Specifications

VFD‐G7 Series Frequency Inverter Operation ManualChapter 8 Troubleshooting
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Chapter 8 Troubleshooting
Table8‐1listedthepossiblefaultsofVFD‐G7,andthefaultcodeindicaterangeisfromE001
andE004~E025.Onceafaultoccurs,youmaycheckitagainstthetableandrecorddetailed
phenomenabeforeseekingservicefromyoursupplier.
8.1 Faults and actions
Table8‐1Faultsandactions
Fault
code
Fault
categories
Possible reasons of fault Actions
E001
IGBT
module’s
shorted
Too short Acc time Prolong the Acc time
Inside IGBT is damaged Seek service
Interference causes the
malfunction
Check peripheral equipment
whether has strong interference
Grounded is not good Seeking service
E004
Over-current
during
acceleration
Too short Acc time Prolong the Acc time
Low AC supply voltage Check the input power supply
Drive power is too small Select a high power drive
E005
Over-current
during
deceleration
Too short Dec time Prolong the Dec time
Low AC supply voltage Use suitable dynamic braking kit
Drive power is too small Select a high power drive
E006
Over-current in
constant speed
operation
Sudden change of load or
abnormal
Check the load or reduce the
Sudden change of load
Low AC supply voltage Check the AC input power supply
Drive power is too small Select a high power drive
E007
Over-voltage
during
acceleration
Abnormal input voltage Check the input power supply
The rotating motor
re-starts after the drive
stops instantly.
Avoid re-start after the drive
stops instantly