Mitsubishi Electric FR-A700 Instruction Manual page 145

Causes and corrective actions
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
140
E.PE2
Parameter storage device alarm (main circuit board)
A fault occurred in parameters stored (EEPROM failure)
——————
Please contact your sales representative.
E.PUE
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
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 the Pr. 75 setting.
Fit the FR-DU07 or parameter unit (FR-PU04/FR-PU07) securely.
E.RET
Retry count excess
If operation cannot be resumed properly within the number of retries set, this function stops the inverter
output.
Find the cause of alarm occurrence.
Eliminate the cause of the error preceding this error indication.
E. 6
E. 7
E.CPU
CPU error
Stops the inverter output if the communication error of the built-in CPU occurs.
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.
· Please contact your sales representative.
E.CTE
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,
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.
2. Check that the RS-485 terminals are connected correctly.
1. Check the PU and cable.
2. Check the connection of the RS-485 terminals
E.MB1 to 7
Brake sequence error
The inverter output is stopped when a sequence error occurs during use of the brake sequence
function (Pr. 278 to Pr. 285). (Refer to page 209)
Find the cause of alarm occurrence.
Check the set parameters and perform wiring properly.
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