6．2 Load Torque-Driver Input Current Characteristics
Driver input current of the
FBL
Ⅱ Series motor varies with the load torque. Load torque is roughly proportional to driver
input current. This characteristic may be used to estimate load torque from the driver input current. It holds only when the
motor is rotating at a steady speed. Starting and be-directional motions require greater current input, so the relationship
does not apply to these operations.
FBL575AW
−□
FBL5120AW
−□
FBL575CW
−□
FBL5120CW
−□
FBL575SW
−□
FBL5120SW
−□
21
3000 r/min
2000 r/min
300 r/min
2.0
1.5
1.0
0.5
1
2
3
0
0.1
0.2
0.3 [N･m]
1000 r/min
0
[kgfcm]
Driver Input Current
[A
]
Rated Torque
Torque
3000 r/min
2000 r/min
1000 r/min
300 r/min
1.5
1.0
0.5
Rated Torque
Driver Input Current
[A
]
0
1
2
3
0
0.1
0.2
0.3
Torque
[N･m]
[kgfcm]
3000 r/min
2000 r/min
1000 r/min
300 r/min
2.5
1.5
2.0
1.0
0.5
0
1
2
3
4
5
0
0.1
0.2
0.3
0.4
0.5 [N･m]
[kgfcm]
Driver Input Current
[A
]
Rated Torque
Torque
3000 r/min
2000 r/min
1000 r/min
300 r/min
2.0
1.5
1.0
0.5
0
1
2
3
4
5
0
0.1
0.2
0.3
0.4
0.5 [N･m]
[kgfcm]
Driver Input Current
[A
]
Rated Torque
Torque
3000 r/min
300 r/min
0
1
2
3
0
0.1
0.2
0.3
1.0
0.75
0.5
0.25
Torque
[N
･
m]
Rated Torque
Driver Input Current
[A
]
[kgfcm]
1000 r/min
2000 r/min
Rated Torque
Driver Input Current
[A
]
Torque
300 r/min
1000 r/min
2000 r/min
0
1.5
1.0
0.5
1
2
3
4
5
0
0.1
0.2
0.3
0.4
0.5 [N
･
m]
[kgfcm]
3000 r/min
