Allen-Bradley · PowerFlex 750
The drive has detected an incompatible power supply for the drive AC input rating on port 2. This can lead to improper operation or damage if not addressed.
Click steps to track your progress.
1. Measure the line-to-line voltage (VAC) and frequency (Hz) of the power supply connected to drive input terminals R2/L1, S2/L2, T2/L3 using a calibrated multimeter.
2. Refer to the drive's nameplate and technical specifications to confirm the correct input voltage and frequency requirements for Port 2.
3. Verify that the incoming power supply's phase configuration (e.g., 3-phase Delta, 3-phase Wye) is consistent with the drive's Port 2 specifications.
4. Inspect all power connections at Port 2 for secure termination and correct wiring scheme, paying attention to R2, S2, T2 terminals.
5. If an input reactor or filter is installed on Port 2, verify its rating matches the drive and that it is correctly installed according to the manufacturer's guidelines.