Product Details
The Honeywell FX-USI-0002, also cataloged as the FX-USI-0002 Universal Signal Interface Module, operates as a dedicated hardware component for multi-type signal acquisition and field device control within Honeywell Safety Manager platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FX-USI-0002 |
| Brand | Honeywell |
| Origin | USA |
| Operating Temp | -40 to +70 deg C |
| Power Consumption | Main: 24 VDC (+10%), max 2.5 A; Logic: 5 VDC, max 1.2 A |
| Input Types | Voltage (0-10V), Current (4-20mA), Thermocouples (J, K, T, E), RTD (Pt100, Ni120), Digital Inputs (DI) |
| Output Types | Analog: 4-20mA (sourced); Digital Outputs (DO): 24 VDC, 0.5 A max |
| Accuracy & Resolution | Analog Accuracy: +/-0.05% of span; Digital Resolution: 1 millisecond |
| Isolation | 1500 V, channel-to-channel and channel-to-bus |
| Bus Protocol | Compliant with HART 7.0 |
4-20 mA HART Loop Protocol & Galvanic Isolation
The module incorporates high-density galvanic isolation rated at 1500 V between individual channels and the backplane bus. This barrier architecture eliminates common-mode transients, prevents ground loop currents, and isolates field sensor disturbances from the logic solver. Each analog channel directly supports the 4-20 mA HART loop protocol (compliant with HART 7.0), enabling bi-directional digital data pass-through for instrument diagnostics and secondary process variable telemetry without disturbing primary analog safety logic.
Frequently Asked Questions
Q: Does the FX-USI-0002 support field instrument HART protocol pass-through on analog channels?
A: Yes, all standard 4-20 mA analog input and output channels are fully compliant with the HART 7.0 protocol for smart transmitter communication.
Q: What thermal limits apply to the operational environment of the FX-USI-0002 assembly?
A: The module is specified for continuous field operation across an extended temperature envelope ranging from -40 deg C to +70 deg C.
Field Installation Guidelines
- Confirm system main power (24 VDC) and internal logic bus power (5 VDC) are isolated prior to inserting the module into the chassis rack.
- Ensure proper grounding of all shielded twisted-pair cables at the cabinet entry bar to preserve the 1500 V isolation barrier integrity.
- Wire thermocouple inputs using correct extension leads, and land RTD sensors maintaining equal lead resistance on Pt100/Ni120 configurations.
- Verify digital output loads do not exceed the maximum rating of 0.5 A at 24 VDC per channel to prevent overcurrent trip activation.
- Snap the module securely onto the chassis guide rail and engage the backplane locking clips to establish rigid grounding contact.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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