Mitsubishi Electric FR-A701 Instrucion Manual page 161

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
154
E.AIE
Analog input error
Stops the inverter output when 30mA or more is input or a voltage (7.5V or more) is input with the
terminal 2/4 set to current input.
Check the setting of Pr. 73 Analog input selection, Pr. 267 Terminal 4 input selection and voltage/current
input switch. (Refer to chapter 4 of
Either give a frequency command by current input or set Pr. 73 Analog input selection, Pr. 267 Terminal 4
input selection, and voltage/current input switch to voltage input.
E.4
Converter overcurrent
The current flows in the regeneration converter module exceeds the specified value, protective circuit
activates and stops the inverter output.
1. Check that sudden acceleration/deceleration is not performed.
2. Check for sudden load change.
3. Check that wiring is correct.
4. Check that instantaneous power failure did not occur.
5. Check that the thyristor load does not exist in the same power supply system.
1. Increase acceleration/deceleration time.
2. Keep load stable.
3. Wire the cables properly.
4. When a thyristor load exist in the same power supply system, install an AC reactor (FR-HAL).
E.8
Power supply fault
· When overvoltage occurs in the converter side during input phase failure detection
· When overvoltage occurs in the converter side during instantaneous power failure detection
· When fault of power supply frequency is detected
· When phase shift is not detected
When any of the above conditions applied, it is judged as power supply and the inverter output is
stopped.
Check the power supply and wiring.
Perform wiring correctly.
E.10
Converter transistor protection thermal operation (electronic thermal)
Current flowing in the module of the regeneration converter is less than the overcurrent shutoff level
and exceeds the specified value, electronic thermal relay activates for protection and the inverter
output is stopped.
· Check the motor for use under overload. (excess regeneration amount)
· Check that the thyristor load does not exist in the same power supply system.
· Reduce the load weight.
· When a thyristor load exists in the same power supply system, install an AC reactor (FR-HAL).
FR-PU04 Fault 14
FR-PU07 Analog in error
the instruction manual (applied).)
FR-PU04
Fault 4
FR-PU07
FR-PU04
Fault 8
FR-PU07
FR-PU04
Fault 10
FR-PU07