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STAC Series Two Phase AC Stepper Motor Drives

The ST series integrate motion control capability that support stand-alone programming and various bus control as RS-232/485, Ethernet UDP/TCP, CANopen and EtherNet/IP
● Anti-Resonance
● Microstep Emulation
● Torque Ripple Smoothing
● Stall detection & Stall prevention
Brand Name: MOONS'
Price: USD  710.0  -  726.0  EA

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

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■ Description

The STAC series are AC input high performance digital stepper drives with multiple control options and many sophisticated features. The STAC series support stand alone programming and various bus control as RS-232/485, Ethernet UDP/TCP, CANopen and EtherNet/IP.

■ Features

Anti-ResonanceStep motor systems have a natural tendency to resonate at certain speeds.The SR drives automatically 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 EmulationWith 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 SmoothingAll 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.
Produces smoother motion at low speeds
Command Signal SmoothingCommand 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
Auto Setup & Self TestAt start-up the drive measures motor parameters, including the resistance and inductance,then uses this information to optimize system performance. The drive can also detect open and short circuits.

■ Control Options

Control Options

■ Model Numbering System

Model Numbering System of STAC Series Two Phase AC Stepper Motor Drives

■ Order Information

Model Control Current Voltage Encoder RS-232 RS-485 Modbus/RTU Ethernet Ethernet/IP I/O
MSSTAC5-Q-AE-2V Q 0.5-2.55A 94-265VAC        
MSSTAC5-Q-RE-2V Q 0.5-2.55A 94-265VAC        
MSSTAC5-IP-E-2V IP 0.5-2.55A 94-265VAC      

Power Amplifier
Amplifier Type Dual H-Bridge, 4 Quadrant
Current Control 4 state PWM at 16 KHz
Output Torque 0.5-2.55A/Phase(peak of sine) in increments of 0.01A
Input Voltage Signal Phase 94-265VAC
Protection Over-voltage, under-voltage, over-temp, internal motor shorts (phase-to-phase, phase-to-ground)
Regeneration Built-in regeneration circuit, 10 watts max.
Idle Current Automatic idle current reduction to reduce heat after motor stops moving,  software selectable current and idle delay
Microstep  Resolution Software selectable from 200 to 51200 steps/rev in increments of 2 steps/rev
Microstep Emulation Switch selectable microstep emulation provides smoother, more reliable motion
Anti-Resonance Raises the system-damping ratio to eliminate midrange instability and allow stable operation   throughout the speed range of the motor, dip switch selectable load inertia
Torque Ripple Smoothing Allows for fine adjustment of phase current waveform harmonic content to reduce low-speed torque ripple in the range of 0.25 to 1.5 rps
Encoder Feedback Optional encoder feedback for stall detection and stall prevention
NonVolatile Storage Configurations are saved in FLASH memory on-board the DSP
Humidity 90% non-condensing
Ambient  Temperature 0 - 40°C when mounted to a suitable heat sink
Mass Approx. 0.68Kg
All models X1, X2 inputs: Optically isolated, differential, 5-24 VDC, minimum pulse width = 250 ns, maximum  pulse frequency = 2 MHz
X3, X4 inputs: Optically isolated, differential, 5-24 VDC
Y1, Y2 outputs: Optical darlington, sinking or sourcing, 30 VDC max, 100 mA max
Analog input: Single-ended. Range is software selectable 0-5, +/-5, 0-10, or +/-10 VDC. Software configurable offset, deadband and filtering.
Resolution is 12 bits (+/- 10 volt range), 11 bits (+/-5 or 1-10 volt range) or 10 bits (0-5 volt range).
Expanded I/O -Q-A models have the same I/O as above plus the following:
IN1, IN2, IN7, IN8 inputs: Optically isolated, differential, 5-24 VDC logic (2.5V switching threshold),
100 usec minimum pulse width, maximum current = 10 mA.
IN3-IN6 inputs: Optically isolated, single-ended, shared common, sinking or sourcing,
12-24 VDC logic, 2200 ohms, maximum current = 10 mA.
OUT1-OUT3 outputs: Optical darlington, single-ended, shared, sinking, 30VDC max, 100 mA max,
voltage drop = 1.2V max at 100 mA.
OUT4 output: Optical darlington, sinking or sourcing, 30 VDC max, 100 mA max, voltage drop = 1.2V max at 100 mA.

Compare Item Price
Buy Now
MSSTAC5-Q-AE-2V $726.00
MSSTAC5-Q-RE-2V $726.00
MSSTAC5-IP-E-2V $710.00

  • AM23HS2459 torque speed curve
  • AM23HS3466 torque speed curve
  • AM24HS5411 torque speed curve
  • AM34HC0306 torque speed curve
  • AM34HD0802 torque speed curve
  • AM34HD1802 torque speed curve
  • AM34HD2805 torque speed curve
  • AM34HD4802 torque speed curve
  • AM34HD6801 torque speed curve

■ Dimension (Units: mm)

Dimension of STAC Series Two Phase AC Stepper Motor Drives

■ Connector PIN Out

■ SMSSTAC5-Ethernet

2D Drawings
Title Type Size(KB) Download
MSSTAC5-IP_2D Drawing.pdf PDF 31
MSSTAC5-IP_2D Drawing.DWG DWG 381
MSST5_10-Q_C_IP 2D.pdf PDF 281
3D Model
Title Type Size(KB) Download
MSSTAC5-IP_3D Model.step STEP 5126
Title Type Size(KB) Download
MSSTAC5_Brochure.pdf PDF 2482
User Manual
Title Type Size(KB) Download
Modbus RTU Manual_EN20171018.pdf PDF 1470
HOST COMMAND reference uesr manual.pdf PDF 6963
MSSTAC5-IP_User Manual.pdf PDF 3217
Title Type Size(KB) Download
MSSTAC5-IP_Specification.pdf PDF 651
Title Type Size(KB) Download
Stepper Products General Catalog_20180531.pdf PDF 27992
Quick Start
Title Type Size(KB) Download
MSSTAC5-IP_Quick Start.pdf PDF 746
Title Type Size(KB) Download
ROHS declaration-2024-A0.pdf PDF 522
CE Certification for ST.STAC.pdf PDF 119

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.