Mitsubishi Electric 800 Series Instruction Manual page 30

 Analog input fault
Operation panel
indication
Description
Check point
Corrective action
Reference
 USB communication fault
Operation panel
indication
Description
Check point
Corrective action
Reference
 Safety circuit fault
Operation panel
indication
Description
Check point
Corrective action
Reference
 Overspeed occurrence
Operation panel
indication
Description
Check point
Corrective action
Reference
 Speed deviation excess detection
Operation panel
indication
Description
Check point
Corrective action
Reference
29
2. Protective Functions
2.5 Causes and corrective actions
E.AIE
The inverter output is shut off 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 the Pr.73, Pr.267, and the voltage/current input switch settings.
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.
FR-E800 Instruction Manual (Function)
E.USB
The inverter output is shut off when the communication is cut off for the time set in Pr.548 USB communication
check time interval.
• Check that the USB communication cable is connected securely.
• Check the Pr.548 setting.
• Connect the USB communication cable securely.
• Increase the Pr.548 setting or set "9999."
FR-E800 Instruction Manual (Function)
E.SAF
• The inverter output is shut off when a safety circuit fault occurs.
• The inverter output is shut off if the either of the wire between S1 and PC or S2 and PC becomes non-
conductive while using the safety stop function.
• When the safety stop function is not used, the inverter output is shut off when the shorting wire between
terminals S1 and PC or across S2 and PC is disconnected.
• 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.
• 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. (Contact your sales representative for the manual.)
• When the safety stop function is not used, short across terminals S1 and PC and across S2 and PC with
shorting wires.
• FR-E800 Instruction Manual (Function)
• FR-E800 Instruction Manual (Functional Safety)
E.OS
The inverter output is shut off when the motor speed exceeds the Pr.374 Overspeed detection level under Real
sensorless vector control and PM sensorless vector control. This protective function is not available in the initial
status.
• Check that the Pr.374 setting is correct.
• Set the Pr.374 correctly.
FR-E800 Instruction Manual (Function)
E.OSD
• The inverter output is shut off if the motor speed is increased or decreased under the influence of the load etc.
with Pr.285 Speed deviation excess detection frequency set and cannot be controlled in accordance with
the speed command value.
• Check that the settings of Pr.285 and Pr.853 Speed deviation time are correct.
• Check for sudden load change.
• Set Pr.285 and Pr.853 correctly.
• Keep the load stable.
FR-E800 Instruction Manual (Function)