Product Description

Overview

The Honeywell FC-USI-0001 is a Universal Serial Interface (USI) module engineered for use with Safety Manager and FSC (Fail Safe Control) systems. It acts as a secure communication bridge between safety controllers and external devices, enabling safe and reliable data exchange without compromising the integrity of the safety system.

Designed for non-safety communication tasks, the module facilitates reporting of alarms, diagnostic status, and process variables to supervisory systems such as DCS, PLCs, or HMIs. Its built-in electrical isolation ensures that faults in external devices cannot affect safety-critical controller operations.

Key Features

Multi-Protocol Support

• Configurable for RS232, RS422, or RS485 (2-wire or 4-wire) interfaces.

• Supports standard industrial protocols, including Modbus RTU (Master/Slave), for seamless integration with third-party systems.

High Reliability and Isolation

• Provides robust galvanic isolation between the Safety Manager backplane and external communication lines.

• Designed for high-reliability SIL-rated environments, ensuring dependable operation within safety systems.

Flexible Configuration

• Adjustable baud rates from 300 to 19,200 (and higher depending on configuration).

• Parameters such as parity, stop bits, and station addresses are configured via Honeywell Safety Builder software.

Efficient Data Handling

• Internal buffers optimize data transmission and reception without overloading the main Safety Manager processor.

• Front-panel LEDs (TX/RX) offer immediate visual feedback of communication activity and module health.

Technical Specifications

Applications

• Linking Honeywell Safety Manager systems to HMIs or DCS for monitoring and reporting.

• Safe transmission of non-critical safety data such as alarms, diagnostics, and process values.

• Integration into standalone or Experion PKS/PlantScape systems.

FAQ

Q: Can this module connect to multiple external devices simultaneously?
A: Yes, it supports two independent serial channels configurable for RS232, RS422, or RS485.

Q: Does it support Modbus protocol?
A: Yes, it supports Modbus RTU as both Master and Slave.

Q: How is configuration handled?
A: All communication parameters, including baud rate, parity, stop bits, and addresses, are set via Honeywell Safety Builder software.

Q: Is this module suitable for SIL-rated systems?
A: Yes, it is designed for use within Honeywell SIL-rated Safety Manager and FSC environments.