Allen-Bradley 1769-SM1 is a dedicated single-slot DPI/SCANport communication module for 1769 CompactLogix automation systems. Unlike fieldbus-based communication modules such as 1769-SDN (DeviceNet), the SM1 is professionally designed for direct high-speed connection with AllenBradley PowerFlex series drives. It enables seamless realtime data exchange, parameter configuration and fault diagnosis between PLC and inverters, serving as the most cost-effective direct drive communication solution for stand-alone and multi-drive control systems.

Core Technical Parameter Specifications

Module Type：1769 Compact I/O DPI/SCANport dedicated drive communication module

Supported Protocol：DPI (Drive Peripheral Interface) / SCANport dual universal protocol

Compatible Devices：Full PowerFlex series AC/DC drives, including 4, 70, 700, 525, 750 series

Communication Mode：Auto baud rate detection & automatic protocol identification

Data Transmission：Support implicit I/O messaging & explicit messaging dual modes

Backplane Current Draw：225mA @ 5VDC standard low power consumption

Max Heat Dissipation：4.9W full-load stable power dissipation

Installation Requirement：Must be installed within 6 slots of the power supply module

Status Diagnosis：Multi LED indicators for module, link, communication and fault status

Mounting Method：Standard DIN rail and panel dual mounting structure

Operating Temperature：0℃ ~ +60℃ continuous industrial operation

Certifications：UL, CSA, CE, Class I Div 2 hazardous location certification

DPI/SCANport Auto-Detect & Direct Drive Link Advantage

The core feature of 1769-SM1 is its exclusive direct drive communication architecture. It eliminates the need for intermediate network gateways or DeviceNet adapters, allowing CompactLogix PLCs to directly communicate with PowerFlex inverters via native DPI/SCANport ports. The built-in automatic protocol recognition and baud rate adaptation function greatly simplifies on-site debugging, realizing plug-and-play communication connection without manual parameter matching.

Supporting dual communication modes, the module meets diverse drive control demands: implicit I/O messaging ensures high-speed cyclic real-time control of start/stop, frequency regulation and speed feedback; explicit messaging realizes remote parameter modification, batch configuration and detailed fault code reading. It stably transmits operating current, voltage, temperature, running status and alarm information of the drive, achieving full closed-loop monitoring and control of variable frequency systems.

Cost-Effective Drive Networking & System Compatibility

AllenBradley 1769-SM1 features full compatibility with all 1769 Compact I/O racks and CompactLogix L2x/L3x series controllers. For single or small-quantity PowerFlex drive control scenarios, it avoids the high-cost configuration of DeviceNet network architecture represented by 1769-SDN modules, greatly reducing overall system construction and wiring costs while retaining complete drive control functions.

It supports configuration and diagnosis through Studio 5000, RSNetWorx and DriveExplorer software, facilitating rapid project deployment and daily equipment maintenance. The compact single-slot design saves cabinet space, and the industrial-grade anti-interference structure ensures stable communication in motor operation and high-frequency switching environments. It is perfectly suitable for legacy drive system renovation and incremental upgrade of small and medium-sized variable frequency control projects.

Industrial Application Scenarios

AllenBradley 1769-SM1 is widely deployed in industrial automation scenarios requiring PowerFlex inverter direct control, including packaging machine frequency conversion regulation, conveyor line speed synchronization control, fan and water pump energy-saving variable frequency systems, small process equipment drive control and retrofitting of old AB drive control systems.

North American equipment OEMs adopt SM1 for cost-effective drive communication design, simplifying system architecture. Latin American industrial renovation projects deploy the module to replace aging communication adapters and stabilize drive data transmission. European lightweight automation projects rely on its fast response and low failure rate to improve the operational stability of variable frequency production lines.