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Load and Control
Motor power and the number of poles
Motor rated current
Normal operating frequency range
Type of load
Speed ??mode
Keyboard Control Terminal governor PID Governor Upper motor speed
Control mode
No PG V / F control With PG V / F control Vector control with PG
Failure phenomenon
Time to failure
The type of fault
Over-current OC
OC-P OC-C OC-FA OC-2
Abnormal voltage
OU（Overvoltage） LU（Undervoltage） OL（Overload） UL(Light load)
Other display fault
OH（Overheat） E-FL(External fault) PH-O(Phase protection) PID PG（PG error） DATE（Over the period of use） EEPR(EEPROM Error)
Plate failure
Power no display Power-smoke Power supply board relay does not pull
Keyboard failure
Key failure Parameters can not be modified Display the missing pen Knob failure
Device failure
Bombing Fan does not turn Main circuit relay or AC contactor does not pull the Power resistors burn
Output is abnormal
No output voltage Output voltage imbalance Motor vibrations Motor output is not enough
If the fault is not in the ranks, described below:
A description of the problem:
