The Honeywell FC-SDO-1624 is a high-integrity Safe Digital Output module engineered for the Honeywell Fail-Safe Control (FSC) and Safety Manager systems. This module provides 16 independent 24 VDC fail-safe channels, serving as the critical link between safety logic and field-mounted final elements. Designed with a high-density footprint, the FC-SDO-1624 allows for extensive control of solenoid valves, emergency shutdown (ESD) relays, and visual/audible alarms within a single rack slot, optimizing cabinet space without compromising safety integrity.
Built to meet the stringent requirements of IEC 61508, the FC-SDO-1624 is certified for use in SIL 3 safety instrumented systems (SIS). The module features an advanced diagnostic suite that continuously monitors for field-side anomalies, including short-circuit and open-circuit (line breakage) detection. To ensure the highest level of trust, an integrated hardware watchdog monitors internal processor health; in the event of any discrepancy, the outputs are automatically de-energized to their predetermined safe state. With a wide operating temperature range of –40 °C to +70 °C, it is purpose-built for the most demanding environments in offshore oil platforms, petrochemical refineries, and power generation facilities.
| Feature | Specification Details |
| Manufacturer | Honeywell |
| Model Number | FC-SDO-1624 |
| Product Series | Fail-Safe Control (FSC) / Safety Manager |
| Module Type | Safe Digital Output (DO) |
| Input Voltage | 24 VDC (Nominal) |
| Number of Channels | 16 Channels |
| Current per Channel | Up to 1 A (Load dependent) |
| Safety Integrity Level | SIL 3 Capable (IEC 61508) |
| Response Time | High-speed safety execution |
| Diagnostics | Short circuit, open circuit, watchdog monitoring |
| Operating Temperature | –40 °C to +70 °C |
| Isolation | Channel-to-system isolation |
| Installation | Rack-mounted in FSC/Safety Manager chassis |
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