USI-0002 | Honeywell Universal Serial Interface Module

Product Overview

The Honeywell USI-0002 is a Universal Serial Interface Module designed for Honeywell Safety Manager systems. It provides serial communication capabilities for connecting safety controllers to external devices, operator stations, or engineering workstations via standard serial protocols. This module enables configuration, diagnostics, and data exchange in safety instrumented systems requiring serial connectivity.

Key Features

• Universal Serial Interface: Supports RS-232 and RS-485 serial protocols
• Flexible Configuration: Software-configurable baud rate, parity, and data format
• Galvanic Isolation: Isolation between internal circuitry and serial ports
• Status LEDs: TX/RX and diagnostic indicators
• Compact Module: Standard 4TE width for efficient chassis utilization
• Hot-Swap Capable: Replaceable with power on (verify process impact)

Technical Specifications

• Model: USI-0002
• Type: Universal Serial Interface Module
• Protocols: RS-232, RS-485 (software selectable)
• Baud Rate: Configurable (typically 9600–115200 bps)
• Data Format: Software configurable (data bits, parity, stop bits)
• Isolation: Galvanic isolation on serial ports
• Connector: Standard serial connector (DB9 or terminal block, verify variant)
• Module Width: 4 TE (20.32 mm / 0.8 in)
• Power Requirements: 5 VDC (refer to system documentation)
• Operating Temperature: -40°C to +70°C
• Approvals: CE, TÜV, UL, CSA, FM

Installation Guide

1. Chassis Insertion: Slide module into designated slot; secure with screws
2. Flat Cable: Connect to horizontal IO bus or dedicated communication bus
3. Serial Connection: Connect serial cable to external device (operator station, modem, etc.)
4. Configuration: Set baud rate, protocol, and format via Safety Manager engineering software
5. Grounding: Ensure proper shield grounding for RS-485 networks

FAQ

Q: Can this module communicate with non-Honeywell devices?
A: Yes, the USI-0002 uses standard serial protocols (RS-232/RS-485) and can communicate with any device supporting these protocols, provided the communication protocol (Modbus, proprietary, etc.) is compatible.

Q: What is the maximum cable length for RS-485?
A: RS-485 supports up to 1200 meters (4000 ft) at lower baud rates. Length decreases at higher baud rates. Use proper termination resistors at both ends of the bus.

Q: Can I use this for Safety Manager configuration?
A: Yes, the USI-0002 can be used for engineering workstation connection during system configuration and commissioning.

Selection Tips

• Verify required serial protocol (RS-232 for point-to-point, RS-485 for multi-drop networks)
• Confirm baud rate requirements of connected devices
• For Ethernet communication, use dedicated Ethernet communication modules instead
• Consider isolation requirements for long-distance or noisy environments