Mitsubishi Electric FR-S520E Series Instruction Manual page 187

Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
PS
PU stop
Pr. 75 "reset selection/PU stop selection" had been set and a stop
was made by pressing the
parameter unit (FR-PU04) during operation in the external
operation mode.
Check for a stop made by pressing the
panel during external operation.
Refer to page 115.
UV
Undervoltage
If the power supply voltage of the inverter decreases, 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 decreases 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 for a start of large-capacity motor.
• Check that the power supply capacity is as indicated in the
specifications (Refer to page 196.).
Check the power supply system equipment such as the power
supply.
177
FR-PU04
STOP
of the operation panel or
RESET
STOP
of the operation
RESET
Errors (Alarms)
PS
3