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STM23R Series Integrated Stepper Motors

The STM23R Integrated Motor is a cost effective, high performance, motor with the drive built in. It is based on advanced digital current control technology, and features high torque, low noise, and low vibration. Operational parameters are switch selectable.
● Anti-Resonance
● Torque Ripple Smoothing
● Microstep Emulation
● Stall Detection and Stall Prevention
● Dynamic Current Control
● Command Signal Smoothing
Brand Name: MOONS'
Price: USD  179.0  -  272.0  EA

* Free shipping to North America and most of Europe for orders of $100 or more

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■ Description

The STM-R is an integrated Drive+Motor, fusing step motor and drive technologies into a single device, offering savings on space, wiring and cost over conventional motor and drive solutions. STM-R offers NEMA 17, and 23 two frame sizes.
STM23R Series Integrated Stepper Motors

■ Features

Step motor systems have a natural tendency to resonate at certain speeds.The SR drives auaomatically calculate the system’s natural frequency and apply damping to the control algorithm. This greatly improves midrange stability, allows higher speeds and greater torque utilization, and also improves settling times.Provides better motor performance and higher speeds
Microstep Emulation
Microstep Emulation With Microstep Emulation, low resolution systems can still provide smooth motion. The drive can take low resolution step pulses and create fine resolution motion. Delivers smoother motion in any application
Microstep Emulation
Torque Ripple Smoothing
Torque Ripple Smoothing
All step motors have an inherent low speed torque ripple that can affect the motion profile of the motor. By analyzing this torque ripple the system can apply a negative harmonic to counter this effect. This gives the motor much smoother motion at low speed.
Command Signal Smoothing
Command Signal smoothing can soften the effect of immediate changes in velocity and direction, making the motion of the motor less jerky. An added advantage is that it can reduce the wear on mechanical components. Improves smoother system performance
Command Signal Smoothing
Self Test & Auto Setup
At start-up the drive measures motor parameters, including the resistance and inductance, then uses this information to optimize the system performance.

■ Model Numbering System

Model Numbering System of STM23R Series Integrated Stepper Motors

■ Ordering Information

Model Torque Standard Double Shaft External Enconder
STM23R-2 0.9N·m    
STM23R-3 1.5N·m    

Power Amplifier
 Amplifier Type   Dual H-bridge, 4 quadrant
 Current Control   4 state PWM at 16 kHz
 Power Supply   STM17R: External 12 - 48 volt power supply required
  STM23R: External 12 - 70 volt power supply required
 Input Voltage Range   STM17R: 10 - 52 volts min/max (nominal 12 - 48 volts)
  STM23: 10 - 75 volts min/max (nominal 12 - 70 volts)
 Protection   Over-voltage, under-voltage, over-temp, internal shorts (phase-to-phase, phase-to-ground)
 Idle Current Reduction   Switch selectable for reduction to 50% or 90% of running current
 Ambient Temperature   0 - 40°C (32 - 104°F) when mounted to a suitable heat sink
 Humidity   90% non-condensing
 Current Control   Advanced digital current control provides excellent high speed torque
 Speed Range   Speeds up to 3000 rpm
 Auto Setup   Measures motor parameters to configure current control and anti-resonance gain settings
 Encoder Feedback   Optional 1000 line external encoder, A/B/Z Differential Output
 Step Input STEP+/-   Inputs: optically isolated, 5 - 24 volts, min. pulse width 250 ns., max. pulse frequency 2 MHz;
  Motor executes one step on the falling edge of the STEP input signal
 Direction Input DIR+/-   Inputs: optically isolated, 5 - 24 volts, min. pulse width 250 ns, max. pulse frequency 2 MHz;
  Direction of rotation is controlled by the DIR input state
 Enable Input EN+/-   Inputs: optically isolated, 5 - 24 volts, min. pulse width 100 us., max. pulse frequency 10 KHz;
  Enables or disables the drive amplifier
 Output OUT+/-   Open Collector, 30 volts, 100 mA max, max. pulse frequency 10 KHz; closes when the drive encounters an error,
  Open when the drive is operating normally
Switch Selections

