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Key Technical Specifications
| Parameter | Specification |
| Model Part Number | FC-TSDI-16UNI |
| System Compatibility | Honeywell Safety Manager / Fail Safe Controller (FSC) |
| Channel Capacity | 16 galvanically connected digital input channels |
| Nominal Field Voltage | 24 V DC (−15% / +30%) |
| Field Connection Type | Screw terminal blocks with integrated fuse holders |
| System Interface | Mass-termination ribbon cable connector to Safety I/O card |
| Overcurrent Protection | Dual field supply fuses (F1 and F2 onboard fuse sockets) |
| Safety Integrity Level | SIL3 certified in combination with Safety Manager DI modules |
| Mounting Format | Standard TS35 DIN rail mounting carrier |
| Operating Temperature | −5°C to +70°C (Cabinet internal ambient) |
| Dimensions (H x W x D) | 125 × 85 × 55 mm (4.92 × 3.35 × 2.17 inches) |
| Unit Weight | 0.35 kg (0.77 lbs) |
Product Introduction & Supply Chain Strategy
The Honeywell FC-TSDI-16UNI is a 16-channel Universal Safe Digital Input Field Termination Assembly (FTA). Operating as the physical interface bridge between plant field switches and Honeywell Safety Manager input cards, it routes 24 V DC field signals while providing centralized fuse protection and reliable mass-termination cabling to simplify marshalling cabinet wiring.
Maintaining the FC-TSDI-16UNI in New Surplus inventory is essential for preventing extended plant shutdowns. Field termination boards subjected to years of thermal cycling, environmental corrosion, or overcurrent spikes often develop hairline PCB trace cracks and degraded fuse contact resistance. Sourcing genuine New Surplus ensures factory-spec terminal clamping force, zero copper trace degradation, and a reliable 10-to-15 year operational lifespan, giving you a low Total Cost of Ownership (TCO) compared to the extreme costs of an emergency outage.
FC-TSDI-16UNI
FC-TSDI-16UNI
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Perform Lock-Out/Tag-Out (LOTO) procedures on the 24 V DC power distribution bus feeding the marshalling cabinet.
- Put on a grounded ESD wrist strap before touching internal wiring connectors or bus links.
- Label each incoming field pair with wire markers matching your site loop drawings before disconnecting.
- Verify that onboard fuses (F1 and F2) match the amperage ratings specified in the project documentation.
Stage 2: Removal
- Disconnect the mass-termination cable plug leading to the main Safety Manager I/O rack.
- Loosen terminal screws and remove all 16 field wiring pairs from the terminal block.
- Unclip the orange carrier base from the TS35 DIN rail using a flathead screwdriver to release the locking tab.
Stage 3: Installation & Seating
- Snap the new FC-TSDI-16UNI carrier firmly onto the TS35 DIN rail until the locking clip engages completely.
- Re-attach field signal wires to screw terminals following channel assignment schedules.
- Reconnect the system interface ribbon cable, ensuring the locking latches snap into place to secure the connector.
Stage 4: Power-On & Testing
- Re-energize the 24 V DC field power supply.
- Measure voltage across field terminal pairs to confirm correct 24 V DC loop power presence.
- Trigger a test contact input in the field and verify channel status changes within the Safety Builder diagnostic software.
Firmware/Software Versions & Upgrade Notes
- Hardware Passivity: The FC-TSDI-16UNI is a passive hardware termination assembly and does not contain programmable firmware.
- Module Matching: Ensure the connecting system cable links to compatible Honeywell Safety Manager Digital Input modules (such as FC-SDI-1624 or similar 24 V DC DI cards).
- Fuse Replacement: Always replace blown fuses with identical quick-acting, high-interrupting-capacity fuses to preserve SIL3 safety ratings and prevent trace damage during field faults.
- Redundant Loop Wiring: In redundant DI card setups, verify that dual-cable splitting adapters are securely attached and keyed correctly to prevent channel inversion.
Frequently Asked Questions (FAQ)
Q: How can I verify that this FC-TSDI-16UNI is New Surplus?
Every unit is sourced directly from canceled project stock and OEM reserves. They arrive in factory packaging with clean, un-torqued screw terminals, un-corroded DIN mounting clips, intact fuse holders, and documented serial numbers.
Q: What is the primary purpose of the onboard F1 and F2 fuses?
F1 and F2 provide current-limiting protection for the dual 24 V DC field power feeds supplying the 16 input channels. This prevents short circuits in field wiring from damaging the upstream system power supplies or I/O modules.
Q: Why choose New Surplus over a refurbished or pulled terminal board?
Refurbished or pulled terminal boards frequently suffer from worn screw threads, hairline PCB cracks, and oxidized connector contacts caused by harsh industrial environments. Buying New Surplus ensures optimal clamping force, low contact resistance, and long-term signal integrity without the risk of intermittent field faults.
Q: Can this termination assembly be installed in hazardous area enclosures?
Yes, when mounted inside an appropriately certified IP54 or NEMA 4X cabinet and wired in accordance with Non-Incendive or Intrinsically Safe loop parameters defined in your site installation manual.
Q: What warranty coverage comes with this assembly?
The FC- comes with a complete 12-to-24 month functional replacement warranty, delivering full OEM-level reliability without lengthy factory lead times.
