169 
 
8.4 Auto-Tuning Fault Detection (Under Development) 
Table 8.4 Auto-Tuning Codes, Causes, and Possible Solution 
User presses STOP key 
during Auto-Tuning 
Do not press STOP key during 
Auto-Tuning 
Line-to Line 
Resistance Error 
The line-to-line resistance in 
Auto-Tuning is negative or 
limited by the upper the 
lower limit 
Check and correct motor wiring 
Stationary 
Auto-Tuning Error 
The voltage or current is too 
large during stationary 
Auto-Tuning 
Make sure the data entered in t1-03 
to t1-05 is the same as the 
information showed on the motor 
nameplate 
Check and correct motor wiring 
Rotational 
Auto-Tuning Error 
The voltage or current is too 
large during rotational 
Auto-Tuning 
Make sure the data entered in t1-03 
to t1-05 is the same as the 
information showed on the motor 
nameplate 
Check and correct motor wiring 
Perform Auto-Tuning after 
disconnect the motor from the 
machinery   
t5-05 and t1-07 setting 
incorrect 
Make sure the data entered to t1-05 
and t1-07 is the same as the 
information showed on the motor 
nameplate.   
Reset the parameters.