Troubleshooting

Troubleshooting Guide

This guide provides common problems and solutions that you may encounter during the use of our product. If you encounter problems during use, please first refer to this guide for troubleshooting.

Troubleshooting Process

When equipment malfunctions, please follow these steps for troubleshooting:

1. Record the fault symptoms - Record in detail the abnormal performance and fault codes of the equipment
2. Check basic conditions - Power supply, wiring, environmental conditions, etc.
3. Refer to fault code table - Find the corresponding problem according to the fault code on the display
4. Try basic solutions - Power off and restart, parameter reset, etc.
5. Contact technical support - If the problem persists

Common Faults and Solutions

Power Supply Related Faults

Fault Symptom: Power indicator does not light up

Possible causes:

• External power not connected
• Power fuse blown
• Internal power module failure

Solutions:

• Check if the external power supply is working normally
• Replace the fuse (use the same specifications)
• Contact technical support to replace the power module

Fault Symptom: Power trip

Possible causes:

• Abnormal input power voltage
• Internal short circuit of the equipment
• Grid interference

Solutions:

• Measure whether the input voltage is within the allowable range
• Disconnect the load and check if it is a load problem
• Install power filters or voltage stabilizers

Control Related Faults

Fault Symptom: Unable to start or stop

Possible causes:

• Control signal not correctly input
• Incorrect control parameter settings
• Protection function triggered

Solutions:

• Check if the control signal line connection is correct
• Check control logic and parameter settings
• View fault history and eliminate protection trigger causes

Fault Symptom: Unstable control signal

Possible causes:

• Poor signal line contact
• Signal interference
• Control circuit failure

Solutions:

• Check and reconnect signal lines
• Add shielding measures and keep away from interference sources
• Check control circuit components

Motor Related Faults

Fault Symptom: Motor does not rotate

Possible causes:

• Incorrect motor wiring
• Incorrect motor parameter settings
• Motor overload
• Motor damage

Solutions:

• Check motor wiring
• Reset motor parameters
• Check if the load is too heavy
• Measure motor winding resistance

Fault Symptom: Abnormal motor operation (loud noise, vibration, etc.)

Possible causes:

• Motor not securely installed
• Worn motor bearings
• Improper output frequency setting
• Poor connection between motor and load

Solutions:

• Check and reinforce motor installation
• Replace motor bearings
• Adjust output frequency and V/F curve
• Check couplings or transmission devices

Protection Function Triggered

Overcurrent Protection

Possible causes:

• Motor overload
• Motor locked rotor
• Short circuit fault
• Incorrect motor parameter settings

Solutions:

• Check if the load is normal
• Check if the motor is stuck
• Check if the output circuit is short-circuited
• Reset motor parameters

Overheating Protection

Possible causes:

• High ambient temperature
• Poor heat dissipation
• Overload running time too long
• Cooling fan failure

Solutions:

• Improve ventilation conditions and reduce ambient temperature
• Clean heat sinks and ventilation openings
• Reduce load or increase heat dissipation measures
• Replace cooling fan

Overvoltage/Undervoltage Protection

Possible causes:

• Unstable grid voltage
• Improper handling of regenerative energy
• Voltage detection circuit failure

Solutions:

• Install voltage stabilizers or UPS
• Add braking resistors or braking units
• Check voltage detection circuit

Fault Code Table

The following are common fault codes and their meanings:

Parameter Reset

If you suspect that parameter settings are causing problems, you can try to restore parameters to factory settings:

1. In the stop state, enter the parameter setting menu
2. Find the “Restore Factory Settings” option (usually P00.12)
3. Set it to 1 and confirm
4. The device will restart and restore factory settings
5. Reset necessary parameters

Daily Maintenance Recommendations

Regular maintenance can reduce the occurrence of faults:

• Daily inspection: Operating status, abnormal noise, temperature
• Weekly inspection: Clean dust from equipment surface, check terminal blocks
• Monthly inspection: Check cooling system, confirm parameter settings
• Quarterly inspection: Comprehensive inspection, test protection functions

Contact Technical Support

If you cannot solve the problem through this guide, please prepare the following information and contact our technical support team:

• Product model and serial number
• Detailed description of fault symptoms
• Environment and conditions where the fault occurred
• Solutions already attempted
• Application scenario and load situation

Our technical support team will provide you with professional help as soon as possible.

We hope this troubleshooting guide can help you solve the problems encountered during use. If you have any suggestions or need further support, please feel free to contact us.