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Switching from star-delta operation
I replaced a motor (blower) that had been started in star-delta configuration with the F520. But it always trips at frequency around 23 to 26 Hz.
The situation does not change by extending the acceleration time.
(R?U?Y), (S?V?Z), and (T?W?X) are each connected.
I confirmed that connection was correct. Are there any other possible causes?
Models
Inverter: FR-F520-22K, Motor: SB-JR22kW4P
The situation does not change by extending the acceleration time.
(R?U?Y), (S?V?Z), and (T?W?X) are each connected.
I confirmed that connection was correct. Are there any other possible causes?
Models
Inverter: FR-F520-22K, Motor: SB-JR22kW4P
- Category :
Answer
It is probable that the torque is insufficient because the load characteristics and inverter output characteristics do not match and the output current value increases, resulting in a thermal trip.
To match the load characteristics and inverter output characteristics, change the inverter output characteristics by changing Pr.14 from "1" (for variable-torque load) to "0" (for constant-torque load).
To match the load characteristics and inverter output characteristics, change the inverter output characteristics by changing Pr.14 from "1" (for variable-torque load) to "0" (for constant-torque load).
- Product Name
- Inverter, magnet motor drive
- Series
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