Mitsubishi FR-A800

Causes and corrective actions
660
PROTECTIVE FUNCTIONS
Operation panel
indication
E.AIE FR-PU07 Analog in error
Name
Analog input fault
Description
The inverter trips when a 30 mA or higher current or a 7.5 V or higher voltage is input to terminal 2 while the
current input is selected by Pr.73 Analog input selection, or to terminal 4 while the current input is selected
by Pr.267 Terminal 4 input selection.
Check point
Check the Pr.73, Pr.267, and the voltage/current input switch settings.(Refer to page 406)
Corrective action
Either give a current less than 30 mA, or set Pr.73, Pr.267, and the voltage/current input switch to the voltage
input and input a voltage.
Operation panel
indication
E.USB FR-PU07 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 594.)
Operation panel
indication
E.SAF FR-PU07
E.SAF
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 57.)
Operation panel
indication
E.PBT
FR-PU07
Fault
E.13 Fault 13
Name
Opposite rotation deceleration fault
Description
The inverter trips when an internal circuit fault occurs.
Corrective action
Please contact your sales representative.
Operation panel
indication
E.OS FR-PU07 E.OS
Name
Overspeed occurrence
Description
The inverter trips when the motor speed exceeds the Pr.374 Overspeed detection level under encoder
feedback control, Real sensorless vector control, vector control, and PM sensorless vector control. This
protective function is not available in the initial status.
Check point
• Check that the Pr.374 setting is correct.
• Check that the number of encoder pulses does not differ from the actual number of Pr 369 Number of
encoder pulses (under encoder feedback control or vector control).
Corrective action
• Set the Pr.374 correctly.
• Set the Pr 369 correctly (under encoder feedback control or vector control).