ABB Bailey SMS01 Stepper Motor Module | 2.5A, 50,000 Steps/sec

Technical Specifications

Parameter	Value
Brand	ABB Bailey
Model	SMS01
Category	Stepper Motor Module
Weight	1.85 lbs (0.84 kg)
Dimensions	7.4 x 5.1 x 2.8 inches
Component Count	178 discrete components
Controlled Axes	1 stepper motor axis
Output Current	2.5A per phase maximum
Output Voltage	24-48V DC
Step Resolution	Full, half, quarter, eighth
Maximum Steps/sec	50,000 steps per second
Input Signals	Step, direction, enable
Feedback Interface	Optional encoder input
Protection Features	Overcurrent, overtemperature
Operating Voltage	24V DC logic, 24-48V DC motor
Current Draw	150 mA at 24V DC (logic)
Energy Storage	4 x 470µF, 2 x 100µF
Temperature Range	0°C to 50°C

Physical Construction and Component Layout

This SMS01 stepper motor module measures 7.4 inches in height. Its width reaches 5.1 inches with a depth of 2.8 inches. The total weight comes to approximately 1.85 pounds. Manufacturers placed 178 discrete components on this dedicated PCB. These components include power transistors, optocouplers, current controllers, and heat sinks. The module uses a four-layer design for noise reduction.

Output Specifications and Step Control

SMS01 controls one stepper motor axis with precision current regulation. Each phase delivers up to 2.5 amps of output current. The motor supply voltage ranges from 24V to 48V DC. Users can select full, half, quarter, or eighth step resolutions. Maximum step rate reaches 50,000 steps per second for smooth motion. The module accepts step, direction, and enable input signals. An optional encoder input provides position feedback capability. Therefore, this module drives a wide variety of stepper motors.

Protection Features and Energy Storage

The stepper module includes multiple protection mechanisms for reliability. Overcurrent protection shuts down outputs during motor faults. Overtemperature protection reduces current when the module runs hot. For energy storage, the module integrates four 470µF capacitors. Two additional 100µF capacitors filter high-frequency noise. These capacitors handle regenerative energy from motor deceleration. The SMS01 draws 150 milliamps for logic at 24V DC. The motor supply draws current according to load demands.

Application Use and System Integration

You will use this module in Bailey control systems with stepper motors. It suits positioning tables, conveyor indexing, and valve actuation. The SMS01 operates reliably from 0°C to 50°C ambient. Status LEDs indicate power, step activity, and fault conditions. For example, you can build precision motion control without external drives. Therefore, this stepper motor module provides integrated motion control for ABB Bailey automation.