FC-USI-0002 Honeywell Universal Safety Interface CC Module

Description

Product Model: FC-USI-0002
Product Brand: Honeywell
Product Series: Safety Manager / Universal Safety Interface

Key Features (from public sources):

• Acts as a Universal Safety Interface (USI) module for Safety Manager systems (CC = “common control” or controller interface)
• Supports the EUCN protocol (Honeywell’s internal safety / communications protocol)
• Pin-to-pin and function compatible replacement possibility with FX-USI-0002 (successor / upgrade path)
• Factory warranty of 12 months (when new, factory packing) as indicated in vendor listing

Role & System Fit

In Honeywell’s Safety Manager or Safety I/O architectures, Universal Safety Interface (USI) modules serve as gateway or interface modules, linking safety logic (in controllers) with safety I/O, diagnostics, and redundant paths. The FC-USI-0002 is one such USI module designated for the “CC” side in the Safety Manager system. It helps bridge safety internal logic with field safety modules or act as a node in the safety network.

In practical systems, older Honeywell modules such as FC-USI-0001 or FC-USI-0002 are being retired; the newer FX-USI-0002 may replace them in many safety architectures (pin-to-pin and functionally compatible in many cases)  But compatibility depends on system software versions (e.g. Safety Manager R140+, etc.).

Therefore, FC-USI-0002 is often found in older Safety Manager installations, and when upgrading, care must be taken regarding software compatibility and pin mapping. It is part of the control infrastructure (the “CC” side) of the safety logic network.

Technical Features & Benefits

Here’s what is publicly documented or deduced about FC-USI-0002:

Protocol & Communications

• It supports EUCN protocol (which is Honeywell’s internal safety / control network protocol)
• It is listed as one of the modules that FX-USI-0002 can replace (i.e. same role or pin assignment)
• The hardware reference mentions “FE-USI-0002 and FX-USI-0002 support the EUCN protocol. FX-USI-0002 can replace FC-USI-0001, FC-USI-0002, and FE-USI-0002 modules from Safety Manager R140 and later.”

This indicates that FC-USI-0002 has a key networking / interface role in safety networks.

Replacement & Obsolescence

• The Honeywell Hardware Reference documentation indicates FC-USI-0002 (and FC-USI-0001) are withdrawn modules.
• Specifically, the doc states: “The FC-USI-0001 and FC-USI-0002 were already withdrawn from sales.
• The recommended replacement (for forward compatibility) is FX-USI-0002—pin-pin and functionally compatible with older FC-USI modules under certain system versions.
• The transition is supported in newer versions of Safety Manager (R140.1 and up)

Because of its withdrawn status, when you work with FC-USI-0002, you should ensure you have spares, or plan upgrade paths to FX-USI-0002.

Technical Specifications Table

Because public sources provide limited electrical / detail specs for FC-USI-0002, the table below combines known facts and inferred roles. Use this as a guide, not a guaranteed reference.

Because the module is legacy, you will likely find fewer published specs beyond what the Hardware Reference provides.

Installation & Migration Insights

Here are practical tips when working with FC-USI-0002, especially given its legacy status.

Deployment in Existing Systems

• If your Safety Manager system is versions pre-R140, FC-USI-0002 may still be necessary; later versions might require FX-USI-0002 replacements.
• When upgrading, verify that your software supports FX-USI-0002 and that pin mapping remains consistent.
• Because it is a controller interface module, wiring to other safety I/O, backplanes, and logic modules must be carefully preserved when substituting.

Replacement & Spares Strategy

• Because FC-USI-0002 is withdrawn, maintain spares if you expect long-term system support.
• When replacing with FX-USI-0002, perform software recompiles or configuration changes as required by your system.
• Before installing a replacement, benchmark the module in offline/simulated mode, especially network communications, to prevent unexpected downtime.

Maintenance Best Practices

• Label module revision, part number, and connection wiring clearly to prevent mis-insertion of non-compatible boards.
• Periodically verify communication health and diagnostics on the safety network to detect aging or deteriorating modules.
• During any hardware change, backup safety logic, configuration, and network mappings to allow rollback if necessary.