Mitsubishi Electric FR-A700 Instruction Manual page 740

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
Corrective action
NOTES If protective functions of "E.ILF, E.PTC, E.PE2, E.EP, E.OD, E.CDO, E.IOH, E.SER, E.AIE or
E.USB" are activated when using the FR-PU04, "Fault 14" appears.
Also when the alarm history is checked on the FR-PU04, the display is "E.14".
If alarms other than the above appear, contact your sales representative.
7 - 22
E.USB
USB communication error
When the time set in Pr. 548 "USB communication check time interval" has broken, this
function stops the inverter output.
Check the USB communication cable.
Check the Pr. 548 "USB communication check time interval" setting.
Replace the USB communication cable.
Increase the Pr. 548 USB communication check time interval setting. Or, change the set-
ting to 9999.(Refer to section 6-487)
E.11
Opposite rotation deceleration error
The speed may not decelerate during low speed operation if the rotation direction of the
speed command and the estimated speed differ when the rotation is changing from forward
to reverse or from reverse to forward under real sensorless vector control.
At this time, the inverter output is stopped if the rotation direction will not change, causing
overload.
Check that the Pr. 71 "Applied motor" setting is appropriate.
Check that offline auto tuning and online auto tuning have been performed.
Check the setting of Pr. 71 "Applied motor".
Perform offline auto tuning, then online auto tuning.
Please contact your sales representative if these corrective actions are not sucessfull.
E.13
Internal circuit error
Appears when an internal circuit error occurred.
Please contact your sales representative.
FR-PU04 Fault 14
FR-PU07 USB comm error
FR-PU04
Fault 11
FR-PU07
FR-PU04
Fault 13
FR-PU07
Troubleshooting