￿Torque Characteristic of the Standard Motor with PLG (Example: SF-JR Standard Motor with PLG (4 poles))

With Reference to 1800r/min (60Hz) Torque

 

 

 

 

Cyclic operation mode setting

 

 

Continuous operation mode setting

[When the inverter used has a capacity one rank higher

 

[ When the inverter used has the same capacity as

 

than that of the motor and the rated voltage is input]

 

that of the motor and the rated voltage is input]

 

 

Short-duration

 

 

 

 

Short-duration

 

 

 

 

 

 

 

 

 

 

 

150

maximum torque

 

 

 

150

maximum torque

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.5kW or less

 

 

 

1.5kW or less

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.2kW or more

 

 

 

 

Continuous

 

 

 

[%]

 

50%ED

(Note

2)

 

 

 

 

100

(Note 3)

[%]

100

 

 

operation

 

torque

2.2kW or more

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Torque

 

 

 

 

 

 

 

 

 

Torque

75

 

 

 

 

 

 

 

(Note 4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

900 1800

 

3600 (Note 1)

 

0

600 15001800

3600 (Note 1)

 

 

Speed [r/min]

 

 

 

 

 

 

Speed [r/min]

 

 

Note: 1. The maximum speed is 1) 0.4kW to 7.5kW: 3600r/min, 2) 11kW to 30kW: 3000r/min, 3) 37kW to 55kW: 1950r/min.

2.Continuous, repetitive operation of 50%ED can be performed in cycle time of 10 minutes. Note that the maximum continuous operation time is 5 minutes.

3.Use the constant-torque motor (SF-JRCA with PLG) when 50%ED with 100% torque is required for 2.2kW or more at 900r/min or less.

4.Use the constant-torque motor (SF-JRCA with PLG) when continuous 100% torque is required for 2.2kW or more at 600r/min or less.

5.To provide 150% torque from 0Hz to the rated speed of the motor the inverter should be one rank higher than the motor.

6.Cyclic operation when the inverter and motor have the same capacity is possible but typically only 50% torque can

be produced.

7.Continuous operation when the inverter capacity is one rank higher than the motor will produce the same results as when the inverter and motor capacity are the same (as shown above).

48