Description

FC‑TSDI‑16UNI Safety Digital Input FTA Terminal Assembly

Technical Specifications

• Product Model: FC‑TSDI‑16UNI
• Brand: Honeywell
• Warranty: One Year
• Input Voltage: 24‑48 VDC field signal rating, max 50 VDC category‑III over‑voltage protection
• Operating Temperature: ‑10 °C to +55 °C
• Storage Temperature: ‑40 °C to +85 °C
• Response Time: Matches Safety Manager input scan cycle, <8 ms
• Protection Class: IP20 (DIN‑rail cabinet‑mount unit)
• Accuracy Class: Safety‑grade discrete signal routing, no measurement offset
• Output Frequency: Not applicable (signal termination hardware)
• Rated Current Range: 250 mA slow‑blow per channel group fuse protection
• Communication Interface: Front‑field screw terminals; 20‑pin internal system connector
• Supported Protocols: Internal Safety Manager backplane safety bus
• Overload Capacity: Channel‑group fusing; transient voltage suppression; reverse‑input polarity protection
• Dimensions: 90 mm × 70 mm × 60 mm
• 

Product Overview

The FC‑TSDI‑16UNI is a field‑termination assembly built for Honeywell Safety Manager safety‑instrumented systems, delivering 16 discrete digital input channels split into two isolated groups of eight. It interfaces field safety devices including limit switches, valve feedback contacts, emergency‑stop buttons and NAMUR sensors to the safety‑system processing hardware, providing intermediate signal conditioning and circuit fusing between field wiring and safety I/O cards.

This hardware addresses key safety‑system deployment challenges: distributed field‑contact signal collection, channel‑group fault containment, and simplified cabinet wiring for SIL‑rated safety loops. Integrated per‑group fusing limits fault propagation; a compact DIN‑rail form factor reduces cabinet footprint versus hard‑wired custom terminal setups. Safety‑system engineers, plant‑retrofit technicians and process‑facility maintenance teams benefit most. It eliminates custom‑built termination panel work for safety‑system retrofits and spare‑part replacement, supporting straightforward commissioning and diagnostic troubleshooting on oil‑gas, chemical and power‑plant safety‑instrumented functions. (Word count:173)

Key Application Notes

• Must pair with Honeywell Safety Manager digital‑input processing cards; does not execute independent safety‑logic functions
• Supports both standard 24 VDC dry‑contact inputs and NAMUR‑type sensor wiring
• Replaceable 5×20 mm slow‑acting fuses offer over‑current protection for each 8‑channel bank
• Designed for control‑room safe‑area DIN‑rail installation; not suitable for direct hazardous‑zone mounting
• Certified to TUV, UL, CSA and FM for deployment within SIL‑2 safety‑instrumented loops