72
Causes and corrective actions
Operation Panel
Indication
E. 6
FR-PU04
Fault 6
E. 7
Fault 7
E.CPU
CPU Fault
Name
CPU fault
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.
Corrective action
· Take measures against noises if there are devices producing excess electrical noises around the
inverter.
· Please contact your sales representative.
Operation Panel
Indication
E.CTE
FR-PU04
Name
Operation panel power supply short circuit, RS-485 terminal power supply short circuit
Description
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.
Check point
1. Check for a short circuit in the PU connector cable.
2. Check that the RS 485 terminals are connected correctly.
Corrective action
1. Check the PU and cable.
2. Check the connection of the RS-485 terminals
Operation Panel
Indication
E.P24
FR-PU04
E.P24
Name
24VDC power output short circuit
Description
When the 24VDC power output from the PC terminal is shorted, this function shuts off the power output.
At this time, all external contact inputs switch off. The inverter cannot be reset by entering the RES
signal. To reset it, use the operation panel or switch power off, then on again.
Check point
· Check for a short circuit in the PC terminal output.
Corrective action
· Remedy the ground fault portion.
Operation Panel
Indication
E.CDO
FR-PU04
Fault 14
Name
Output current detection value excess
Description
This function is activated when the output current exceeds the
Pr. 150 Output current detection level
setting.
Check point
Check the settings of
Pr. 150 Output current detection level
,
Pr. 151 Output current detection signal delay
time
,
Pr. 166 Output current detection signal retention time
,
Pr. 167 Output current detection operation
selection
.
(Refer to the Instruction Manual (applied).)
Operation Panel
Indication
E.IOH
FR-PU04
Fault 14
Name
Inrush resistance overheat
Description
This function is activated when the resistor of the inrush current limit circuit overheats. (activated
when the temperature reaches or exceeds 180°C (356°F) for 5s consecutively)
Check point
1. Check that the inrush current is not large.
2. Check that frequent ON/OFF is not repeated in the circuit which starts upon powering on.
Corrective action
1. The inrush current limit circuit failure
2. Configure a circuit where frequent ON/OFF is not repeated.
If the problem still persists after taking the above measure, please contact your sales
representative.
Summary of Contents for FR-F700 Series
Page 134: ...MEMO ...
