Mitsubishi Electric F700 Instruction Manual page 120

Operation Panel
E.PE2
Indication
Name
Parameter storage device fault (main circuit board)
Description
Trips when a fault occurred in the parameter 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 occurred consecutively for more
Description
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 stops the inverter output if communication is broken for 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 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 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 fault does not occur.
Check point
Find the cause of fault occurrence.
Corrective action
Eliminate the cause of the fault 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
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 and stops the inverter 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 internal power supply
Description
for 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.
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
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
FR-PU04 ————
FR-PU07 E.CTE
5
113