HONEYWELL 8939-HN Fiber Optic Extender Module

HONEYWELL 8939-HN Fiber Optic Extender Module

8939-HN Specifications

and associated S8 I/O modules.
The Combo cable interface connectors are on the IOTA.
Each Combo cable can be configured to support Series 8 I/O.
The Fiber Option Extender modules support the extension of the I/O link beyond the Series 8 cabinet with the 

S8 C300, enabling remote applications of the Series 8 I/O.
Shipping Weight : 2 Kg

8939-HN Description

The Honeywell 8939-HN Multi-Mode Fiber Optic Extender IOTA is engineered for industrial applications, providing 

reliable remote I/O connectivity between the S8 C300 controller and Series 8 I/O modules. Ideal for process control, 

factory , and energy management, this module extends the I/O link beyond the Series 8 cabinet, enabling remote 

applications of the Series 8 I/O. It supports multi-mode fiber optics, ensuring efficient data transmission over long 

distances with minimal interference.

Frequently asked questions：

Q1: What is the Honeywell 8939-HN module used for?
A: The Honeywell 8939-HN is a Multi-Mode Fiber Optic Extender IOTA designed to extend communication between 

the Series 8 I/O modules and the S8 C300 controller, enabling remote I/O deployment.
Q2: How does the 8939-HN connect to the control system?
A: It connects via Combo cable interfaces located on the IOTA, which link the Series 8 I/O to the S8 C300 controller.
Q3: Does the 8939-HN module support redundancy?
A: Yes, the 8939-HN module uses two redundant Combo cable interfaces, ensuring reliable and continuous 

communication between the controller and I/O modules.
Q4: What is the 8939-HN main advantage of using the 8939-HN Fiber Optic Extender?
A: It allows extension of the I/O link beyond the standard Series 8 cabinet, making it ideal for remote or distributed 

industrial applications.

Product Applications

Energy Management and Utilities: Utilizing its long-distance transmission capabilities for distributed control in 

power dispatching, substation , and large-scale utility monitoring.
Petrochemicals: Widely applied in large-scale refineries, chemical plants, etc., in scenarios with high interference 

resistance requirements and harsh physical environments. Its reinforced design supports operation in extreme 

temperatures ranging from -40°C to +85°C.

Core technical features:
Remote expansion: Breaks through the distance limitations of standard cabinets, enabling cross-space connection 

of I/O links.
High reliability/Redundancy: Supports dual redundant Combo cable interfaces to ensure uninterrupted 

communication in industrial critical applications.
Protocol compatibility: Generally compatible with industrial communication protocols such as Modbus RTU 

and CANopen.

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