G-1 closed loop step motor

Introduction to closed loop stepping technology 1.Do not lose step Use of photoelectric encoder feedback motor position constitutes a closed-loop stepping drive system; The traditional stepping motor drive system may cause lost step or stall during sudden load, so it is necessary to reserve a large torque margin; and the closed loop stepping driver will collect the current position information every 50us, and according to the position error information adjusts the current, corrects the position, and prevents step loss. 2.High torque Ordinary stepping drive systems typically require a 30% torque margin to prevent lost step. Closed-loop stepping can use 100% of the motor torque to improve efficiency. Closed-loop stepping According to the position of the motor detected by the encoder, the magnitude and phase of the current are adjusted during overload, so that the torque of the motor at the current speed is kept to a maximum. 3.Stop without oscillation The traditional servo system is an error tracking system. When reaching the target position, the error is close to zero, the torque fluctuates in a certain range, causing the shaft to oscillate; and the closed-loop stepping system utilizes the low-speed large torque characteristics of the stepping motor when the motor reaches the target position. No oscillation will occur. This feature is suitable for visual inspection applications. 4.Fast response The characteristic of the stepping motor is that the rotor is synchronized with the given pulse to achieve fast positioning. Suitable for quick positioning of short distances. The position sampling speed of traditional servo systems is slow and there is a large settling time. 5.List of closed-loop stepping motor

Model of closed-loop stepping motor

Phase

Step angle (°)

Holding torque (NM)

Rated current (A)

Phase inductance (mH)

Phase resistance (Ohm)

Number

Rotor inertia (g.cm²)

Shaft diameter (mm)

Encoder resolution

Fuselage length L(mm)

42BG04-EC

2

1.8

0.48

2

2.9

1.35

4

77

5

1000

68

42BG06-EC

2

1.8

0.72

2

4

1.75

4

110

5

1000

80

57BG10-EC

2

1.8

1

2.8

1.2

0.8

4

260

8

1000

77

57BG20-EC

2

1.8

2

4

1.8

0.8

4

460

8

1000

98

60BG30-EC

2

1.8

3

5

1.8

0.45

4

690

8

1000

108

86BG40-EC

2

1.8

4

6

3.5

0.8

4

1400

14

1000

98

86BG80-EC

2

1.8

8

6

5.2

0.95

4

2800

14

1000

136

86BG120-EC

2

1.8

12

6

8.6

0.73

4

4000

14

1000

172