Mitsubishi Electric FR-D720-0.1K Instruction Manual page 266

Causes and corrective actions
E.5
Operation panel
indication
E.CPU
Name CPU fault
Description
Stops the inverter output if the communication fault 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 inverter.
Corrective action
Please contact your sales representative.
Operation panel
E.CDO
indication
Name Output current detection value exceeded
Description 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
Check point
current detection signal retention time, Pr. 167 Output current detection operation selection. (Refer to page 125)
Operation panel
E.IOH
indication
Name Inrush current limit circuit fault
Description
This function is activated when the resistor of the inrush current limit circuit overheats. The inrush current limit circuit fault
Check point
Check that frequent power ON/OFF is not repeated.
Configure a circuit where frequent power ON/OFF is not repeated.
Corrective action
If the problem still persists after taking the above measure, please contact your sales representative.
Operation panel
E.AIE
indication
Name
Analog input fault
Appears if voltage(current) is input to terminal 4 when the setting in Pr.267 Terminal 4 input selection and the setting of
Description
voltage/current input switch are different.
Check point
Check the setting of Pr. 267 Terminal 4 input selection and voltage/current input switch. (Refer to page 151).
Either give a frequency command by current input or set Pr. 267 Terminal 4 input selection, and voltage/current input
Corrective action
switch to voltage input.
Operation panel
E.SAF
indication
Name Safety circuit fault
Appears when safety circuit is malfunctioning.
Description
Appears when one of the lines between S1 and SC, or between S2 and SC is opened.
Check if the shorting wire between S1 and SC or between S2 and SC is disconnected when not using the safety
Check point stop function.
Check that the safety relay module or the connection has no fault when using the safety stop function.
When not using the safety stop function, short across terminals S1 and SC and across S2 and SC with shorting
wire. (Refer to page 27)
Corrective action
When using the safety stop function, check that wiring of terminal S1, S2 and SC is correct and the safety stop
input signal from safety relay module is operating properly. Refer to the Safety stop function instruction manual (BCN-
A211508-000) for causes and countermeasures. (Please contact your sales representative for the manual.)
NOTE
If protective functions of E.ILF, E.AIE, E.IOH, E.PTC, E.CDO, E.SAF are activated when using the FR-PU04, "Fault 14"
is displayed.
Also when the faults history is checked on the FR-PU04, the display is "E.14".
If faults other than the above appear, contact your sales representative.
264
Fault 5
FR-PU04
FR-PU07
CPU Fault
FR-PU04 Fault 14
FR-PU07 OC detect level
FR-PU04 Fault 14
FR-PU07 Inrush overheat
FR-PU04 Fault 14
FR-PU07 Analog in error
FR-PU04 Fault 14
Fault
FR-PU07
E.SAF