Line frequency fault
Indramat · CLM01.3-M Flying Cutoff Control
Hva betyr F385 ?
With HVR power supply units only! The mains frequency exceeds the permissible tolerance of ± 2Hz, indicating a deviation from the expected 50Hz or 60Hz nominal frequency.
Vanlige årsaker
- Mains frequency exceeds permissible tolerance (± 2Hz) from the nominal system frequency.
Reparasjonssteg & Sjekkliste
Klikk på steg for å spore fremgangen.
- 1
Measure the incoming line frequency at the input terminals of the Indramat HVR power supply unit (X1/L1, X1/L2, X1/L3) using a frequency meter or a multimeter with frequency measurement capability.
- 2
Verify the measured frequency is consistently within ±2Hz of the nominal system frequency (e.g., 50Hz ± 2Hz or 60Hz ± 2Hz).
- 3
Check the stability of the upstream power grid and the power source quality.
- 4
If available, review power quality logs or consult with the power utility provider regarding frequency variations or instability.