X67SM2436 B & R Automation
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The X67SM2436 is a stepper motor module from B & R Automation, part of the X67 Analog Input Output Modules series. It supports two channels for 2-phase bipolar stepper motors with a nominal current of 3 Amps and a step resolution of 256 microsteps per full step. This module offers 6 Type 1 digital inputs, features an IP67 protection rating, and has a maximum module current of 8 Amps.
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Product Description:
The X67SM2436 is a field-mounted motion and I/O module produced by B & R Automation for the X67 Analog Input Output Modules series. As an integrated stepper drive, it supports decentralized control of two axes while also capturing local sensor states, so machine builders can place control functions directly on moving tooling and keep cabinet space free. The device integrates seamlessly with B & R controllers through the deterministic X2X real-time bus, allowing cycle-synchronous commands without additional gateways. This arrangement shortens motor and sensor cable runs near the point of use, which helps keep distributed motion sections compact and reduces the amount of hardware concentrated in the main cabinet.
The internal controller switches at 38.5 kHz, giving short current regulation cycles that reduce audible noise and improve torque linearity. Incremental encoder signals are evaluated in 4× mode, and each edge is tallied by a 16-bit counter that rolls over only after 65,536 steps. The module offers 6 digital inputs that conform to Type 1 requirements, and an input circuit wired as sink allows direct connection of PNP sensors. Galvanic isolation is verified to 500 Veff, preventing ground faults between logic and power domains. A molded housing with sealed M12 connectors provides IP67 protection, and the electronics require only 0.75 W from the X2X link. This combination lets the module handle local sensing while remaining suitable for exposed mounting positions on the machine.
On the power side, an internal DC link with 200 µF of capacitance smooths the supply and supports rapid current changes. The module contains two motor channels that can source up to 8 A of peak phase current to a 2-phase bipolar stepper motor driven by a full-bridge stage. Continuous operation is typically limited to 3 A per channel to match winding ratings and manage heat. Motion smoothness is enhanced by a programmable resolution of 256 microsteps/full step. Despite these drive capabilities, the housing weighs only 195 g, which is advantageous on moving gantries. Each motor channel can serve its own axis, which supports coordinated motion tasks without placing separate stepper amplifiers elsewhere in the system.
Frequently Asked Questions about X67SM2436:
Q: How many motor channels does the X67SM2436 module support?
A: The X67SM2436 can control up to two 2-phase bipolar stepper motors using its dedicated motor channels.
Q: What is the maximum current supported by the X67SM2436 module?
A: The maximum module current for the X67SM2436 is 8 A, allowing for high current applications.
Q: What is the step resolution offered by the X67SM2436 module?
A: This module has a step resolution of 256 microsteps per full step, providing precise motor positioning.
Q: What degree of protection does the X67SM2436 module provide?
A: The degree of protection for the X67SM2436 is IP67, making it suitable for environments where dust and temporary water immersion resistance is needed.
Q: How many digital inputs are available on the X67SM2436 and what type are they?
A: It features six digital inputs of Type 1, enabling direct connection to compatible industrial sensors.
