Johnson Controls Penn VFD68BBB, Technical Bulletin

Page: 71 / 108

VFD68 Variable Frequency Drives
71
Advanced Troubleshooting
Use the following tables to resolve problems with the VFD68 drive.
Table 69: Symptoms and Resolutions
Symptom Resolution Table
Motor Does Not Start Table 70 on page 72
Motor or Machine Makes Generates Acoustic Noise Table 71 on page 73
VFD Generates Abnormal Acoustic Noise Table 72 on page 73
Motor Generates Heat Abnormally Table 73 on page 73
Motor Rotates in the Opposite Direction Table 74 on page 73
Speed Greatly Differs from the Setting Table 75 on page 74
Acceleration/Deceleration Is Not Smooth Table 76 on page 74
Speed Varies During Operation Table 77 on page 74
Operation Mode Cannot Be Changed Table 78 on page 74
Operation Panel Display Does Not Operate Table 79 on page 74
Motor Current is Too Large Table 80 on page 75
Unable to Write Parameter Setting Table 81 on page 75