Causes and corrective actions
PROTECTIVE FUNCTIONS
657
6 5
Operation panel
indication
E.PTC FR-PU07 PTC activated
Name
PTC thermistor operation
Description
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
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 point
• Check the connection with the PTC thermistor.
• Check the Pr.561 and Pr.1016 settings.
• Check the motor for operation under overload.
Corrective action
Reduce the load.
Operation panel
indication
E.OPT FR-PU07 Option Fault
Name
Option fault
Description
• Appears when the AC power supply is connected to the terminal R/L1, S/L2, or T/L3 accidentally when a
high power factor converter (FR-HC2) or power regeneration common converter (FR-CV) is connected
(when Pr.30 Regenerative function selection = "2").
• Appears when torque command by the plug-in option is selected using Pr.804 Torque command source
selection and no plug-in option is mounted. This function is available under torque 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 point
• Check that the AC power supply is not connected to the terminal R/L1, S/L2, or T/L3 when a high power
factor converter (FR-HC2) or power regeneration common converter (FR-CV) is connected (when Pr.30 =
"2").
• Check that the plug-in option for torque command setting is connected.
• Check for the password lock with a setting of Pr.296 = "0, 100".
Corrective action
• Check the Pr.30 setting and wiring.
• The inverter may be damaged if the AC power supply is connected to the terminal R/L1, S/L2, or T/L3 when
a high power factor converter is connected. Please contact your sales representative.
• Check for connection of the plug-in option. Check the Pr.804 setting.
• 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 page 269.)
Operation panel
indication
E.OP1 FR-PU07 Option1 Fault
Name
Communication option fault
Description
The inverter trips if a communication line error occurs in the communication option.
Check point
• Check for an incorrect option function setting and operation.
• Check that the plug-in option is plugged into the connector properly.
• Check for a break in the communication cable.
• Check that the terminating resistor is fitted properly.
Corrective action
• Check the option function setting, etc.
• Connect the plug-in option securely.
• Check the connection of communication cable.
Operation panel
indication
E.16 to E.20
to
FR-PU07 —
Name
User definition error by the PLC function
Description
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.
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.
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