Closed Loop Stepper Motors


AZ Series Closed Loop, Absolute Encoder Stepper Motors

Closed Loop, Absolute Encoder Stepper Motors - AZ Series

The AZ Series stepper motors offer high efficiency, low vibration and incorporates our newly developed Mechanical Absolute Encoder for absolute-type positioning without battery back-up or external sensors to buy. Closed loop performance without hunting or gain tuning. Available with a built-in controller or pulse input driver which substantially reduces heat generation from the motor through the use of high-efficiency technology. Requires AZ Series Driver.

  • Battery-Free, Mechanical Absolute Encoder
  • Closed Loop Performance, No Hunting or Gain Tuning
  • AC or DC Input Types
  • Wide Range of Gear Types for Inertia Matching & Higher Torque
  • Electromagnetic Brake Type Available
  • AZ Series Driver Required*

AR Series Closed Loop Stepper Motors

Closed Loop Stepper Motors - AR Series

The AR Series stepper motors offer high efficiency, low vibration, continuous operation with the security of closed loop performance without hunting or gain tuning. Available with a built-in controller or pulse input driver, the system substantially reduces heat generation from the stepper motor through the use of high-efficiency technology. The AR Series also achieves up to 40% less power consumption, improved angle accuracy and is capable of driving large inertia loads. For use with AR Series Drivers.

  • High-Efficiency, Continuous Operation
  • Closed Loop Performance, No Hunting or Gain Tuning
  • AC or DC Input Types
  • Wide Range of Gear Types for Inertia Matching & Higher Torque
  • Electromagnetic Brake Types
  • AR Series Driver Required*


Closed Loop Performance

Closed Loop Rotor Position Sensor

These stepper motors use our AlphaStep closed loop technology to maintain positioning operation even during abrupt load fluctuations and accelerations without hunting or gain tuning. The rotor position detection sensor monitors the rotation speed and amount. When an overload condition is detected, it will instantaneously regain control using the closed loop mode. When an overload condition continues it will output an alarm signal, thereby providing reliability.

Closed Loop Control


No Hunting

Since these are stepper motors, there is no hunting problem. Therefore, when the motor stops, its position is completely stable and does not fluctuate. Closed Loop stepper motors are ideal for applications in which vibration would be a problem.

No Hunting

High Response

Like conventional stepper motors, closed loop stepper motors operate in synchronism with command pulses. This makes short stroke positioning possible in a short amount of time.

High Response


No Gain Tuning

Gain tuning for servo motors is critical, troublesome and time-consuming. Since these are stepper motors, there are no gain tuning requirements. Low rigidity applications, such as a belt and pulley system, are ideal for closed loop stepper motors.

No Gain Tuning


Stepper Motor Comparison

Product Series

AZ Series Closed Loop, Absolute Stepper Motors

AR Series Closed Loop Stepper Motors

Closed Loop Absolute Stepper Motors

 

Closed Loop Stepper Motors

 

Feedback Type

Mechanical Absolute
Encoder

Resolver

Basic Step Angle

0.36°

0.36°

Driver Power Input

AC or DC

AC or DC

Frame Sizes

1.65 in. (42 mm) NEMA 17
2.36 in. (60 mm) NEMA 24

1.10 in. (28 mm) NEMA 11
1.65 in. (42 mm) NEMA 17
2.36 in. (60 mm) NEMA 24
3.35/3.54 in. (85/90 mm) NEMA 34

Available Options

Geared Type
Electromagnetic Brake

Geared Type
Electromagnetic Brake

Max. Holding Torque

42 oz-in up to 88 lb-in

42 oz-in up to 320 lb-in

0.3 N·m up to 10 N·m

0.3 N·m up to 37 N·m

Learn More

AZ Series Closed Loop, Absolute Stepper Motors

AR Series Closed Loop Stepper Motors

Order Brochure

AZ Series Brochure

 

Stepper Motor Videos

Closed Loop Demo #1

Closed Loop Demo #2

AZ Series - Easy Home Setting

AZ Series - Restarting Demo

Stepper Motor Technical Articles



 

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Order the AZ Series Brochure

AZ Series Brochure