Mitsubishi Electric 800 Series Instruction Manual page 642

Abbreviation E.PTC
Name
PTC thermistor operation
The inverter trips if resistance of the PTC thermistor connected between the terminal 2 and terminal 10 is
equal to or higher than the Pr.561 PTC thermistor protection level setting for a continuous time equal to or
Description
longer than the setting value in Pr.1016 PTC thermistor protection detection time. When the initial value
(Pr.561 = "9999") is set, this protective function is not available.
• Check the connection with the PTC thermistor.
Check point
• Check the Pr.561 and Pr.1016 settings.
• Check the motor for operation under overload.
Corrective action
Reduce the load.
Abbreviation E.OPT
Name
Option fault
• Appears when the AC power supply is connected to the terminal R/L1, S/L2, or T/L3 accidentally when
Pr.30 Regenerative function selection = "2 or 102".
• Appears when torque command by the plug-in option is selected using Pr.804 Torque command source
selection and no plug-in option is installed. This function is available under torque control.
Description
• Appears when either one of a Vector control compatible plug-in option or a control terminal option (FR-
A8TP) is not installed during machine end orientation control.
• Appears when the switch for manufacturer setting of the plug-in option is changed.
• Appears when a communication option is connected while Pr.296 Password lock level = "0 or 100".
• Check if "2 or 102" is set in Pr.30.
• Check that the plug-in option for torque command setting is connected.
• Check that the Vector control plug-in option and the control terminal option (FR-A8TP) are installed
Check point
correctly. Check that the settings of Pr.393 Orientation selection and Pr.862 Encoder option selection
are correct.
• Check for the password lock with a setting of Pr.296 = "0, 100".
• The setting values "2 and 102" of Pr.30 are for manufacturer setting. Do not set.
• Check for connection of the plug-in option. Check the Pr.804 setting.
• Install the Vector control plug-in option and the control terminal option (FR-A8TP) correctly. Set Pr.393 and
Pr.862 correctly. (Refer to
Corrective action
• Set the switch on the plug-in option, which is for manufacturer setting, back to the initial setting. (Refer to the
Instruction Manual of each option.)
• To apply the password lock when installing a communication option, set Pr.296  "0, 100".
(Refer to
Abbreviation E.OP1 to E.OP3
Name
Communication option fault
• The inverter trips if a communication line error occurs in the communication option.
Description
• When the FR-A8APR is installed to the inverter and a motor with a resolver is used, the inverter trips if the
FR-A8APR fails or the wiring of the resolver is not properly connected.
• Check for an incorrect option function setting and operation.
• Check that the plug-in option is plugged into the connector properly.
Check point
• Check for a break in the communication cable.
• Check that the terminating resistor is fitted properly.
• Check that the wiring of the resolver is correct. (When the FR-A8APR is used)
• Check the option function setting, etc.
• Connect the plug-in option securely.
Corrective action
• Check the connection of communication cable.
• Check the wiring of the resolver. (When the FR-A8APR is used)
• If the fault occurs again when the inverter is reset, contact your sales representative.
Abbreviation E.16 to E.20
Name
User definition error by the PLC function
The protective function is activated by setting "16 to 20" in the special register SD1214 for the PLC function.
The inverter trips when the protective function is activated.
Description
The protective function is activated when the PLC function is enabled. This protective function is not available
in the initial setting (Pr.414 = "0").
Any character string can be displayed on FR-LU08 or FR-PU07 by sequence programs.
Check point
• Check if "16 to 20" is set in the special register SD1214.
Corrective action
• Set a value other than "16 to 20" in the special register SD1214.
page 473.)
page 253.)
Causes and corrective actions
FR-LU08
PTC activated
FR-PU07
FR-LU08
Option Fault
FR-PU07
FR-LU08
Option1 Fault to Option3 Fault
FR-PU07
FR-LU08
Fault 16 to Fault 20
FR-PU07
PROTECTIVE FUNCTIONS
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