X67SM2436 B&R X67 Stepper Motor Module

Product Overview

The X67SM2436 (X67SM2436) is a high-performance stepper motor module from the B&R X67 system, designed for decentralized motion control applications. This module features two integrated full bridges, allowing for the precise control of two bipolar stepper motors directly from the I/O level. Engineered for direct machine mounting, the X67SM2436 eliminates the need for complex protective housing, making it ideal for distributed automation architectures in packaging, assembly, and CNC machinery. With comprehensive diagnostic LEDs for I/O status, supply voltage, and bus functionality, it provides maintenance personnel with immediate feedback on the health of the motion system, ensuring maximum uptime and simplified troubleshooting.

Technical Configuration

The module operates within a flexible nominal voltage range of 24 to 38.5 VDC, providing the torque and speed necessary for industrial-grade stepper applications. It incorporates two full bridges that support micro-stepping, ensuring smooth motor operation and high positioning accuracy. In addition to motor control, the X67SM2436 provides a sensor power supply (max. 0.96 W) and integrated digital inputs designed according to EN 61131-2 Type 1 standards. These inputs are configured as "Sink" circuits and can be utilized for limit switches, home sensors, or other process-related signals. The hardware is built for durability, weighing only 195 g while maintaining a ruggedized form factor capable of withstanding the mechanical stresses of on-machine installation.

Technical Specifications

Technical FAQs

Can the X67SM2436 control motors with different voltage requirements simultaneously?

The module uses a common power supply for the full bridges. While the two motors can be controlled independently in terms of motion profiles, they must both be compatible with the supply voltage (24 to 38.5 VDC) provided to the module.

What is the advantage of the integrated "Full Bridge" architecture?

The full bridge (H-bridge) design allows the module to reverse the current flow through the motor windings independently. This is essential for controlling the direction and phase of bipolar stepper motors, enabling high-torque performance and precise step-angle control.

Is it necessary to use a separate power supply for the motor and the logic?

While the module can operate from a shared 24 VDC source, it is common practice in motion control to separate the motor power (high current, potential noise) from the logic and bus power to prevent interference and ensure reliable communication.

Engineering & Installation Guide

Heat Dissipation and Mounting: Stepper motor drivers generate heat during high-torque holding and high-speed operation. Ensure the X67SM2436 is mounted on a thermally conductive surface (such as a machine frame) to facilitate heat dissipation. Avoid mounting the module in enclosed spaces without airflow if the motors are operating near the maximum current limit.

Cabling and EMI Mitigation: To prevent electromagnetic interference from affecting sensitive sensor inputs or the X2X Link bus, use shielded cables for the motor connections. The shield should be grounded 360 degrees at the module connector to provide a low-impedance path for high-frequency noise generated by the PWM switching of the full bridges.

Micro-stepping and Resonance: When configuring the motor parameters in B&R Automation Studio, utilize the micro-stepping features to minimize mechanical resonance. Stepper motors are prone to vibration at certain frequencies; fine-tuning the current control and step resolution via the X67SM2436 will result in quieter operation and smoother motion profiles.