Chapter 5 Methods of Anomaly Diagnosis  | VFD-VJ 
 
 
5-23
5-2-8 Hybrid servo drive overloading when running at low frequency (oL3) 
 
oL3*
Overloading at low frequency
*This fault code is only 
for version C
Replace the servo drive and the motor 
with higher capacity models.
When running at low frequency,
the hybrid servo drive goes overload.
It needs to decrease its loading.
It’s likely hybrid servo drive breaks down or 
malfunctions due to noise. 
Contact Delta for assistance. 
Problem solved