Mitsubishi Electric 800 Series Instruction Manual page 30

 Abnormal output current detection
Operation panel
indication
Description
Check point
Reference
 Inrush current limit circuit fault
Operation panel
indication
Description
Check point
Corrective action
Reference
 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 (Standard model / Ethernet model)
Operation panel
indication
Description
Check point
Corrective action
Reference
30
2. Protective Functions
2.5 Causes and corrective actions
E.CDO
The inverter output is shut off if the output current exceeds the Pr.150 Output current detection level setting.
This functions is available when "1" is set in Pr.167 Output current detection operation selection. When the
initial value (Pr.167 = "0") is set, this protective function is not available.
Check the settings of Pr.150, Pr.151 Output current detection signal delay time, Pr.166 Output current
detection signal retention time, and Pr.167.
FR-E800 Instruction Manual (Function)
E.IOH
The inverter output is shut off when the resistor of the inrush current limit circuit is overheated. The inrush current
limit circuit is faulty.
• Check that frequent power ON/OFF is not repeated.
• Check if the input side fuse (5A) in the power supply circuit of the inrush current limit circuit contactor is blown.
• Check that the power supply circuit of inrush current limit circuit contactor is not damaged.
Configure a circuit where frequent power ON/OFF is not repeated.
If the problem still persists after taking the above measure, contact your sales representative.
FR-E800 Instruction Manual (Function)
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 the wiring of terminals S1, S2 and PC is correct and the safety
stop input signal source such as a safety relay module is operating properly.
• 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)
FR-LU08 indication OC detect level
FR-LU08 indication Inrush overheat
FR-LU08 indication Analog input fault
FR-LU08 indication USB comm error
FR-LU08 indication safety circuit fault