Mitsubishi Electric FR-A800 Series Instruction Manual page 794

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
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
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E.RET
Retry count excess
The inverter output is shut off if the operation cannot be resumed properly within the number of retries set in Pr.67
Number of retries at fault occurrence. This function is available when Pr.67 is set. This protective function is
not available in the initial setting (Pr.67 = "0").
Find the cause of the fault occurrence.
Eliminate the cause of the fault preceding this fault indication.
E.PE2
Parameter storage device fault (main circuit board)
The inverter output is shut off if a fault occurs in the parameter stored. (EEPROM failure)
――――
Contact your sales representative.
E.CPU
E. 5
E. 6
E. 7
CPU fault
The inverter output is shut off if the communication fault of the built-in CPU occurs.
Check for devices producing excess electrical noises around the inverter.
• Take measures against noises if there are devices producing excess electrical noises around the inverter.
• Contact your sales representative.
E.CTE
Operation panel power supply short circuit/RS-485 terminals power supply short circuit
• When the power supply for the operation panel (PU connector) is shorted, the power output is shutoff and the
inverter output is shut off. The use of the operation panel (parameter unit) and the RS-485 communication via
the PU connector are disabled.
To reset, enter the RES signal from the terminal, reset through communication via the RS-485 terminals, or
switch power OFF then ON again.
• When the power supply for the RS-485 terminals are short circuited, this function shuts off the power output.
At this time, communication from the RS-485 terminals cannot be made.
To reset, use on the operation panel, enter the RES signal, or switch power OFF then ON again.
• Check that the PU connector cable is not shorted.
• Check that the RS-485 terminals are connected correctly.
• Check PU and the cable.
• Check the connection of the RS-485 terminals.
E.P24
24 VDC power fault
• When the 24 VDC power output from the PC terminal is shorted, this function shuts off the power output.
At this time, all external contact inputs switch OFF. The inverter cannot be reset by entering the RES signal.
To reset it, use the operation panel, or switch power OFF, then ON again.
• Check for a short circuit in the PC terminal output.
• Check that the 24 V external power supply voltage is correct.
• Repair the short-circuited portion.
• Supply the power at 24 V. (If the power with insufficient voltage is supplied to the 24 V input circuit for a long
time, the inverter internal circuit may heats up. Although it will not damage the inverter, supply power at the
correct voltage.)
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FR-LU08 indication Retry count excess
FR-LU08 indication PR storage alarm
CPU Fault
Fault 5
FR-LU08 indication
Fault 6
Fault 7
FR-LU08 indication Circuit fault
FR-LU08 indication 24 VDC power fault
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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