OVERCURRENT SHUTDOWN DURING ACCELERATION
UnclassifiedSpeed
What This Code Means
Protection circuit operates to stop the output of the inverter during acceleration; Protection circuit operates to stop the output of the inverter during constant-speed operation; Protection circuit operates to stop the output of the inverter during deceleration or stoppage; Electronic thermal function operates to stop the output of the inverter to protect the output transistor; Pre-alarm indication (TH indication) appears; Protection circuit operates to stop the output of the inverter
Possible Causes
- •Inverter output current reaches about 170% of the rated current during acceleration
- •Inverter output current reaches about 170% of the rated current during constant-speed operation
- •Inverter output current reaches about 170% of the rated current during deceleration
- •Inverter output current equal to or higher than 120% of the rated current flows but remains less than 170% for 60 seconds (inverse time characteristics)
- •Motor is overheated to 85% of the setting value of the electronic thermal function due to overload during constant-speed operation
- •Motor is overheated to 85% of the setting value of the electronic thermal function due to decrease in cooling performance during constant-speed operation
- •Overheating reaches the specified limit value of the electronic thermal function
Suggested Actions
- 1Contact nearest office or distributor for details and countermeasures because technical knowledge is required
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