| 1 |
OC-2 |
Over-current at speeddown |
2)Time of speedup too short 3)Capacities of Converter too small4)Short circuit on output side |
2)Reset the speedup time3)Replace with a lager-capacity Converter 4)Examine the insulation soundness of wiring 5)Examine whether the motor is locked |
| 2 |
OU-3 |
Over-current at constant speed |
| 3 |
OU-1 |
Over-voltage at speedup |
1)Abnormal voltageof power supply 2)Speeddown time too short 3)Improper braking units used4)inertia moment of load too large |
1)Examine input voltage2)Reset speeddown timeinertia moment |
| 4 |
OU-2 |
Over-voltage at speeddown |
| 5 |
OC-3 |
Over-voltage at constant speed |
| 6 |
LU |
Under-voltage |
1) Abnormal inputvoltage2) Internal faults ofConverter |
1) check powersupply2) contact themanufacturer |
| 7 |
OL |
Overload |
1) Load too large2) Motor rotationblocked3)Improper settingof thermalprotection parameters |
1) Reduce the load2)Eliminate the lock3)Reset the thermalprotectionparameters |
| 8 |
OH |
Over heating |
1) surroundingtemperature istoo high;2). Cooling fanbreaks. |
cooling fan |
| 9 |
DL |
Short circuit of output |
1) short circuit ofgrounding2) internalmalfunction ofinverter |
1) Remove the shortcircuit2) contact themanufacturer |
| 10 |
CPU |
System abnormality |
1) interfered byexternal factors2) internal malfunction of inverter |
1) eliminateinterference2) contact themanufacturer |
