Description
Product Overview
The HONEYWELL FX-USI-0002 is a Universal Safety Interface module for the Honeywell Safety Manager system. It is identified in Honeywell documentation as type number FX-USI-0002 and is used as a communication/interface module within the Safety Manager control processor architecture.
The module operates from a 5 VDC supply and has a maximum supply current of 1.2 A. Honeywell specifies the unit for an operating temperature range of -5°C to +70°C and a non-condensing relative humidity range of 10–95%.
The supplied eBay listing identifies the item as FX-USI-0002, Honeywell Safety Manager System Module, with a 5 VDC / maximum 1.2 A supply requirement. The listed condition is New – Open box, with a stated weight of approximately 760 g.
Product Summary
HONEYWELL FX-USI-0002 is designed for the Safety Manager platform and provides the Universal Safety Interface function required by compatible Safety Manager control processors.
Honeywell documentation states that the FX-USI-0002 supports the EUCN protocol. It can replace FC-USI-0001, FC-USI-0002, and FE-USI-0002 in Safety Manager systems from release R140 and higher.
Honeywell also documents the FX-USI-0002 as a pin-to-pin and function-compatible replacement for the FC-USI-0001, FC-USI-0002, and FE-USI-0002 modules, with software-release restrictions that must be checked before replacement.
Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | Honeywell |
| Model | FX-USI-0002 |
| Module Type | Universal Safety Interface |
| Safety Manager Type | USI-0002 |
| Protocol | EUCN |
| Supply Voltage | 5 VDC ±5% |
| Maximum Supply Current | 1.2 A |
| Operating Temperature | -5°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 10–95%, non-condensing |
| Dimensions | 176 × 35.2 × 212 mm |
| Weight | 0.7 kg approx. |
| Approvals | CE, TÜV, UL, CSA, FM |
| Replacement Compatibility | FC-USI-0001 / FC-USI-0002 / FE-USI-0002, subject to system revision |
| Condition in supplied listing | New – Open box |
| Listed Weight | 760 g |
Technical values above are based primarily on Honeywell’s Safety Manager Hardware Reference.
Safety Manager System Integration
The FX-USI-0002 is installed within the Safety Manager control processor architecture.
Honeywell’s current hardware reference shows USI-0002 / FX-USI-0002 installed as a communication module position in the CPCHAS-0002 redundant controller arrangement. A redundant controller can use USI-0002 modules in the corresponding COM positions of the control processors.
This makes the module different from a conventional PLC digital or analog I/O card. Its role is associated with the Safety Manager communication/interface architecture.
Main Features
- Universal Safety Interface for Honeywell Safety Manager
- Type number FX-USI-0002
- USI-0002 module type
- EUCN protocol support
- 5 VDC ±5% power supply
- Maximum 1.2 A supply current
- Suitable for redundant Safety Manager controller configurations
- Pin-to-pin and function-compatible replacement for specified earlier USI modules
- Industrial operating temperature range
- CE, TÜV, UL, CSA and FM approvals
- Compact 35.2 mm module width
- Suitable for maintenance and spare-part replacement of compatible Safety Manager systems
Replacement Compatibility
One of the useful points about FX-USI-0002 is its documented replacement relationship with earlier Honeywell USI modules.
Honeywell states that FX-USI-0002 can replace:
- FC-USI-0001
- FC-USI-0002
- FE-USI-0002
The replacement is pin-to-pin and function compatible, but the Safety Manager software release must be considered. Honeywell specifically states that FX-USI-0002 requires Safety Manager software release R140.1 or higher.
For systems using older software, do not assume that the newer module can simply be installed without checking the system revision.
Installation and Configuration
Before removing an existing USI module, place the Safety Manager system into the appropriate maintenance state and follow the plant’s approved safety procedure.
Record the existing module type, slot position, wiring, connectors and system configuration before replacement.
Recommended procedure:
- Confirm the replacement part number is FX-USI-0002.
- Verify the Safety Manager software release.
- Confirm the existing USI module type and controller configuration.
- Isolate the relevant power and follow the manufacturer’s maintenance procedure.
- Remove the existing module using appropriate ESD precautions.
- Inspect the connector and backplane interface.
- Install the FX-USI-0002 in the correct controller position.
- Restore the system according to the approved commissioning procedure.
- Verify module recognition and communication diagnostics.
- Confirm the redundant controller status and system diagnostics before returning the safety system to normal operation.
Honeywell documentation notes that the module can be used as a spare and can replace the earlier USI modules online under the supported system conditions.
Software and Firmware Considerations
The software revision is particularly important with this module.
Honeywell states that FX-USI-0002 will not be supported by Safety Manager systems running software released before R140.1. For supported systems, the module can function as the earlier FE-USI-0002, FC-USI-0002 or FC-USI-0001.
Honeywell also states that enhanced FX-USI-0002 functionality becomes available with Safety Manager release R151.1 and higher. The system configuration can be updated to the USI-0002 module type online under the documented conditions.
Maintenance Recommendations
Because the FX-USI-0002 is part of a safety-system architecture, maintenance should focus on both hardware condition and system configuration.
Check periodically for:
- Loose or damaged connectors
- Oxidation at interface contacts
- Signs of overheating
- Contamination or dust accumulation
- Mechanical damage to the housing
- Correct module identification
- Correct controller slot position
- System diagnostic messages
- Software compatibility
- Redundant-controller status
Keep the original module identification and software configuration records with the spare-parts documentation.
Inspection Before Shipment
For a replacement FX-USI-0002, recommended inspection includes:
- Verify Honeywell branding
- Confirm FX-USI-0002 part number
- Check USI-0002 identification
- Inspect nameplate and labels
- Check connector condition
- Inspect housing for cracks or deformation
- Check PCB/interface areas where accessible
- Verify no loose mechanical components
- Confirm the module is properly packaged against ESD and mechanical impact
- Record inspection results before shipment
The supplied listing currently describes this particular unit as New – Open box, rather than factory-sealed new.
Important Replacement Note
The FX-USI-0002 should not be treated as a generic Honeywell communication card. It belongs specifically to the Safety Manager architecture.
Before ordering or installing one, compare:
Part number: FX-USI-0002
Module type: USI-0002
System: Honeywell Safety Manager
Software: R140.1 or higher for the documented replacement application
Protocol: EUCN
Supply: 5 VDC ±5%, maximum 1.2 A
This verification is especially important when replacing older FC-USI-0001, FC-USI-0002 or FE-USI-0002 modules.
Frequently Asked Questions
What is the Honeywell FX-USI-0002?
It is a Universal Safety Interface module used in the Honeywell Safety Manager system.
What voltage does it require?
Honeywell specifies 5 VDC ±5%, with a maximum supply current of 1.2 A.
Can FX-USI-0002 replace FC-USI-0002?
Yes. Honeywell documents FX-USI-0002 as a pin-to-pin and function-compatible replacement, provided the Safety Manager software meets the required revision.
Can it replace FE-USI-0002?
Yes. Honeywell lists FE-USI-0002 among the supported replacement modules.
What protocol does it support?
The Honeywell hardware reference identifies EUCN protocol support for FX-USI-0002.
What is the operating temperature?
The specified operating range is -5°C to +70°C.
Search Terms
Honeywell FX-USI-0002
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Safety Manager Universal Safety Interface
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Honeywell FC-USI-0001 Replacement
Honeywell FC-USI-0002 Replacement
Honeywell FE-USI-0002 Replacement
Honeywell Safety Manager Communication Module
Honeywell EUCN USI-0002
