Overview

The MTL 8939-HN Fibre Optic Extender Module is designed to extend fieldbus communication over long distances using fiber optic technology.

It provides galvanic isolation between copper and fiber segments, ensuring safe and interference-free data transmission in hazardous and noisy industrial environments. The module supports both single-mode and multi-mode fiber, giving engineers flexibility to design networks that meet specific distance and performance requirements. Its modular design allows seamless integration into MTL8000 distributed I/O systems, making it ideal for large-scale automation projects.

This product reflects Eaton/MTL’s expertise in hazardous area instrumentation and industrial networking, offering trusted performance and lifecycle support. Therefore, it is widely adopted in oil & gas, chemical, and energy industries where reliable communication and safety compliance are critical.

Technical Data

Typical Applications

The MTL 8939-HN is widely used in:

• Oil & Gas facilities – Extends fieldbus communication across offshore platforms and refineries.

• Chemical plants – Provides secure long-distance connectivity between hazardous area devices and control systems.

• Power generation – Ensures reliable communication between turbines, boilers, and distributed monitoring systems.

• Factory automation – Supports large-scale installations requiring fiber optic backbone networks.

• SCADA networks – Enables long-distance communication with remote monitoring stations.

Its galvanic isolation improves safety and reduces maintenance costs, making it ideal for mission-critical automation projects.

FAQ

Q1: What is the main function of the MTL 8939-HN?
A1: It extends fieldbus signals over fiber optics, ensuring reliable long-distance communication.

Q2: Which protocols are supported?
A2: Foundation Fieldbus™ and Profibus-PA networks.

Q3: How far can signals be transmitted?
A3: Up to 5 km with multi-mode fiber and up to 30 km with single-mode fiber.

Q4: Is it suitable for hazardous environments?
A4: Yes, it complies with ATEX and IECEx standards for hazardous area applications.

Q5: What industries commonly use this extender?
A5: Oil & gas, chemical, power generation, and automation sectors.