Overview

The ABB SDCS-FEX-2 (3ADT306311P2103) is a critical field excitation board in ABB’s DCS 500 and DCS 600 DC drive platforms. It precisely regulates field current supplied to DC motor windings, enabling stable torque output and accurate speed control. Typically installed inside the armature converter module—adjacent to the SDCS-POW-1 power supply board—it plays a central role in motor performance and protection.

Moreover, this board supports high-voltage and high-current field excitation, making it a reliable solution for heavy industrial applications including steel rolling mills, paper production lines, and large conveyor systems. Its compact yet rugged design ensures dependable long-term operation in harsh environments.

In addition, seamless integration with ABB drive control modules helps reduce commissioning effort and simplifies maintenance procedures. Engineers leverage it to ensure consistent drive response and safeguard the field circuit from overloads or faults.

Technical Data

Typical Applications

This field excitation board is widely used across industries where DC drive systems operate in continuous and demanding duty cycles. For instance, it maintains precise motor control in:

• Steel rolling and metal processing lines

• Paper and pulping machines

• Textile production machinery

• Heavy material handling and conveyor drives

• Industrial modernization and retrofit projects

Moreover, the SDCS-FEX-2 ensures smooth acceleration, stable torque behavior, and reliable fault protection, contributing to improved productivity and reduced downtime.

FAQ

Q1: What drive systems is this board compatible with?
A1: It is designed for ABB DCS 500 and DCS 600 DC drive systems.

Q2: What field voltage and current does it support?
A2: It supports up to 500 VDC and 40 A, depending on configuration and cooling.

Q3: Where is the board installed?
A3: Inside the armature converter module, mounted next to the SDCS-POW-1 board.

Q4: Can it be used in retrofit projects?
A4: Yes, it is commonly deployed to upgrade or maintain legacy ABB DC drive installations.

Q5: What industries typically use this module?
A5: Steel, paper, textile, and heavy industrial automation sectors.