Honeywell 51303932-202 (51303932202) Product Details

Product Model: 51303932-202 (51303932202)

Brand: Honeywell

Product Category: MU-TSDM02 SDI FTA Serial Device Interface Field Termination Assembly

Applicable Systems: Honeywell Experion PKS C300 / TPS / UCN Distributed Control System 

I. Product Overview

51303932-202 is a manual/automatic mode serial interface FTA of the Honeywell SDI (Serial Device Interface) series. It serves as the physical interface layer between the C300 controller and the on-site serial devices, responsible for signal conversion, electrical isolation, line protection, and supports RS-232/RS-485 serial communication protocols, enabling data interaction between the DCS system and intelligent instruments, frequency converters, PLCs, etc.

II. Core Specification Parameters

1. Interface Characteristics

Interface Type: Serial Device Interface FTA

Communication Protocol: RS-232 (EIA-232) / RS-485

Channels: 1 channel

Mode: Manual / Automatic Switching

Baud Rate: Supports 300 ~ 115200 bps

Data Bits: 5/6/7/8

Parity: None / Odd / Even Parity

Stop Bit: 1/2

2. Electrical Parameters

Isolation Voltage: Channel - System 1500 V AC

Input Impedance: RS-232: 3 kΩ; RS-485: 120 Ω

Drive Capability: RS-485: Supports 32 nodes

Operating Power Supply: 24 V DC (Backplane Power Supply)

Power Consumption: ≤ 2.5 W

Protection: Overvoltage, Overcurrent, Reverse Connection, Surge, ESD Protection

3. Environmental Parameters

Operating Temperature: -40°C ~ +75°C (Wide Temperature)

Storage Temperature: -55°C ~ +85°C

Humidity: 5% ~ 95% RH (Non-condensing)

Protection: PCB Three-Defense Coating (Anti-moisture, Anti-salt fog, Anti-mold)

Vibration / Impact: IEC 60068 Standard

EMC: FCC Part 15 Class A

4. Physical Characteristics

Size: Standard DCS Card (150 mm × 100 mm × 25 mm)

Weight: Approximately 0.3 kg

Installation: Hot-swappable, standard UCN / C300 Rack

Interfaces: Front spring-type terminals + Backplane Bus Interface

Status Indicators: PWR (Power), RUN (Operation), TX/RX (Transmit/Receive), FAULT (Fault) LEDs

5. Certification

Certification: CE, FCC Class A, UL

Compliance: RoHS (Some Versions)

III. Functional Characteristics

1. Serial Communication Interface

Protocol Compatibility: Supports Modbus RTU, ASCII, DF1, third-party serial protocols

Manual / Automatic Mode:

Manual Mode: Local hardware switch to control communication status

Automatic Mode: System software remote control

Data Transparent Transmission: No protocol conversion, direct transmission

Full Duplex / Half Duplex: RS-232 Full Duplex; RS-485 Half Duplex

2. Signal Isolation and Protection

High Electrical Isolation: 1500 V AC, Suppressing Ground Potential Difference

Multi-level Protection: TVS Surge, PTC Overcurrent, Reverse Connection Protection

Impedance Matching: Built-in Terminal Resistor, Suitable for Long-Distance Transmission

3. System Compatibility

Fully Compatible: Experion PKS C300, TPS, UCN Systems

Plug-and-Play: Direct Replacement of the same series FTA (203/226/227/428/476)

No Redundancy: Single-channel Non-redundant Design

4. Application Adaptability

Wide Temperature Three-Defense: Suitable for Extreme Temperature, High Humidity, Corrosive Environments

Long-Distance Transmission: RS-485 Supports the Farthest 1200 m

Multi-Device Networking: RS-485 Supports Multi-point Device Communication IV. Comparison of 51303932 Series Models Table

Model Name Interface Mode Isolation Wide Temperature Range CE Channels

51303932-202 SDI FTA RS-232/485 Manual / Automatic 1500 V AC ✅ ✅ 1

51303932-203 SDI FTA RS-232/485 Automatic 1500 V AC ✅ ✅ 1

51303932-226 SDI FTA RS-232/485 Manual / Automatic 1500 V AC ✅ ❌ 1

51303932-227 SDI FTA RS-232/485 Manual / Automatic 1500 V AC ✅ ✅ 1

51303932-428 SI FTA RS-232 Automatic 1500 V AC ✅ ✅ 1

51303932-476 Modbus FTA RS-232/485 Automatic 1500 V AC ✅ ✅ 1

V. Typical Applications

Intelligent Instrument Communication: Transmitters, Analyzers, Flowmeters; Modbus Access

Frequency Converter Control: Parameter Monitoring and Speed Adjustment of Frequency Drive Devices

PLC Data Interaction: Networking between Third-party PLC and DCS

Remote I/O Communication: Data Acquisition by Distributed Remote I/O Modules

Barcode / Weighing Equipment: Automatic Identification and Weighing System Access on Production Lines

Long-distance Equipment Networking: Centralized Access of Serial Devices at Factory Perimeters

VI. Key Points for Use and Maintenance

Connections: RS-485 uses shielded twisted pair, with a 120 Ω impedance at the terminal

Mode Settings: Manual mode through hardware switch; Automatic mode by system configuration

Verification: Regularly check communication rate and parity match

Faults: Non-redundant design; Faults require offline replacement

VII. Product Status

Type: DCS Serial Interface Terminal Component (Spares)

Production Status:停产 (legacy spares)

Supply： Original inventory， refurbished， second-hand spares

Replacement： New C300 Serial Interface Module

VIII. Model Code Interpretation (51303932-202)

513： Honeywell DCS Spare Prefix

03932： SDI Serial Device Interface FTA Series

-202： Manual / Automatic mode， RS-232/485， wide temperature range， CE version