 Running current   Output current is set by SW1 & SW2 with a total of 4 settings: 50%, 70%, 90% and 100% of the running current.
 Idle Current   Can be set by SW3 for 50% of running value to reduce motor and drive heating, or for 90% when a high holding torque is required.
 Self test   Set by SW4 to check the physical operation of the motor.
 Input Noise Filter   Set by SW5 this filters out unwanted electrical noise. The frequency of the filter can be set to 150KHz or 2MHz.
 Step Smoothing Filter   Also called microstep emulation, smooth motion can be obtained from coarse command signals by setting SW6 to ON.
  Setting SW7 for the proper inertia load, low (OFF) or high (ON), can greatly improve the motor’s performance.
 Step Pulse Type   SW8 allows the motor to be used with either CW/CCW pulse type command signals (ON), or STEP/DIR pulse type signals (OFF).
 Microstep resolution   SW9, SW10, SW11, and SW12 set the microstep resolution at one of 16 settings:
   200, 400, 800, 1600, 3200, 6400, 12800, 25600, 1000, 2000, 4000, 5000, 8000, 10000, 20000, or 25000 steps/rev.
 Mass   STM17R-1□: 280 g
  STM17R-2□: 360 g
  STM17R-3□: 440 g
  STM23R-2□: 850 g
  STM23R-3□: 1200 g
 Rotor Inertia   STM17R-1□: 38 g•cm2
  STM17R-2□: 57 g•cm2
  STM17R-3□: 82 g•cm2
  STM23R-2□: 260 g•cm2
  STM23R-3□: 460 g•cm2

Compare Item Price
Buy Now
STM23R-2 $179.00
STM23R-2D $179.00
STM23R-2E $268.00
STM23R-3 $190.00
STM23R-3D $190.00
STM23R-3E $272.00

STM23R-2 torque speed curve
STM23R-3 torque speed curve

■ Dimensions (Unit: mm)

Dimensions of STM23R Series Integrated Stepper Motors

2D Drawings
3D Model
Title Type Size(KB) Download
STM23R-3_3D Model.step STEP 13738
STM23R-2_3D Model.step STEP 13651
Title Type Size(KB) Download
STM Family Brochure.PDF PDF 1822
User Manual
Title Type Size(KB) Download
STM23R Series_User Manual.pdf PDF 3646
Title Type Size(KB) Download
STM23R Series_Specifications.pdf PDF 995
Title Type Size(KB) Download
Stepper Products General Catalog_20180531.pdf PDF 27992
Quick Start
Title Type Size(KB) Download
STM23R Series_Quick start.pdf PDF 704
Title Type Size(KB) Download
ROHS declaration-2024-A0.pdf PDF 522

Delivery & Packaging

Logistics tracking

Ensure your ordered products are always safely packaged from easy click to fast delivery to your hands

Professional Product Label

Considering all possible harsh application environments, MOONS' specially designed labels for each product, which pass water-resistance test, durability rub test, high temperature resistance and corrosion resistance tests.

Besides, our product labels are attached with QR code linking to product details, which is convenient for clients to view the detail product page with their mobile phones.

Note: This label design is suitable for products of stepper motor.

(Professional packing box and unique appearance design)

(Single item packed with EPE)

(Multi-products packed with another box)

Safely Packaging

In order to ensure your shipments withstand the long trip and arrive safely and intact, MOONS' specially designed Individual package to pass the drop test with its stable structure.
Besides,the package is made from recyclable materials, providing you with professional safety delivery.
Whether just single item or multi-products the clients buy, all products are packed twice to avoid the damage further.

Shipping Visualization

For each case, products are carefully packed by experienced warehouse staff and the key processes are recorded by photos, which are then posted on our website, so that clients could clearly know the packing process and logistics status after placing order.

(Product in the box)

(Add the invoice)

(Label the commodity)

(The logistics waybill attached)

Fast Delivery

Fast Cross-Border Delivery
MOONS' chooses DHL as our main international express shipping partner. As the world's leading logistics specialist, DHL provides our customers with fast and professional inter- national door-to-door delivery service.
Estimated Delivery Time: e.g. China-USA major cities 3 business days.

Warehouse Management

MOONS’ has an experienced warehouse management team, all products and materials are clearly classified and neatly arranged.