Honeywell FC-SAO-0220M Safe Analog Output Module

Product Description:

The Honeywell FC-SAO-0220M is a high-integrity Safe Analog Output Module designed for use with Honeywell’s Safety Manager and Safety Manager SC systems (formerly Fail-Safe Control / FSC). As part of a Safety Instrumented System (SIS), it is certified for use in safety loops up to SIL 3 according to IEC 61508, providing precise and reliable control for applications that require modulating output signals.

This module offers 2 independent analog output channels with a 4–20 mA signal, making it ideal for controlling final control elements such as modulating control valves or variable speed drives in safety-critical environments. The FC-SAO-0220M includes extensive internal diagnostics to ensure output integrity and to drive the output to a pre-defined Safe State in case of discrepancies.

Key Features:

• SIL 3 Certification: Fully certified for use in SIL 3 safety loops, ensuring compliance with industry safety standards.

• Precise Output Control: Provides 4–20 mA analog output with a 12-bit resolution and ±0.1% accuracy, ensuring accurate control of safety-critical systems.

• Safe State Protection: Configurable fail-safe behavior for output channels, including 0 mA, < 3.6 mA, or Hold Last Value to prevent unsafe operations.

• High Availability: Supports redundant configurations (1oo2), allowing continuous operation even if one module fails.

• Hot-Swappable: Designed for online replacement, enabling maintenance without disrupting the safety system.

• HART Compatibility: Often supports HART pass-through, allowing communication with smart field instruments for enhanced diagnostics and maintenance.

• Corrosion Protection: Features a G3 conformal coating, ensuring durability in harsh industrial environments like oil rigs and chemical refineries.

Technical Specifications:

Application Areas:

The FC-SAO-0220M is ideal for use in industries where precise analog output control is essential for safety-critical operations, including:

• Oil & Gas

• Chemical Processing

• Petrochemical

• Power Generation

• Refining

FAQ:

Q: What is the maximum load impedance supported by the FC-SAO-0220M?
A: The module can support loads up to 600Ω at 24V DC.

Q: How does the module ensure safety in case of discrepancies in the output signal?
A: The module continuously monitors the output current and can drive the output to a pre-defined Safe State if the read-back value deviates beyond the acceptable tolerance.

Q: Can the module be replaced without shutting down the system?
A: Yes, the FC-SAO-0220M is hot-swappable, allowing safe replacement while the system remains operational.