Product Overview

Basic Information

• Part Number: 51304920100 (51304920‑100)

• Module Type: Serial Interface I/O Module (SIM)

• Compatible System: Honeywell TDC3000 / TPS

• Manufacturer: Honeywell

• Country of Origin: USA

• Dimensions: 216 × 160 × 30 mm (8.5 × 6.3 × 1.2 in)

• Weight: Approx. 0.5 kg (1.2 lb)

• Certification: CE, RoHS, UL

Technical Specifications

• Power Supply: 24 VDC ±10% (backplane), 150 mA typical

• Ports: 1 × RS‑232/RS‑485 (software selectable)

• Protocols: ASCII, Modbus RTU, Honeywell proprietary

• Baud Rate: 300–115.2 kbps (configurable)

• Data Bits: 7/8; Parity: None/Even/Odd; Stop Bits: 1/2

• Isolation: 1500 VDC (channel‑to‑backplane)

• Operating Temperature: -10°C to +55°C

• Storage Temperature: -20°C to +70°C

• Humidity: 5%–95% RH, non‑condensing

• Mounting: Standard TDC3000 I/O rack slot

Key Features

• Multi‑Protocol Serial Bridge: Connects DCS to serial devices (printers, HMIs, modems).

• Dual Electrical Interface: Software‑selectable RS‑232 (point‑to‑point) / RS‑485 (multi‑drop).

• High‑Speed Communication: Up to 115.2 kbps for fast data exchange.

• Electrical Isolation: Protects DCS from external noise/ground loops.

• Hot‑Swappable: Online replacement without system shutdown.

• Self‑Diagnostics & LEDs: PWR/RUN/FLT indicators for real‑time status.

• Conformal Coating: Withstands dust, moisture, and harsh chemicals.

Application Scope

• Industries: Power, chemical, oil & gas, pulp & paper, metallurgy.

• Use Cases:

  • Serial printer output (alarm/log/report)

  • Terminal/console connection for system maintenance

  • Modem link for remote diagnostics

  • Integration with third‑party serial devices (PLCs, meters)

• System Role: TDC3000/TPS serial communication gateway.

Installation & Wiring

1. Power Off: De‑energize the rack before insertion/removal.

2. Rack Installation: Insert into a standard TDC3000 I/O slot and secure.

3. Serial Wiring:

   • RS‑232: Shielded 3‑wire (TX/RX/GND)

   • RS‑485: Shielded twisted‑pair (D+/D‑/GND)

   • Keep cables away from high‑voltage lines.

4. Grounding: Single‑point grounding to avoid ground loops.

5. ESD Protection: Wear anti‑static wristbands during handling.

Indicator Description

• PWR (Green, steady): Power supply normal.

• RUN (Green, flashing): Module communicating and operating normally.

• FLT (Red, on): Module fault, communication loss, or wiring error.

Maintenance Requirements

• Periodic Inspection: Check connections/terminals for looseness/corrosion.

• Cleaning: Wipe surface dust with a dry soft cloth; avoid liquid cleaners.

• Replacement: Use only original Honeywell parts; do not disassemble the board.

• Fault Handling: Address red FLT alarms promptly to avoid communication loss.

Safety Notice

• All wiring and maintenance must be performed with power disconnected.

• Do not exceed rated voltage, current, or temperature limits.

• Unauthorized modification or disassembly is prohibited.

• Comply with site safety rules and ESD procedures.