Specifications

Chapter8TroubleshootingVFD‐G7SeriesFrequencyInverterOperationManual
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168
Fault
code
Fault
categories
Possible reasons of fault Actions
E008
Over-voltage
during
deceleration
Too short Dec time Prolong the Dec time
Too big load inertia Use big dynamic braking kit
Abnormal input voltage Check the AC supply voltage
E009
Over-voltage
in constant
speed
operation
Abnormal change of input
voltage
Install input reactor
Too big load inertia Use suitable dynamic braking kit
E010
DC Bus
under-voltage
Low AC supply voltage Check the AC supply voltage
E011
Motor
over-load
Low AC supply voltage Check the AC supply voltage
Improper motor’s rated
current
Modify motor’s rated current
Load in creases suddenly
Check the load, adjust the value
of torque boost
The drive's and motor's
powers don't match
Use suitable motor
E012
Drive
over-load
Too short Acc time Prolong the Acc time
The rotating motor re-start
Avoid re-start after the drive
stops instantly
Low AC supply voltage Check the AC supply voltage
Too heavy load Select a high power drive
E013
Input phase
loss
Any of phase R, S and T
cannot be detected
Check the input power supply
Check the drive’s output wiring
E014
Output phase
failure
U, V, W output loss (or the
3-phase loads are serious
asymmetry)
Check the drive’s output wiring
Check the cable and the motor
E015
Rectifier’s
heatsink
overheat
Instantaneous over-current Refer to E004~E006
Short-circuit among
3-phase output or
line-to-ground short
circuit
Rewiring