1769-SM1 CompactLogix DPI SCANport Module Allen-Bradley

Product Overview

The Allen-Bradley 1769-SM1 is a Compact I/O-to-DPI/SCANport communication interface module designed for CompactLogix and MicroLogix 1500 PLC platforms. It establishes direct, high-speed digital communications between 1769 controller backplanes and Allen-Bradley PowerFlex 7-Class drives or legacy SCANport host devices. Operating as an expansion I/O card, the 1769-SM1 automatically detects connected host protocol types and configures data rates (125 kbps or 500 kbps) via autobaud capabilities.

Engineered for industrial drive control architectures, the card draws 280 mA at 5 Vdc directly from the Compact I/O chassis power supply, while each communication channel consumes 60 mA at 12 Vdc supplied by the DPI/SCANport host. Featuring a power supply distance rating of 6, it installs within six module slots of a 1769 power supply to ensure reliable backplane data transfer and signal integrity across process lines.

Key Features and Benefits

• Dual Protocol Autobauding: Automatically senses DPI or SCANport device connections and locks onto 125 kbps or 500 kbps transmission rates.
• Broad Controller Compatibility: Integrates seamlessly into CompactLogix and MicroLogix 1500 controller expansion racks.
• Direct PowerFlex Drive Interfacing: Communicates natively with PowerFlex 7-Class AC drives and legacy SCANport variable frequency drives.
• Extended Cable Range Support: Supports cable distances up to 100 meters (328 ft) at 125 kbps DPI data rates (10 meters for SCANport).
• Compact Hardware Footprint: Standard 35 mm wide single-slot module design optimizes panel layout space.
• High Mechanical Shock Resistance: Operational shock rating of 30g at 11 ms protects internal surface-mount circuitry during machine vibration.

Technical Specifications

Detailed electrical, mechanical, and environmental parameters for the Allen-Bradley 1769-SM1 are structured below:

Target Equipment and Application Scenarios

• Centralized PLC control of PowerFlex 7-Class AC drives across automated conveyor systems.
• Retrofitting legacy SCANport variable frequency drives into modern CompactLogix controller networks.
• Remote motor control centers (MCC) utilizing MicroLogix 1500 expansion racks for distributed drive management.
• Pumping stations and air handling units requiring high-speed drive status feedback and command logic.

Diagnostic Capabilities and Network Diagnostics

The Allen-Bradley 1769-SM1 delivers real-time drive diagnostics by bridging parameter tables from PowerFlex drives directly into Logix controller tag databases. Field technicians can monitor drive operational state, output frequency, fault codes, and bus voltage remotely without opening drive enclosure doors. Front-panel status indicators quickly verify channel communication health and autobaud synchronization during commissioning.

Global PLC Spare HUB's Insight & Field Experience

Note that while the product user manual headline may reference generic distance rules, the actual hardware power supply distance rating for the 1769-SM1 is strictly 6. Installing this card more than 6 module slots away from the 1769 power supply causes backplane 5 Vdc voltage drops, resulting in intermittent communication loss or backplane fault trips under heavy load.

Always verify atmospheric conditions before installation. The unit contains sensitive communication transceivers that must not be exposed to volatile gases, corrosive vapors, or conductive airborne dust. In corrosive environments, install the controller assembly inside an NEMA/IP rated sealed enclosure with appropriate environmental air filtering.

Compliance, Shipping, and Warranty Terms

• Package Contents: 1 x New factory-sealed Allen-Bradley 1769-SM1 communication module in original protective box.
• Warranty Coverage: Backed by a full 12-month factory replacement warranty active from the dispatch date.
• Express Global Courier: Fast international shipping within 24–48 hours using express DHL, FedEx, and UPS courier networks.

Frequently Asked Questions (FAQ)

Question: What is the maximum physical slot distance allowed between this card and the chassis power supply?

Answer: The card must be placed within 6 slot positions of the 1769 system power supply module to guarantee stable voltage supply.

Question: Does this communication interface require manual dip switch configuration to set data rates?

Answer: No, the card features built-in autobaud functionality that automatically detects host baud rates (125 kbps or 500 kbps).

Question: What cable distance limits apply when connecting a DPI host at 125 kbps?

Answer: At a 125 kbps DPI data rate, the maximum recommended cable length extends up to 100 meters (328 feet).

Question: How does the module derive operational power for its communication channels?

Answer: Communication channels draw 60 mA at 12 Vdc directly from the connected DPI or SCANport host drive, while module logic draws 280 mA at 5 Vdc from the 1769 backplane.

Question: What storage precautions should be taken if the card is not installed immediately upon delivery?

Answer: Store the unit in its sealed antistatic packaging within a temperature range of -40 °C to +85 °C in an atmosphere free from corrosive vapors and airborne dust.

Tags