
Causes and corrective actions
Protective functions
6 - 28
Operation panel
indication
E.USB
FR-LU08
USB comm error
Name
USB communication fault
Description
The inverter trips when the communication is cut off for the time set in Pr. 548 "USB
communication check time interval".
Check point
Check that the USB communication cable is connected securely.
Corrective action
Check the Pr. 548 setting.
Connect the USB communication cable securely.
Increase the Pr. 548 setting or set "9999." (Refer to page 5-511.)
Operation panel
indication
E.SAF
FR-LU08
Safety circuit fault
Name
Safety circuit fault
Description
The inverter trips when a safety circuit fault occurs.
The inverter trips if the either of the wire between S1 and SIC or S2 and SIC becomes non-
conductive while using the safety stop function.
When not using the safety stop function, the inverter trips when the shorting wire between
terminals S1 and PC or across S2 and PC is disconnected.
Check point
Check that the safety relay module or the connection has no fault when using the safety
stop function.
Check if the shorting wire between S1 and PC or between S2 and PC is disconnected when
not using the safety stop function.
Corrective action
When using the safety stop function, check that wiring of terminal S1, S2 and SIC is correct
and the safety stop input signal source such as a safety relay module is operating properly.
Refer to the Safety stop function instruction manual for causes and countermeasures.
(Please contact your sales representative for the manual.)
When not using the safety stop function, short across terminals S1 and PC and across S2 and
PC with shorting wires. (Refer to page 2-60.)
Operation panel
indication
E.PBT
FR-LU08
PBT fault
E.13
Intrnl circuit fault
E.BE
Brake transistor err
Name
Internal circuit fault
Description
The inverter trips when an internal circuit fault occurs.
Corrective action
Please contact your sales representative.
Operation panel
indication
E.OS
FR-LU08
Overspeed
occurrence
Name
Overspeed occurrence
Description
The inverter trips when the motor speed exceeds the Pr. 374 "Overspeed detection level" under
PM motor control. This protective function is not available in the initial status.
Check point
Check that the Pr. 374 setting is correct.
Corrective action
Set the Pr. 374 correctly.
Summary of Contents for FR-F800
Page 2: ......
Page 4: ......
Page 28: ...Related manuals Introduction 1 8 ...
Page 104: ...Connection of stand alone option units Installation and wiring 2 76 ...
Page 162: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Page 806: ...Outline dimension drawings Specifications 8 26 ...
Page 833: ......