Service manual

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110
7 Troubleshooting
7.1 Failure and countermeasure
Possible failure types in EDS1000 are shown in Table 7-1 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 first 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 7-1 Failure type and the countermeasure
Failure
code
Failure type Possible reason Countermeasure
E001 overcurrent
during
accelerating
process
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
Too small power of the inverter Choose inverter with high-power
E002 overcurrent
during
decelerating
process
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
Power of inverter is a bit small Choose inverter with hi
g
h-
p
owe
r
E003 overcurrent
during constant
speed process
Load change suddenly o
r
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
Power of inverter is a bit small Choose inverter with high-power
E004 overvoltage
during
accelerating
process
Unwonted input voltage Check input power supply
Accel time is set to too short Prolong accelerating time properly
Restart rotating motor Set speed checking restart function
E005 overvoltage
during
decelerating
process
Decelerating time is too short Prolong decelerating time
Have potential energy load or
big
inertia load
Increase braking power of external
energy consumption braking
subassembl
y
E006 Overvoltage
during constant
speed process
Unwonted input voltage Check input power supply
Accel/Decel time is set to too
short
Prolong accelerating decelerating
time
p
ro
p
erl
y
Input voltage change abnormally Assemble reactor
Load inertia is a bit big
Use energy consumption
subassembl
y
E007 Inverter control
power supply
overvolta
g
e
Unwonted input voltage
Check input power supply or look
for service