129Chapter 7 Fault checking and solution7.1 Fault alarm and countermeasuresG10 inverter has a total of 30 warning informations and protection functions. In case ofabnormal fault, the protection function will be invoked,the inverter will stop output, and thefaulty relay contact of the inverter will start, and the fault code will be displayed on thedisplay panel of the inverter. Before consulting the service department, the user canperform self-check according to the prompts of this chapter, analyze the fault reason andfind out t solution. If you can't solve the fault, please consult the agents of inverter or ourcompany directly.During the inverter using process, the following faults may occur. Please conduct simplefault analysis by referring to the methods below:Faultcode Fault type Possible Cause Solution0 No faultOut1 IGBT Phase-Ufault1. Acc/Dec time is tooshort.2. IGBT module fault.3. Fault caused byinterference.4. Grounding is notproperly.1. Increase Acc/Dec time.2. Ask for support.3. Inspect external equipmentand eliminate interference.Out 2 IGBT Phase-VfaultOut 3 IGBT Phase-WfaultOC1Over-currentwhenacceleration1.Acc time is too Short.2.Motor parameters arenot accurate.3.The voltage of the gridis too low.4.The power of the inverter1.Prolong Acc time.2.The motor parameters self-adjusting3.Check input power.4.Select inverter with right