Chapter 6 Troubleshooting - Emerson EV1000-2S0004G User Manual

All the possible faults of EV1000 have been given in Table 6-1. Fault code range is E001~E024. You can user can check the
faults according to the following table and record detailed fault phenomena before seeking service. Please contact the sales
distributor when you need technical supports.
Fault Fault
code descriptions
Over-current in Acc
E001
process
Over-current in Dec
E-002
process
Over-current in
E003 constant speed
operation
Over voltage in Acc
E004
process
Over voltage in Dec
E005
process
Over voltage in
E006 constant-speed
operating process
Over voltage of
E007 drive's control
power supply
E008 Reserved
E009 Output phase loss
E010 Reserved
Rectifier's heatsink
E011
overheat
E012 Reserved
E013 Drive overload

Chapter 6 Troubleshooting

Table 6-1 Fault Information and Diagnosis
Possible reasons
Too short Acc time
V/F curve is not suitable.
The rotating motor re-starts after the drive stops
instantly.
Low AC supply voltage
Drive power is too small
Too short Dec time
Negative-torque load or the load inertia is too high
Too low drive's power
Sudden change of load
Too short Acc/Dec time
Abnormal load
Low AC supply voltage
Too low drive's power
Abnormal AC supply voltage
Too short Acc/Dec time
The drive is re-started with a rotating motor
Too short Dec time (with reference to generated
energy)
Negative-torque load or the load inertia is too high
Abnormal AC supply voltage
Too short Acc/Dec time
Abnormal change of input voltage
Too high load inertia
Abnormal AC supply voltage
Reserved
Output phase failure among Phase U, V and W
Reserved
Ambient over-temperature
Obstruction of ventilation channel
Fan does not work
Inverter fault
Reserved
Too short Acc time
Too large DC braking energy
Improper V/F curve
The drive is re-started with a rotating motor
Low AC supply voltage
Too heavy load
EV1000 Series General Purpose Variable Speed Drive User Manual
Chapter 6 Troubleshooting
Actions
Prolong the Acc time
Check and adjust V/F curve, adjust torque boost or
set the motor parameters correctly to ensure the
normal auto torque boost works well.
Start when the motor stops
Check the drive's input AC supply
Select a higher power drive
Prolong the Dec time
Connect suitable braking device
Select the drive with larger capacity
Reduce the change of the load
Prolong Acc/Dec time
Check the load
Check the AC supply voltage
Select the drive with larger capacity
Check the AC supply voltage
Prolong the Acc time
Start when the motor stops
Prolong the Dec time
Use suitable dynamic braking device
Check the AC supply voltage
Prolong the Acc/Dec time
Install input reactor
Use suitable dynamic braking device
Check the AC supply voltage or seek service
Reserved
Check the drive's output wiring
Check the cable and the motor
Reserved
Lower the ambient temperature
Clear the ventilation channel
Replace the fan
Seek service
Reserved
Prolong Acc time
Reduce DC braking current, prolong braking time
Adjust V/F curve or torque boost value
Start when the motor stops
Check the AC supply voltage
Select the drive with larger power
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