Mitsubishi FR-F720-00046-NA Instruction Manual page 352

Causes and corrective actions
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
...
Specifications differ according to the date assembled. Refer to page 399 to check the SERIAL number.
Operation Panel
Indication
Name
Description
Check point
Corrective action
...
Specifications differ according to the date assembled. Refer to page 399 to check the SERIAL number.
342
E.PTC
PTC thermistor operation
Trips when the motor overheat status is detected for 10s or more by the external PTC thermistor input
connected to the terminal AU.
This fault functions when "63" is set in Pr. 184 AU terminal function selection and AU/PTC switchover
switch is set in PTC side. When the initial value (Pr. 184 = "4") is set, this protective function does not
function.
· Check the connection between the PTC thermistor switch and thermal relay protector.
· Check the motor for operation under overload.
· Is valid setting ( = 63) selected in Pr. 184 AU terminal function selection ? (Refer to page 110, 124.)
Reduce the load weight.
E.OPT
Option fault
· Appears when the AC power supply is connected to the terminal R/L1, S/L2, T/L3 accidentally when
a high power factor converter is connected.
· Appears when the switch for the manufacturer setting of the plug-in option is changed.
· Appears when a communication option is connected while Pr. 296 = "0 or 100".
· Check that the AC power supply is not connected to the terminal R/L1, S/L2, T/L3 when a high
power factor converter (FR-HC, MT-HC) or power regeneration common converter (FR-CV) is
connected.
· Check if password lock is activated by setting Pr. 296 = "0, 100"
· Check the parameter (Pr. 30) setting and wiring.
· The inverter may be damaged if the AC power supply is connected to the terminal R/L1, S/L2, T/L3
when a high power factor converter is connected. Please contact your sales representative.
· Return the switch for the manufacturer setting of the plug-in option to the initial status. (Refer to
instruction manual of each option)
· To apply the password lock when installing a communication option, set Pr.296 ≠ "0,100". (Refer to
page 194).
· If the problem still persists after taking the above measure, please contact your sales representative.
E.OP1
E.OP2
Communication option fault
Stops the inverter output when a communication line fault occurs in the communication option.
· Check for a wrong option function setting and operation.
· Check that the plug-in option is plugged into the connector securely.
· Check for a break in the communication cable.
· Check that the terminating resistor is fitted properly.
· Check the option function setting, etc.
· Connect the plug-in option securely.
· Check the connection of communication cable.
FR-PU04 Fault 14
FR-PU07(-01) PTC activated
FR-PU04
Option Fault
FR-PU07(-01)
FR-PU04 Option 1 Fault
FR-PU07(-01) Option 2 Fault