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163
Errors (Alarms)
3
PROTECTIVE FUNCTIONS
Operation Panel Indication
PS FR-PU04 PS
Name
PU stop
Description
Pr. 75 "reset selection/PU stop selection" had been set and a stop
was made by pressing the of the operation panel or
parameter unit (FR-PU04) during operation in the external
operation mode.
Check point
Check for a stop made by pressing the of the operation
panel during external operation.
Corrective action Refer to page 105.
Operation Panel Indication
UV
Name
Undervoltage
Description
If the power supply voltage of the inverter reduces, the control
circuit will not operate properly and will result in decreased motor
torque or increased heat generation. To prevent this, if the power
supply voltage reduces below about 115VAC (about 230VAC for
the three-phase 400V power input series, about 58VAC for the
single-phase 100V power input series), this function stops the
inverter output.
Check point
• Check for a start of large-capacity motor.
• Check that the power supply capacity is as indicated in the
specifications (Refer to page 170.).
Corrective action
Check the power supply system equipment such as the power
supply.
STOP
RESET
STOP
RESET