Honeywell FC-SDO-0824

Product Name: Honeywell Safety Manager Series Fail-Safe Digital Output (SDO) Module, Model FC-SDO-0824
Product Introduction: This is a certified safety-rated digital output module designed for Honeywell Safety Manager (Experion PKS SCS / FSC) systems. It executes safety logic decisions by switching 24 VDC field loads such as solenoids, alarms, and pilot valves. On loss of communication or internal fault, outputs revert to a predefined safe state (de-energized).

Category: Honeywell

Description

Key Features:
- 8 independent solid-state source-type (PNP) output channels, 24 VDC
- Per-channel current up to 0.5 A (some variants 0.55 A / 13 W load); module total typically 2.0 A
- SIL 3 certified per IEC 61508; TÜV approved; supports 1oo2 / 2oo3 voting in TMR architecture
- Integrated suppression diode on each channel for inductive load protection
- Continuous onboard diagnostics — open-circuit, short-to-ground, short-to-supply, and load-current deviation detection (>99% diagnostic coverage)
- Watchdog timer forces fail-safe deactivation if valid telegram not received
- Hot-swappable in rack; LED per channel + module-level RUN/FAULT/ACTIVE
Performance Parameters:
- Operating Voltage: 24 VDC (via rack backplane, typical range 18–32 VDC)
- Response Time: < 20 ms (logic solve to output action)
- Switching Frequency: up to ~250 kHz rated for diagnostics; practical load switching slower
- Operating Temp: -20 °C to +70 °C (some references -40 °C to +70 °C)
- Humidity: 5 %–95 % RH non-condensing
- Isolation: Channel-to-channel and channel-to-system galvanic isolation
- Certifications: SIL 3 (IEC 61508), EN 61511, FM Cl. I Div. 2, ATEX/IECEx optional
Structure & Material: Metal/ABS housing with DIN-rail or rack-backplane mount; gold-plated contacts on removable terminal block base (FC-T08 / FC-T16 series)
Installation & Notes:
- Insert into dedicated Safety Manager I/O slot; ensure correct terminal base is fitted
- Use properly sized flyback diodes for inductive loads > 13 W or rely on integrated suppression
- Do NOT exceed 0.5 A per channel; observe total module current derating
- Verify SIL architecture before deployment in ESD / F&G loops

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