Mitsubishi Electric FR-F800 Series Instruction Manual page 600

Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
 Alarm
Output is not shut off when a protective function is activated. The Alarm (LF) signal can be output depending on the parameter
setting. (Set "98" in Pr.190 to Pr.196 (Output terminal function selection). Refer to
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
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CF
Continuous operation during communication fault
Appears when the operation continues while an error is occurring in the communication line or communication
option (when Pr.502 = "4").
• Check for a break in the communication cable.
• Check for communication option faults.
• Check the connection of communication cable.
• Replace the communication option.
ED
Emergency drive in operation
Appears during emergency drive operation.
• Emergency drive operation is performed by turning ON the X84 signal.
• The display is cleared when the emergency drive operation ends. (Refer to
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.
FN
Fan alarm
For the inverter that contains a cooling fan, FN appears on the operation panel when the cooling fan stops due
to a fault, low rotation speed, or different operation from the setting of Pr.244 Cooling fan operation selection.
When the cooling fan is replaced, check that the fan is not installed upside down.
Check the cooling fan for a failure.
Install the fan correctly. (Refer to
If the fan alarm still occurs after the fan is installed correctly, the fan may be faulty. Contact your sales
representative.
FN2
Internal fan alarm (IP55 compatible models only)
FN2 appears on the operation panel when the internal air circulation fan stops due to a fault or low rotation speed.
Check the internal air circulation fan for a failure.
The fan may be faulty. Contact your sales representative.
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FR-LU08 indication CF
FR-LU08 indication ED
FR-LU08 indication LDF
FR-LU08 indication FN
page 626.)
FR-LU08 indication FN2
page 279.)
page 330.)
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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