Mitsubishi Electric F700 Instruction Manual page 253

Operation Panel
E.RET
Indication
Name Retry count excess
If operation cannot be resumed properly within the number of retries set, this function stops the inverter
Description
output.
Check point
Find the cause of alarm occurrence.
Corrective action
Eliminate the cause of the error preceding this error indication.
E. 6
Operation Panel
E. 7
Indication
E.CPU
Name CPU error
Description
Stops the inverter output if the communication error of the built-in CPU occurs.
Check point
Check for devices producing excess electrical noises around the inverter.
· Take measures against noises if there are devices producing excess electrical noises around the
Corrective action inverter.
· Please contact your sales representative.
Operation Panel
E.CTE
Indication
Name
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,
Description
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.
Check point
2. Check that the RS-485 terminals are connected correctly.
1. Check the PU and cable.
Corrective action
2. Check the connection of the RS-485 terminals
Operation Panel
E.P24
Indication
Name
24VDC power output short circuit
When the 24VDC power output from the PC terminal is shorted, this function shuts off the power output.
Description 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 point · Check for a short circuit in the PC terminal output.
Corrective action · Remedy the earth (ground) fault portion.
Operation Panel
E.CDO
Indication
Name
Output current detection value exceeded
This function is activated when the output current exceeds the Pr. 150 Output current detection level
Description
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.
Check point
(Refer to
Operation Panel
E.IOH
Indication
Name Inrush current limit circuit alarm
This function is activated when the resistor of the inrush current limit circuit overheats. The inrush
Description
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
Check point
inrush current suppression circuit contactor (FR-F740-132K or more) or no fault is found in the power
supply circuit of the contactor.
· Check that the power supply circuit of inrush current limit circuit contactor is not damaged.
Configure a circuit where frequent ON/OFF is not repeated.
Corrective action
If the problem still persists after taking the above measure, please contact your sales representative.
FR-PU04
FR-PU07
FR-PU04
FR-PU07
FR-PU04
FR-PU07
FR-PU04
FR-PU07
FR-PU04
FR-PU07
page 112.)
FR-PU04
FR-PU07
Causes and corrective actions
Retry No Over
Fault 6
Fault 7
CPU Fault

E.CTE
E.P24
Fault 14
OC detect level
Fault 14
Inrush overheat
5
245