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Mitsubishi Electric FR-E700 Instruction Manual Page 280

Fr-e740-016 to 300 - ec; fr-e720s-008 to 110 - ec.
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Operation Panel
E.PE2
Indication
Name
Internal board fault
Description
When a combination of control board and main circuit board is wrong, the inverter is tripped.
Check point
Please contact your sales representative.
Corrective action
(For parts replacement, consult the nearest Mitsubishi FA Center.)
Operation panel
E.PUE
indication
Name
PU disconnection
This function stops the inverter output if communication between the inverter and PU is suspended, e.g. the
parameter unit is disconnected, when "2", "3", "16" or "17" was set in Pr. 75 Reset selection/disconnected PU detection/
PU stop selection.
This function stops the inverter output when communication errors occurred consecutively for more than permissible
Description
number of retries when a value other than "9999" is set in Pr. 121 Number of PU communication retries during the RS-
485 communication with the PU connector (use Pr. 502 Stop mode selection at communication error to change).
This function also stops the inverter output if communication is broken within the period of time set in Pr. 122 PU
communication check time interval during the RS-485 communication with the PU connector.
Check that the parameter unit (FR-PU04/FR-PU07) is connected properly.
Check point
Check the Pr. 75 setting.
Corrective action
Connect the parameter unit (FR-PU04/FR-PU07) securely.
Operation panel
E.RET
indication
Name
Retry count excess
If operation cannot be resumed properly within the number of retries set, this function trips the inverter.
Description
Functions only when Pr. 67 Number of retries at fault occurrence is set.
When the initial value (Pr. 67 = "0") is set, this protective function does not function.
Check point
Find the cause of fault occurrence.
Corrective action
Eliminate the cause of the error preceding this error indication.
E. 5
E. 6
Operation panel
indication
E. 7
E.CPU
Name
CPU fault
Description
Stops the inverter output if the communication fault of the built-in CPU occurs.
Check point
Check for devices producing excess electrical noises around the inverter.
Take measures against noises if there are devices producing excess electrical noises around the inverter.
Corrective action
Please contact your sales representative.
Operation panel
E.MB4 to 7
indication
Name
Brake sequence fault
The inverter output is stopped when a sequence error occurs during use of the brake sequence function (Pr. 278 to
Description
Pr. 283) . This protective function does not function in the initial status. (Refer to page 126).
Check point
Find the cause of alarm occurrence.
Corrective action
Check the set parameters and perform wiring properly.
Operation panel
E.IOH
indication
Name
Inrush current limit circuit fault
Description
Stops the inverter output when the resistor of inrush current limit circuit overheated. The inrush current limit circuit fault
Check point
Check that frequent power ON/OFF is not repeated.
Configure a circuit where frequent power ON/OFF is not repeated.
Corrective action
If the problem still persists after taking the above measure, please contact your sales representative.
Causes and corrective actions
FR-PU04
Fault 14
FR-PU07
PR storage alarm
FR-PU04
PU Leave Out
FR-PU07
FR-PU04
Retry No Over
FR-PU07
Fault 5
Fault 6
FR-PU04
FR-PU07
Fault 7
CPU Fault
to
FR-PU04
E.MB4 Fault to E.MB7 Fault
FR-PU07
FR-PU04
Fault 14
FR-PU07
Inrush overheat
5
277

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