The Honeywell FC-SDI-1624 (FCSDI1624) functions as a high-integrity Digital Input Module for Honeywell Fail-Safe Control (FSC) and Safety Manager systems. This module provides 16 independent 24 VDC input channels designed to interface with critical field devices including emergency stop buttons, flame detectors, and limit switches. By utilizing a 32-bit internal diagnostic architecture, the FC-SDI-1624 ensures that the safety logic solver receives accurate, real-time data from the field. It serves as a cornerstone for Safety Instrumented Systems (SIS), providing the ruggedness and precision required for offshore platforms, chemical plants, and refineries.
| Feature | Professional Specification |
| Model Number | FC-SDI-1624 / FCSDI1624 |
| Input Channels | 16 Independent Safe Digital Inputs |
| Nominal Voltage | 24 VDC |
| Response Time | $\leq 10$ ms |
| Safety Integrity | SIL 3 Capable (IEC 61508) |
| Current Draw | 7 mA per channel (Input); 110 mA (Backplane) |
| Operating Temp | –40 °C to +70 °C (–40 °F to +158 °F) |
| Isolation | Channel-to-Channel and Channel-to-System |
| Diagnostics | Open Circuit, Short Circuit, Signal Integrity |
| Shipping Weight | 2.0 kg (4.4 lbs) |
The FC-SDI-1624 solves critical industrial safety challenges through advanced diagnostic hardware:
SIL 3 Certified Determinism: This module meets the stringent IEC 61508 SIL 3 standards. It executes internal self-test routines continuously to verify hardware integrity, ensuring the safety loop remains active and reliable even in high-demand scenarios.
Rapid Fault Detection: The module incorporates comprehensive line monitoring. It immediately identifies field wiring discrepancies, such as open circuits or short circuits, and reports these faults to the Safety Manager to prevent hazardous undetected states.
Extreme Climate Resilience: Engineered for harsh environments, the FC-SDI-1624 operates across a wide temperature range of –40 °C to +70 °C. This thermal durability makes it suitable for unconditioned remote instrument enclosures (RIEs) in both arctic and desert conditions.
High-Speed Signal Acquisition: With a response time of 10 ms or less, the module facilitates near-instantaneous emergency shutdowns. This speed proves vital in protecting high-speed rotating equipment and preventing rapid pressure excursions in process vessels.
Is the Honeywell FC-SDI-1624 100% Brand New?
Yes. We supply the FC-SDI-1624 in 100% Brand New and Original condition. Each module ships in its original Honeywell factory packaging, ensuring the unit meets all factory calibration and safety certification standards.
Does this module support line monitoring for field devices?
Yes. The FC-SDI-1624 performs continuous line monitoring to detect both short circuits and open circuits in the field wiring. This ensures that a broken wire to an E-Stop button triggers a safety alert rather than leaving the system in an unprotected state.
What safety systems are compatible with the FC-SDI-1624?
The FC-SDI-1624 integrates directly with Honeywell Safety Manager and Honeywell Fail-Safe Control (FSC) systems. It installs into the standard system rack and draws power directly from the backplane, minimizing the need for external power distribution hardware.
Can I use this module for high-temperature offshore applications?
Absolutely. The module's design specifically targets the oil and gas and petrochemical industries. Its –40 °C to +70 °C operating range and channel-to-channel isolation provide the robustness required for offshore platforms where electrical noise and ambient heat are common.
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