dolycon CT120G MINI Series, User Manual

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CT120G Mini Series Inverter Appendix2 Troubleshooting List
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Appendix2 Troubleshooting List
Appendix table 2 Troubleshooting list
Code Type Reason Solution
E.oC1
ACC running
overcurrent
1. The acceleration is too
fast
2. The grid voltage is too
low
3. The inverter power is
too small
1. Increase the ACC time
2. Check the input power
3. Select the inverter of
larger power
E.oC2
DEC running
overcurrent
1. The deceleration is too
fast
2. Load inertia torque is
too large
3. The inverter power is
too small
1. Increase the DEC time
2. Add the appropriate
energy consumption
braking components
3. Select the inverter of
larger power
E.oC3
Constant
speed
running
overcurrent
1. Load sudden change
or abnormal
2. The grid voltage is too
low
3. The inverter power is
too small
1. Check load or decrease
load sudden change
2. Check the input power
3. Select the inverter of
larger power
E.oU1
ACC running
overvoltage
1. The input voltage is
abnormal
2. After instantaneous
power failure, restart
the rotating motor
1. Check the input power
2. Avoid restart at stop
E.oU2
DEC running
overvoltage
1. The deceleration is too
fast
2. The load inertia is too
large
3. The input voltage is
abnormal
1. Increase the DEC time
2. Add the appropriate
energy consumption
braking components
3. Check the input power
E.oU3 Constant
speed
1. The input voltage has
changed abnormally
1. Install the input reactor
2. Add the appropriate