Free tools, fault code guides, and calculators — built for plant engineers and technicians. Register once, access everything.
Calculate exactly how much your plant saves by installing a VFD. Enter motor data and get a detailed PDF report.
Select your VFD brand and fault code to get step-by-step diagnosis and resolution guide.
Select a brand and enter a fault code to see the troubleshooting guide.
Written from real field experience — specific faults, step-by-step resolution, real plant examples.
Motor check, cable insulation, parameter verification, IGBT test sequence. Covers VLT2800, VLT5000, FC302.
Insulation resistance testing, cable screening check, motor winding measurement sequence.
Supply issue vs drive issue differentiation. DC Bus monitoring parameter settings explained.
Keypad-only procedure for 1100/1400. Fault code chart and when NOT to reset without diagnosis.
Complete OPE01–OPE11 fault code table with causes and corrective parameter values.
Acceleration ramp, load check, and motor parameter auto-tune procedure for OCA faults.