Honeywell FC-BSN Series Modules – FC-BSN-1608

Name: Honeywell FC-BSN Series Modules – FC-BSN-1608
Brand: Honeywell

Model: FC-BSN-1608

Brand Honeywell

Series FC-BSN-1608

Model FC-BSN-1608

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Product Details And Specifications

Honeywell FC-BSN Series Technical Notes

The Evolution of FC-BSN Architecture

The FC-BSN series was introduced as part of Honeywell's FSC (Fail-Safe Controller) platform, which entered the market in the early 1990s as a dedicated SIS solution. The original FSC architecture used a proprietary node bus (the Safety Node Bus, SNB) to interconnect the central processing unit with distributed I/O racks. Early FC-BSN variants were designed for single-bus, simplex configurations. As process safety standards evolved and SIL 3 applications demanded higher redundancy, the series expanded to support dual-bus and redundant node configurations.

Through the 2000s, Honeywell integrated the FSC platform into the broader Safety Manager product line, maintaining backward hardware compatibility with FC-BSN modules while introducing firmware-level enhancements. By the 2010s, the Safety Manager SC (SMSC) platform emerged as the designated successor, utilizing updated communication protocols. However, the FC-BSN series remains in active service at thousands of legacy installations worldwide, and Honeywell's end-of-life announcements for specific FC-BSN variants have created sustained demand for certified replacement and spare parts. Compatibility between FC-BSN generations requires careful revision-level verification, particularly for backplane slot assignments and bus termination settings.

FC-BSN Full Catalog & Functionalities (SKU List)

Controllers & CPUs

FC-BSN-1608: Safety node bus interface module, 16-slot backplane configuration, primary node communication.
FC-BSN-0808: Safety node bus interface module, 8-slot backplane, compact rack deployment.
FC-BSN-1616: Dual-bus node interface, 16-slot, supports redundant SNB topology.
FC-BSN-0816: 8-slot backplane, dual-bus capable, mid-size SIS rack integration.

Digital Input (DI) Modules

FC-SDI-1624: 24 VDC digital input, 16-channel, SIL 2 rated, field-side isolation.
FC-SDI-1648: 48 VDC digital input, 16-channel, high-voltage field interface.
FC-SDI-3224: 32-channel DI, 24 VDC, high-density I/O rack configuration.
FC-SDI-1624F: 16-channel DI with HART pass-through, 24 VDC, field diagnostics enabled.

Digital Output (DO) Modules

FC-SDO-0824: 8-channel digital output, 24 VDC, solid-state relay, SIL 2.
FC-SDO-0824R: 8-channel DO with relay output, 24 VDC, mechanical contact closure.
FC-SDO-1624: 16-channel digital output, 24 VDC, high-current drive capability.

Analog Input (AI) Modules

FC-SAI-1620: 16-channel analog input, 4–20 mA, HART-enabled, SIL 2 certified.
FC-SAI-0820: 8-channel AI, 4–20 mA, standard process measurement interface.
FC-SAI-1601: 16-channel AI, 1–5 VDC input range, voltage signal field devices.

Power Supply Modules

FC-PSU-2401: 24 VDC system power supply, single output, rack-mount, redundancy-capable.
FC-PSU-2402: 24 VDC redundant power supply module, hot-swap, dual-feed input.

Communication & Termination

FC-SNBM-0001: Safety Node Bus master module, primary bus controller for FSC rack.
FC-SNBT-0001: SNB bus terminator, required at physical end of node bus segment.

Quality Control for the FC-BSN Range

FC-BSN series modules incorporate complex backplane bus transceivers and safety-rated communication logic that require specialized test procedures beyond standard power-on verification. DriveKNMS applies the following protocol to all FC-BSN units processed through its facility:

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