Mitsubishi Electric FR-E700 Instruction Manual page 543

Troubleshooting
Operation panel
indication
Name
Description
Check point
Corrective action
This fault is only available for the frequency inverter FR-E700 SC ENE.
Operation panel
indication
Name
Description
Check point
Corrective action
This fault is only available for the frequency inverter FR-E700 SC EC.
FR-E700 SC EC/ENE
E.OP1
Ethernet communication fault
Appears when Ethernet communication is interrupted by physical factors while Pr. 851
"Ethernet signal loss detection function selection" = "3" (initial value).
The inverter output is shut off when Ethernet communication is cut off for the time set in
Pr. 852 "Ethernet communication check time interval" or longer between the inverter and all
devices with the IP addresses in the range specified for the Ethernet command source
selection (Pr. 844 to Pr. 849).
Stops the inverter output when excessive noise occurs around the inverter.
When the CC-Link IE Field Network Basic is used, the inverter output is shut off when the
data addressed to the own station is not received for the predetermined timeout period or
longer, or when the status bit of the cyclic transmission addressed to the own station turns
OFF (when the master controller gives a command to stop the cyclic transmission). (For the
details of the timeout period, status bit of the cyclic transmission, and command to stop the
cyclic transmission, refer to the Instruction Manual of the master controller which supports
the CC-Link IE Field Network Basic.)
Check for a break in the Ethernet cable.
Check that the Pr. 852 setting is not too short.
Check for excessive noise around the inverter.
When the CC-Link IE Field Network Basic is used, check that the timeout period set in the
master is not shorter than the period during which the inverter does not receive the data
addressed to the own station.
When the CC-Link IE Field Network Basic is used, check that the status bit of the cyclic
transmission addressed to the own station is not OFF.
Check that the Ethernet cable is correctly connected to the Ethernet connector. Check that
the Ethernet cable is not broken.
Set a larger value in Pr. 852.
When excessive noise occurs around the inverter, change the communication setting of the
master. (The noise may be reduced by setting a shorter timeout period or increasing the
number of retries in the communication setting of the master.)
When the CC-Link IE Field Network Basic is used, set a timeout period longer than the period
during which the inverter does not receive the data addressed to the own station.
When the CC-Link IE Field Network Basic is used, turn ON the status bit of the cyclic
transmission addressed to the own station.
E.1
Option fault
Stops the inverter output if a contact fault or the like of the connector between the inverter
and communication option occurs.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
Check that the plug-in option is plugged into the connector securely.
Check for excess electrical noises around the inverter.
Check the switch position for the manufacturer setting of the plug-in option.
Connect the plug-in option securely.
Take measures against noises if there are devices producing excess electrical noises around
the inverter.
If the problem still persists after taking the above measure, please contact your sales
representative or distributor.
Return the switch position for the manufacturer setting of the plug-in option to the initial
status. (Refer to the instruction manual of each option)
Causes and corrective actions
FR-PU04
Option slot alarm 1
FR-PU07
FR-PU04
Fault 1
FR-PU07
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