Communication Module 1769-SM2 Allen-Bradley

Availability: 99 left in stock

Product Overview The 1769-SM2 is a high-performance serial communication module for bridging 1769-based controllers with PowerFlex AC drives. Supporting both...

SKU: 1769-SM2

Manufacturer: Allen Bradley
Product No.: 1769-SM2
Product Type: Communication Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 170g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The 1769-SM2 is a high-performance serial communication module for bridging 1769-based controllers with PowerFlex AC drives. Supporting both Drive Serial Interface (DSI) and Modbus RTU protocols, it enables control of up to five drives per module in multi-drive mode. This module is essential for machine builders using MicroLogix 1500 or CompactLogix systems who require drive parameter monitoring and control over a serial network without occupying additional network nodes.

Technical Specifications

Item	Specification
Module Type	1769-SM2 Communication Module
Protocol Support	Drive Serial Interface (DSI), Modbus RTU
Drive Compatibility	PowerFlex 4-class (4, 40, 400), PowerFlex 7-class (via 20-HIM-H-RS485-HVAC adapter)
Backplane Current Draw	350 mA @ 5.1 V DC; 0 mA @ 24 V DC
Power Supply Distance Rating	4 slots from 1769 power supply
DSI Communication Speed	19.2 kbps fixed
Modbus RTU Speeds	300–38400 bps
Operating Modes	Single-drive or Multi-drive (up to 5 drives)
Channel Configuration	3 independent serial channels
Operating Temperature	-10 to 50 °C (14 to 122 °F)
Weight	0.17 kg

Network and Integration Capabilities

The 1769-SM2 converts Logix backplane data into serial packets for DSI or Modbus RTU communication. In multi-drive mode, it reduces hardware footprint by consolidating multiple PowerFlex units into a single slot.

MicroLogix 1500: Functions as a local expansion module.
CompactLogix: Usable in local chassis or remote 1769 I/O assemblies.
Parameter Access: Full access to drive parameters for real-time monitoring and configuration via RSLogix 500 or Studio 5000.

Installation Guidelines

Place the module within four slots of the system power supply to maintain 5 V DC bus integrity.
Use shielded twisted-pair cabling for all DSI and Modbus connections to minimize EMI in motor control environments.

Common Technical Questions

Can the 1769-SM2 control PowerFlex 525 drives?
Yes, it can communicate via DSI, though modern applications typically use 1769-LxxER controllers' Ethernet ports for improved performance.

Does this module support Modbus TCP?
No. The 1769-SM2 is serial-only. For Modbus TCP, use a CompactLogix 5370 Ethernet port with Open Sockets or a third-party gateway.

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