Abnormality Diagnostic Function And Resetting Method; Safety Precautions - Panasonic VF200 Instruction Manual

9. Troubleshooting

9.1 Safety Precautions

9.2 Abnormality Diagnostic Function and
Resetting Method
9.2.1 Details and Remedies for Various Fault Trips
The fault trip memory stores the causes of trip in monitor modes n20 to n23.
Even if the power is cut off, the fourth to the latest causes of trip will still be held.
(Details of factory inspection are stored in the memory before delivery.)
Indication Details and causes of abnormality
• Instantaneous overcurrent during
SC1
acceleration or cooling fan malfunction
• Instantaneous overcurrent at constant
SC2
speed or cooling fan malfunction
• Instantaneous overcurrent during
SC3
deceleration or cooling fan malfunction
• Instantaneous overcurrent during
SC4
deceleration
• Instantaneous overcurrent at constant
SC5
speed
• Instantaneous overcurrent during
SC6
acceleration
114
Wait at least five minutes after turning off the input
power before starting maintenance and inspection work.
Failure to do so may result in an electric shock.
Maintenance, inspection and part replacement work
must be done only by qualified persons.
(Remove metal articles such as watch, bracelet(s) etc.
before operation.)
(Please use insulated tools.)
Failure to do so may result in an electric shock or injury.
Remedies
• Check if there is any shorted output
or ground.
• Remove sharp variations at load
side.
• Extend acceleration/deceleration
time (parameters P001, P002 and
P061 to P066).
• Check the operation of cooling fan.
• Stop open and close operation of
magnetic contactor at load side.