SFP991-1 Siemens 6GK5991-1AD00-8AA0 Fiber Transceiver

Product Description

The Siemens SCALANCE SFP991-1 (6GK5991-1AD00-8AA0) is an industrial-grade SFP optical transceiver developed for Siemens SCALANCE Ethernet switches. It provides a reliable multimode fiber interface for industrial Ethernet networks where copper cabling is unsuitable due to long distances or electromagnetic interference.

Designed as a plug-in accessory, this SFP module supports fast Ethernet transmission and can be inserted or replaced during operation, minimizing downtime. Its compact form factor and standardized LC fiber interface make it well suited for scalable network designs in demanding industrial environments.

This module is commonly deployed in manufacturing lines, process plants, and infrastructure networks that require stable, noise-immune communication over fiber optic links.

Functional Role and Use Cases

The SCALANCE SFP991-1 (6GK5991-1AD00-8AA0) extends SCALANCE X switches with optical connectivity, allowing controllers, remote I/O, and network segments to be interconnected over multimode fiber. It is especially effective in installations with high EMI exposure or where electrical isolation between network segments is required.

Technical Specifications