Product Short Description
Product Name: Honeywell FC-DCOM-232/485 Communication Interface Module (Field Terminal Assembly)
Product Overview: The Honeywell FC-DCOM-232/485 is a communication field terminal assembly (FTA) in Honeywell’s Safety Manager system. It provides standard serial connectivity for the Safety Manager, acting as the critical bridge interfacing industrial field instruments, PLCs, and SCADA systems with Honeywell safety systems. It is driven by one or a redundant pair of control processors and draws power directly from the connected control processor — no external power supply required.
Description
Technical Specifications:
- Model: FC-DCOM-232/485 (or FS-DCOM-232/485)
- Interfaces: 1 × RS-232 port, 2 × RS-485/422 ports
- Input Voltage: 5 V DC ±5 % (supplied by control processor)
- Input Current: Max 500 mA
- RS-232 Baud Rate: 0 – 250 kBaud (EIA/TIA-232 compliant)
- RS-485 Baud Rate: 0 – 2 MBaud (supports transparent, FM0, FM1, or Manchester coding)
- Operating Temperature: -5 °C to +70 °C (cabinet environment)
- Dimensions: approx. 110 × 70 × 61 mm
- Weight: 1.2 kg
- Mounting: DIN rail mount (TS32 / TS35)
- Certifications: CE, TÜV, UL, FM (SIL 3 compliant)
Functional Features: High reliability designed for mission-critical safety applications; no independent power supply needed (powered directly from control processor, simplifying cabinet wiring); multi-protocol support integrating RS-232, RS-485, and RS-422 physical interfaces; long-distance RS-485 transmission suitable for large industrial installations; compact, high-integration design saving cabinet space with good EMC.
Application Scenarios: LNG plants (long-distance monitoring networks); large chemical plants (toxic gas monitoring systems); nuclear power plants (high-isolation communication for emergency shutdown system networks); offshore oil platforms (compact shock-resistant cabinets connecting weather and wellhead monitoring equipment).
Structural & Material Characteristics: Compact DIN rail-mountable module with integrated transceivers, approx. 110 × 70 × 61 mm, IP-rated for cabinet environment.
Installation Requirements: Install on TS32 or TS35 DIN rail. Ensure the driving control processor delivers stable 5 V DC ±5 % — input voltage drops exceeding -5 % will freeze the transceivers. Properly terminate RS-485 loops on long-distance runs, especially when operating near the 2 MBaud limit.
Usage Notes: Verify stable 5 V DC supply from the control processor; voltage drops exceeding -5 % will cause communication freeze. When data corruption occurs, verify bus coding configuration — mismatched formats between Transparent, FM0, FM1, or Manchester will cause framing errors. Inspect termination resistors on long-distance RS-485 loops when running near maximum 2 MBaud.
Reviews
There are no reviews yet.