Allen-Bradley 1203-SG2 SCANport Expander Module

The Allen-Bradley 1203-SG2 is a SCANport Expander Module designed to extend the connectivity of Allen-Bradley PowerFlex® variable frequency drives (VFDs) that use the SCANport communication protocol.

Key Features of the 1203-SG2 SCANport Expander:

✔ SCANport Expansion – Allows multiple devices (e.g., HIMs, PLCs, drives) to share a single SCANport network.

✔ Compatibility – Works with PowerFlex 4, 40, 400, 700, and 700S drives (with SCANport support).

✔ Isolation & Signal Boosting – Helps prevent signal degradation in long cable runs.

✔ DIN-Rail Mountable – Easy installation in control panels.

✔ LED Indicators – Shows communication status (active/fault).

Typical Applications:

Multi-drive systems where multiple PowerFlex drives need SCANport communication.

Extended-distance SCANport networks (helps maintain signal integrity).

Integration with Allen-Bradley PLCs (e.g., SLC 500, CompactLogix over DeviceNet).

How It Works:

Connect the 1203-SG2 between a master device (PLC/HIM) and PowerFlex drives.

Distributes SCANport signals to multiple drives without signal loss.

Supports daisy-chaining for flexible network topologies.

Wiring & Connections:

Input SCANport (from PLC/HIM) → 1203-SG2 → Output SCANport (to drives).

Uses RJ45 connectors (standard SCANport cabling).

Power: Typically derives power from the SCANport connection (no external supply needed).

Comparison with Other SCANport Modules:

Model Function

1203-SG2 SCANport expander (signal isolation & distribution)

1203-GK5 DeviceNet-to-SCANport gateway

1203-SSS Serial (RS485) to SCANport converter

Why Use the 1203-SG2?

✅ Simplifies wiring in multi-drive setups.

✅ Prevents signal loss in long networks.

✅ No external power required (self-powered via SCANport).