Mitsubishi Electric FR-XC-18.5K-PWM Instruction Manual page 141

Causes and corrective actions
Converter indication
Name
Description
Check point
Corrective action
Converter indication
Name
Description
Corrective action
Converter indication
Name
Description
Check point
Corrective action
Converter indication
Name
Description
Check point
Corrective action
140
PROTECTIVE FUNCTIONS
E.P
Parameter storage device fault (control circuit board)
The converter output is shut off if a fault occurs in the parameters stored. (EEPROM failure)
Check for too many number of parameter write times.
• Set "1" in Pr.342 (write to RAM) for the operation which requires frequent parameter writing via
communication, etc. Note that writing to RAM goes back to the initial status at power OFF.
• If the situation does not improve after taking the above measure, please contact your sales representative.
E.P
Parameter storage device fault (main circuit board)
The converter output is shut off if a fault occurs in the parameters stored. (EEPROM failure)
Contact your sales representative.
E. Q
Communication option fault
The converter output is shut off if a communication line error occurs in the communication option.
• Check for a wrong option function setting and operation.
• Check that the communication option is plugged into the connector securely.
• Check for a break in the communication cables.
• Check that the terminating resistor is fitted properly.
• Check the option function setting, etc.
• Connect the communication option securely.
• Check the connection of communication cables.
E.T
Connection mode fault
If the setting of connection mode selection switch (common bus regeneration mode or power regeneration
mode) does not match the actual wiring of the main circuit terminals, the protective function is activated to
stop the operation of the multifunction regeneration converter.
Check that the setting of Pr.415 SW2 setting status is correct. (Refer
• Check the wiring.
• Set the Pr.415 appropriately.
FR-PU07
Corrupt Memry
indication
FR-PU07
indication PE
(Alarm Hist)
FR-DU08
E.PE
indication
FR-PU07
PR storage alarm
indication
FR-PU07
indication PE2
(Alarm Hist)
FR-DU08
E.PE2
indication
FR-PU07
Option1 Fault
indication
FR-PU07
indication OP1
(Alarm Hist)
FR-DU08
E.OP1
indication
FR-PU07
Fault
indication
FR-PU07
indication ERR
(Alarm Hist)
FR-DU08
E.MF1
indication
page 10.)