Mitsubishi Electric F700 Instruction Manual page 105

Causes and corrective actions
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
Operation Panel
Indication
Name
Description
Check point
Corrective action
100
E.RET
Retry count excess
If operation cannot be resumed properly within the number of retries set, this function stops the inverter
output.
Find the cause of alarm occurrence.
Eliminate the cause of the error preceding this error indication.
E. 6
E. 7
E.CPU
CPU error
Stops the inverter output if the communication error 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.
· Please contact your sales representative.
E.CTE
Operation panel power supply short circuit, RS-485 terminal power supply short circuit
When the operation panel power supply (PU connector) is shorted, this function shuts off the power
output. At this time, the operation panel (parameter unit) cannot be used and RS-485 communication
from the PU connector cannot be made. When the power supply for the RS-485 terminals are shorted,
this function shuts off the power output.
At this time, communication from the RS-485 terminals cannot be made.
To reset, enter the RES signal or switch power off, then on again.
1. Check for a short circuit in the PU connector cable.
2. Check that the RS-485 terminals are connected correctly.
1. Check the PU and cable.
2. Check the connection of the RS-485 terminals
E.P24
24VDC power output short circuit
When the 24VDC 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.
· Remedy the earth fault portion.
E.CDO
Output current detection value exceeded
This function is activated when the output current exceeds the Pr. 150 Output current detection level
setting.
Check the settings of Pr. 150 Output current detection level, Pr. 151 Output current detection signal delay time,
Pr. 166 Output current detection signal retention time, Pr. 167 Output current detection operation selection.
(Refer to Instruction Manual (applied).)
E.IOH
Inrush current limit circuit alarm
This function is activated when the resistor of the inrush current limit circuit overheats. The inrush
current limit circuit failure
· Check that frequent ON/OFF is not repeated.
· Check that no meltdown is found in the primary side fuse (5A) in the power supply circuit of the
inrush current suppression circuit contactor (FR-F740-03250 or more) or no fault is found in the
power supply circuit of the contactor.
Configure a circuit where frequent ON/OFF is not repeated.
If the problem still persists after taking the above measure, please contact your sales representative.
FR-PU04
Retry No Over
FR-PU07
Fault 6
FR-PU04
Fault 7
FR-PU07
CPU Fault

FR-PU04
FR-PU07 E.CTE
FR-PU04
E.P24
FR-PU07
FR-PU04 Fault 14
FR-PU07 OC detect level
FR-PU04 Fault 14
FR-PU07 Inrush overheat