Honeywell FC-SCNT02 SC S300 Safety Controller

Description

The Honeywell FC-SCNT02 is a Safety Manager SC S300 Safety Controller designed for Honeywell's Safety Manager SC platform. It serves as the central processing module for SIL 3 safety applications, providing the logic execution and system control required for emergency shutdown (ESD), Safety Instrumented Systems (SIS), fire and gas protection, burner management, and other critical process safety functions. The FC-SCNT02 is based on Honeywell's proven QMR (2oo4D) architecture and supports the modular Safety Manager SC platform, which features Universal Safety I/O, offline simulation, and scalable system configurations for distributed safety applications. Compared with the earlier FC-SCNT01 controller, the FC-SCNT02 provides increased memory capacity and supports the DNP3 outstation protocol introduced with Safety Manager SC Release R212.1. It is fully pin-to-pin and backward compatible with the FC-SCNT01, allowing online replacement without interrupting system operation, and can operate in redundant controller configurations with existing FC-SCNT01 modules. The controller is supported by Safety Manager SC Release R200.2 and later, enabling straightforward upgrades while maintaining compatibility with existing Safety Manager SC installations.

Parameter

Model: FC-SCNT02 SC S300 Safety Controller
Operating Input Voltage: 24 V DC (Typical), Range: 18 V DC to 30 V DC via backplane
Power Consumption: Approx. 15 W to 20 W (Module isolated load)
Protocol Availability: Modbus TCP/IP, Modbus RTU, DNP3 Outstation Protocol
Backward Compatibility: 100% pin-to-pin drop-in replacement for FC-SCNT01
Operating Temperature: -5 °C to +70 °C (+23 °F to +158 °F)
Storage Temperature: -40 °C to +85 °C (-40 °F to +185 °F)
Relative Humidity: 5% to 95%, non-condensing
Mechanical Protection: G3 Conformal Coating (Standard for harsh chemical/gas environments)

Frequently asked questions

Q:What is the Honeywell FC-SCNT02 used for?
A:The Honeywell FC-SCNT02 is an SC S300 Safety Controller for the Safety Manager SC platform. It performs safety logic processing for Safety Instrumented Systems (SIS), Emergency Shutdown (ESD), Fire & Gas, Burner Management, and other critical safety applications.

Q:What improvements does the FC-SCNT02 offer over the FC-SCNT01?
A:The FC-SCNT02 provides increased memory capacity and adds support for the DNP3 outstation protocol introduced with Safety Manager SC Release R212.1. It replaces the FC-SCNT01 while maintaining backward compatibility.

Q:What safety integrity level does the FC-SCNT02 support?
A:As part of the Safety Manager SC platform, the FC-SCNT02 is designed for applications up to SIL 3 and is based on Honeywell's proven QMR (2oo4D) fault-tolerant architecture.

Application areas

The Honeywell FC-SCNT02 is a SIL 3-certified Quadruple Modular Redundancy (QMR) safety controller module, its primary application areas include:

• Industrial Boilers & Furnaces: Managing safe furnace purging, pilot ignition sequences, main flame verification, and fuel-shutoff valve interlocks.
• Chemical Reactors: Providing high-speed safety interlocks to isolate chemical feeds when pressure limits are breached.
• Power Plant Steam Generators: Ensuring multi-fuel (gas, oil, coal) burner configurations fail safely upon flame loss or low air draft.

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