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 » Stepper Drives » 115VAC input: SD17040C (4.0 Arms/5.7A peak)
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AMCI SD17040C Microstepping Stepper Motor Driver 4.0 Arms/5.7A peak

amci sd17040b microstepping stepper motor driver (6.3Arms/8.9A peak)

Microstepping Stepper Motor Driver - 4.0 Arms/5.7A peak (115VAC)


  • Powerful 4.0 Arms microstepping driver
  • Compact size (2.1"W x 4.0" D x 6.2"H)
  • Simple and easy set-up via onboard dip switches.
  • Switch selectable motor current, 1.0 - 4.0 Amps
  • (16) switch selectable microstep resolutions, up to 50,800 steps/rev.
  • Drives 4, 6, or 8 lead step motors, Nema sizes 23 - 42
  • Automatic idle current reduction, fully programmable.
  • Interlock safety feature & short circuit protection.
  • UL Listed


AMCI Model: #SD17040C

The SD17040C surpasses competing stepper drives with a host of features designed to simplify set-up, increase performance, and drive value.

AMCI's SD17040C was designed with you, the customer, in mind. Onboard dip switches simplify set-up & installation, eliminating the need for proprietary software & programming cables; plus field changes are a snap making it easy to reconfigure output current in 0.1A increments or microstepping resolution. Additionally, a selectable self-test feature is provided for troubleshooting your system. And because AMCI's SD17040C is an AC line-powered drive, you don't need a separate power supply, eliminating the cost and complexity of another component in your system. Plus, AMCI's SD17040C stepper drive is 100% compatible with all AMCI stepper controllers and motors, making it easy for you to specify a winning system.

The SD17040C's is an AC line-powered stepper drive, supplying motor current through a 170V bus. The drive's exceptional power combined with anti-resonance circuitry delivers the smoothest, most reliable performance possible in a stepper motor system. This driver also includes an automatic feature to lower motor current anytime the motor is left at rest for more than 1 second.

Configurable features such as microstepping resolution, automatic current reduction, and anti-resonance make it easy to maximize the SD17040C's performance for your application. Plus safety features include an interlock connection to prevent injury if the motor connector is removed while the driver is powered. Additionally, short circuit protection - including phase to phase and phase to ground- and overtemperature circuitry comes standard.

AMCI's SD17040C is a compact, but powerful AC powered 4.0 Arms microstepping motor driver designed with performance and longevity in mind. Reliability is guaranteed. The SD17040C is purpose built for demanding applications, starting with board-level components rated to 105°C (221°F) letting you take full advantage of the drive's compact size.

Unlike most industrial stepper drives with electronics rated to 85°C (185°F), AMCI's SD17040C unit can be installed into tight spaces without thermal issues; supplemental fans or cooling aids are NOT required...AMCI's SD17040C runs cool by design. Plus, you can choose optional panel or side mounting for added flexibility during installation.

Using DSP (Digital Signal Processor) technology enables the SD17040C's sleek, space saving design compared with other drives that rely on bulky, analog-based circuitry. The DSP technology also makes it possible for AMCI to customize the drive's performance. Custom microstepping resolutions or preset motion profiles can be configured without undergoing a product redesign, enabling AMCI to offer unique solutions at competitive prices for volume orders.

AMCI's SD17040C microstepping motor driver delivers unparalleled value, performance, and reliability. Request a quote from AMCI today on this best-in-class stepper driver, priced for a wide variety of applications.


Microstepping Stepper Motor Driver - 4.0 Arms/5.7A peak (115VAC)

Amplifier type:
Bipolar with two MOSFET H-bridges; average current control, 20 kHz PWM

Number of phases:
(2) two
Supply voltage:
95-132 Vac, 50/60 Hz

Indexer / Disable Input Specifications:

Off State Voltage: 0 to 1Vdc
On State Voltage: 3.5 to 27Vdc
Input Requires 10mA of current to operate

Fault output voltage:
open collector/emitter 30Vdc max & 20 mA max


Microstepping Stepper Motor Driver - 4.0 Arms/5.7A peak (115VAC)

Current rating:
4.0 Arms (average current) / 5.7A peak (peak current)

NOTE: There are 2 ways to express the magnitude of current in microstepping stepper motor drivers, RMS and Peak.

1 amp RMS = 1.414 amp Peak.

AMCI's SD17040C stepper motor drive is rated for 4.0 amp RMS or 5.7 amp Peak.

RMS vs Peak Current - more info »

16 dipswitch selectable steps/rev: 200, 400, 1000, 2000, 5000, 10,000, 12,800, 18,000, 20,000, 21,600, 25,000, 25,400, 25,600, 36,000, 50,000, and 50,800. Switch settings are latchable and changes occur when power is cycled

Maximum velocity:
motor/load dependent
Maximum input frequency:
Output current:
1.0A - 4.0A rms selectable with latchable dipswitches in 0.1 amp increments
Maximum operating temperature:
50°C ambient temperature

Idle current:
Four latchable dipswitch selectable options:
- 0% after 1 second without a step pulse
- 50% after 1 second without a step pulse
- 69% after 10ms without a step pulse
- no reduction

Motor connections:
eight lead series or parallel, six lead series or center tapped, or four lead motors


AMCI SD17040C will work with any stepper motor controller/indexer that generates a step and direction pulse.

SLC500: Allen-Bradley 1746-HSTP1 Stepper Controller for SLC500.
Below are the various Stepper Control Solutions that AMCI offers:

stepper motor controller - controllogixControlLogix: AMCI 3200 series stepper motor controller for Allen Bradley ControlLogix PLC

stepper motor controller - compactlogixCompactLogix: AMCI 3601 stepper motor controller for Allen Bradley CompactLogix PLC
stepper motor controller - micrologixMicroLogix: AMCI 3601 stepper motor controller for Allen Bradley MicroLogix PLC
stepper motor controller - point i/oPoint I/O: AMCI 3401 series stepper motor controller for Allen Bradley Point I/O

stepper motor controller - network ready nexusNetworks: AMCI NEXUS multi-axis stepper motor controller for industrial networks: ControlNet, EtherNet IP, DeviceNet,Profibus, and Modbus TCP/IP
See additional stepper motor drives by AMCI:
SD7540A | SD17040B | SD17060B | SD17080 | SD17098i | SD31060i


Microstepping Stepper Motor Driver - 4.0 Arms/5.7A peak (115VAC)

Underwriters Laboratories Inc. Listed:



AMCI Microstepping Stepper Motor Driver - 4.0 Arms/5.7A peak (115VAC) Ordering Guide

AMCI makes buying Stepper Drives easy...our sales office will help you:

  • Select the right Stepper Driver for your application
  • Pay by credit card using your Visa, Mastercard, Discover, or American Express
  • Coordinate alternative payment methods (P.O., wire transfers, etc.)
  • Locate a distributor convenient to your region of the country

Contact AMCI Sales today:

telephone: 860-585-1254