver when performing megger test (Insulation
resistance measurement) to the driver, otherwise it could result in breakdown of the
driver.
Inspection Items and Cycles
General and normal running condition
Ambient conditions : 30˚C (annual average), load factor of 80%
or lower, operating hours of 20 hours or less per day.
Perform the daily and periodical inspection as per the items below.
Type Cycles
Daily
Daily
inspection
Periodical
Annual
inspection
<Notes>
Inspection cycle may change when the running conditions of the above change.
Items to be inspected
• Ambient temperature, humidity, speck, dust or foreign object
• Abnormal vibration and noise
• Main circuit voltage
• Odor
• Lint or other particles at air holes
• Cleanness at front portion of the driver and connecter
• Damage of the cables
• Loose connection or misalignment between the motor and
machine or equipment
• Pinching of foreign object at the load
• Loose tightening
• Trace of overheat
• Damage of the terminals
– B38 –