Causes and corrective actions
662
PROTECTIVE FUNCTIONS
Operation panel
indication
E.EP
FR-PU07 E.EP
Name
Encoder phase fault
Description
The inverter trips when the rotation command of the inverter differs from the actual motor rotation direction
detected from the encoder during offline auto tuning. This protective function is not available in the initial
status.
Check point
• Check for mis-wiring of the encoder cable.
• Check if the Pr.359 Encoder rotation direction setting is incorrect.
Corrective action
• Perform connection and wiring securely.
• Change the Pr.359 setting.
Operation panel
indication
E.IAH FR-PU07 Fault
Name
Abnormal internal temperature (IP55 compatible models only)
Description
The inverter trips when the inverter internal temperature reaches the specified value or higher.
Check point
• Check for too high surrounding air temperature.
• Check if the internal air circulation fan or the cooling fan stops due to a fault.
Corrective action
• Install an inverter suitable for the installation environment. (Refer to the Instruction Manual (Hardware) of the
FR-A806.)
• Replace the internal air circulation fan or the cooling fan.
Operation panel
indication
E.LCI FR-PU07 Fault
Name
4 mA input fault
Description
The inverter trips when the analog input current is 2 mA or less for the time set in Pr.778 4 mA input check
filter. This function is available when Pr.573 4 mA input check selection = "2 or 3". (Refer to page 426.)
This function is not available in the initial status.
Check point
• Check for a break in the wiring for the analog current input.
• Check that the Pr.778 setting is not too short.
Corrective action
• Check the wiring for the analog current input.
• Set the Pr.778 setting larger.
Operation panel
indication
E.PCH FR-PU07 Fault
Name
Pre-charge fault
Description
• The inverter trips when the pre-charge time exceeds Pr.764 Pre-charge time limit.
• The inverter trips when the measured value exceeds Pr.763 Pre-charge upper detection level during pre-
charging.
• This function is available when Pr.764 and Pr.763 are set. This protective function is not available in the
initial status.
Check point
• Check that the Pr.764 setting is not too short.
• Check that the Pr.763 setting is not too small.
• Check that the Pr.127 PID control automatic switchover frequency setting is not too low.
• Check for a break in the connection to the pump.
Corrective action
• Set the Pr.764 setting longer.
• Set the Pr.763 setting larger.
• Set the Pr.127 setting higher.
• Check the connection to the pump.
Operation panel
indication
E.PID FR-PU07
Fault
PID Signal Error
Name
PID signal fault
Description
The inverter trips if the measured value exceeds the PID upper limit or PID lower limit parameter setting, or
the absolute deviation value exceeds the PID deviation parameter setting during PID control.
Set this function in Pr.131 PID upper limit, Pr.132 PID lower limit, Pr.553 PID deviation limit, and Pr.554
PID signal operation selection. (Refer to page 501.) This protective function is not available in the initial
status.
Check point
• Check the meter for a failure or break.
• Check that the parameter settings are correct.
Corrective action
• Check that the meter has no failure or break.
• Set the parameters correctly.
Vector
Vector
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