Mitsubishi Electric FR-F820-00077 Instruction Manual page 828

Causes and corrective actions
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
6 - 16
LDF
Load fault warning
Appears when the load is deviated from the detection width set in Pr.1488 "Upper limit warning
detection width" or Pr.1489 "Lower limit warning detection width".
Check if too much load is applied to the equipment, or if the load is too light.
Check that the load characteristics settings are correct.
Inspect the equipment.
Set the load characteristics (Pr.1481 to Pr.1487) correctly.
EHR
Ethernet communication fault (FR-F800-E only)
Appears when Ethernet communication is interrupted by physical factors while Pr. 1431
"Ethernet signal loss detection function selection" = "1 or 2".
Check that the Ethernet board is installed onto the connector securely.
Check for a break in the Ethernet cable.
Connect the Ethernet board securely.
Check that the Ethernet cable is correctly connected to the Ethernet connector. Check that
the Ethernet cable is not broken.
Protective functions
FR-LU08 LDF
FR-LU-08 EHR