The inverter stops output when DC link bus voltage drops below undervoltage level The manual's first action is: “Stops the inverter output when the DC link bus voltage drops below the undervoltage level (200 VDC for 3-phase 200V, 400 VDC for 3-phase 400 V series). However, if data "3", "4", or "5" is selected for F14, no alarm is output even if the DC link bus voltage drops.”
- Model
- Fuji Electric FRENIC-Eco
- Display shows
- Undervoltage protection (LU)
- Type
- Alarm code
- Source
- Manual p. 205
What LU means
Undervoltage protection p. 205
What to do
- Stops the inverter output when the DC link bus voltage drops below the undervoltage level (200 VDC for 3-phase 200V, 400 VDC for 3-phase 400 V series). However, if data "3", "4", or "5" is selected for F14, no alarm is output even if the DC link bus voltage drops. p. 205
If LU is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Fuji Electric service.
This page summarises what the manufacturer’s manual says about LU; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Fuji Electric. Found a mistake? Report an error.