Mitsubishi Electric FR-A740-00023 Instruction Manual page 413

Operation Panel
E.PE2
Indication
Name
Parameter storage device alarm (main circuit board)
Description
A fault occurred in parameters stored (EEPROM failure)
Check point
——————
Corrective action
Please contact your sales representative.
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
operation panel and 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
Description
occurred consecutively for more than permissible 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. This function also stops
the inverter output if communication is broken for the period of time set in Pr. 122 PU communication check time interval.
· Check that the FR-DU07 or parameter unit (FR-PU04/FR-PU07) is fitted tightly.
Check point
· Check the Pr. 75 setting.
Corrective action Fit the FR-DU07 or 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 stops the inverter
Description
output.
Check point
Find the cause of alarm occurrence.
Corrective action
Eliminate the cause of the error preceding this error indication.
E. 6
Operation Panel
E. 7
Indication
E.CPU
Name
CPU error
Description
Stops the inverter output if the communication error 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
Corrective action inverter.
· Please contact your sales representative.
Operation Panel
E.CTE
Indication
Name Operation panel power supply short circuit, RS-485 terminal power supply short circuit
When the operation panel power supply (PU connector) is shorted, this function shuts off the power
output. At this time, the operation panel (parameter unit) cannot be used and RS-485 communication
from the PU connector cannot be made. When the power supply for the RS-485 terminals are shorted,
Description
this function shuts off the power output.
At this time, communication from the RS-485 terminals cannot be made.
To reset, enter the RES signal or switch power off, then on again.
1. Check for a short circuit in the PU connector cable.
Check point
2. Check that the RS-485 terminals are connected correctly.
1. Check the PU and cable.
Corrective action
2. Check the connection of the RS-485 terminals
Operation Panel
E.MB1 to 7
Indication
Name
Brake sequence error
The inverter output is stopped when a sequence error occurs during use of the brake sequence
Description
function (Pr. 278 to Pr. 285). (Refer to page 208)
Check point
Find the cause of alarm occurrence.
Corrective action Check the set parameters and perform wiring properly.
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 6
FR-PU04
Fault 7
FR-PU07
CPU Fault
⎯⎯
FR-PU04
FR-PU07 E.CTE
⎯⎯
FR-PU04
to
FR-PU07 E.MB1 Fault to E.MB7 Fault
5
403