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5 Troubleshooting
76VFD700 AC Drive Getting Started Guide
5.3 Other issues
When the drive operates, some other issues which are not caused by drive itself can happen,
and the drive will not display trip or alarm code. Customer can check these issues and
suggestions in following table 5-4.
Table 5-4 Other issues
Issues
Reasons
Checking And Treatments
Motor does not
start
Power issue
Check input voltage, output voltage and unbalance level
If the motor connection is correct?
If the busbar link bDC and +DC1 is fitted
correctly?
Control part
If running order is input?
If both FWD and REV are input at the same time?
If the reference is 0?
If the reference source is analogue, is there correct
analogue input signal?
If P09.21 is set correctly? (correct common point)
Parameter setup issue
If the control channel is set correctly? (P00.03)
If the reference source is set correctly?(P00.04)
If the enable (P03.19) is
"1"? And under default setup,
check the DI6 is connected to the common?
Load issue
Ifoverload occurs?
If the mechanical part is stuck?
Motor torque is not
enough
Check if the setup ofparameters in menu P06 and P07 is
correct?
Motor makes
noise
Drive output voltage
unbalance
Check the motor connection
Mechanical issue
Check the motor and related mechanical parts
Wrong setup
Check the parameter setup
Motor running
direction is
abnormal
Motor cabling issue
Check if the output U, V, W matches U, V, W of motor
Control signal issue
Check if the correct direction order is enabled