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4 Troubleshooting
21
4 Troubleshooting
4.1 Failure and countermeasure
Possible failure types in EDS780 are shown in Table 4-1 and failure code is from E001
to E023. Some failure code is reserved for intelligent automatic diagnosis function
which will be executed continuously in future. When failure takes place in the inverter,
the user should check according to note of this table firstly and record failure
phenomena detailedly. Please contact our after-sale service and technical support
Department or agent in your local place when technical service is needed.
Table 4-1 failure type and the countermeasure
failure
code
failure type
possible reason
countermeasure
Accelerating time is too short
Prolong accelerating time
Improper V/F curve
Adjust V/F curve setting
，
adjust manual
torque boost or change to automatic torque
boost
Restart rotating motor
Set speed checking restart function
Low power source
voltage
Check input power supply
E001 overcurrent
during
accelerating
process
Too small power of the
inverter
Choose inverter with high-power
Decelerating time is too
short
Prolong decelerating time
Have potential energy
load or big inertia load
Increase braking power of external energy
consumption braking subassembly
E002 overcurrent
during
decelerating
process
Power of inverter is a bit
small
Choose inverter with high-power
Load change suddenly or have
unwonted phenomena
Check or reduce break of the load
Accel/Decel time is set
to too short
Prolong accelerating decelerating time
properly
low power source
voltage
Check input power supply
E003 overcurrent
during
constant speed
process
Power of inverter is a bit small
Choose inverter with high-power
Unwonted input voltage
Check input power supply
Accel time is set to too short
Prolong accelerating time
properly
E004 overvoltage
during accelerating
process
Restart rotating motor
Set speed checking restart
function
Decelerating time is too short
Prolong decelerating time
E005 overvoltage
during
decelerating
process
Have potential energy
load or big inertia load
Increase braking power of external energy
consumption braking subassembly
Unwonted input voltage
Check input power supply
Accel/Decel time is set
to too short
Prolong accelerating decelerating
time properly
E006 Overvoltage
during constant
speed process
Input voltage change
abnormally
Assemble reactor
Summary of Contents for EDS780 Series
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