Mitsubishi Electric 800 Series Instruction Manual page 584

Abbreviation E.SER
Name Communication fault (inverter)
Description The inverter trips when communication error occurs consecutively for the permissible number of retries or
more when Pr.335 RS-485 communication retry count  "9999" during RS-485 communication from the RS-
485 terminals. The inverter also trips if communication is broken for the period of time set in Pr.336 RS-485
communication check time interval.
Check point Check the RS-485 terminal wiring.
Corrective action Perform wiring of the RS-485 terminals properly.
Abbreviation E.AIE
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
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.
Abbreviation E.USB
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
Abbreviation E.SAF
Name Safety circuit fault
Description • Appears when internal circuits are malfunctioning.
• Appears when one of the lines between S1 and PC, or between S2 and PC is opened.
• Settings of the switches (SW3 and SW4) for manufacturer setting may have been changed from the initial
settings.
Check point • Check if the shorting wire across the terminals S1 and PC or the terminals S2 and PC is disconnected.
• Check that the initial position of each switch was not changed.
Corrective action • Short across the terminals S1 and PC and the terminals S2 and PC with shortening wires.
• Set each manufacturer setting switch to the initial position (OFF). (Refer to
switches.)
Abbreviation E.PBT
E.13
E.BE
Name Internal circuit fault
Description The inverter trips when an internal circuit fault occurs.
Corrective action Please contact your sales representative.
Abbreviation E.OS
Name Overspeed occurrence
Description The inverter trips when the motor speed exceeds the Pr.374 Overspeed detection level under PM motor
control. When Pr.374 = "9999 (initial value)", the inverter output is shut off when the motor speed exceeds the
"maximum motor frequency + 10 Hz".
Check point • Check that the Pr.374 setting is correct.
Corrective action • Set the Pr.374 correctly.
FR-LU08 VFD Comm error
FR-PU07
FR-LU08 Analog input fault
FR-PU07 Analog in error
FR-LU08 USB comm error
FR-PU07
page 532.)
FR-LU08 Safety circuit fault
FR-PU07 E.SAF
FR-LU08 PBT fault
FR-PU07 E.PBT
FR-LU08 Intrnl circuit fault
FR-PU07 Fault 13
FR-LU08 Brake transistor err
FR-PU07 Br.Cct.Fault
FR-LU08 Overspeed occurrence
FR-PU07 E.OS
6. PROTECTIVE FUNCTIONS
6.4 Causes and corrective actions
page 318)
page 18 for the positions of the
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