Honeywell FC-SDOL-0424 Digital Output Module

Product Description

The FC-SDOL-0424 is a high-integrity Digital Output (DO) module designed for the Honeywell Safety Manager system. This module provides four loop-monitored output channels, enabling safe and reliable control of field devices such as solenoids, valves, and motor starters.

The “SDOL” designation (Safe Digital Output with Loop-monitoring) indicates its ability to continuously verify the integrity of wiring and the connected load—even when the output is inactive. With a compact 4TE width, this module is ideal for high-density safety racks and carries SIL certification along with global approvals (TUV, UL, FM), making it suitable for Emergency Shutdown (ESD) and Fire & Gas (F&G) applications.

Technical Specifications

Key Safety and Monitoring Features

• Loop Monitoring: Continuously verifies field wiring status (open or short circuit) to ensure reliable actuation.

• Overload Detection: Protects both module and field wiring from overcurrent conditions.

• Watchdog (WDG) Integration: Supports system-level logic solver monitoring via a 4 mA input.

• Cold Resistance Sensing: Handles high inrush currents from solenoids or filament lamps without false trips.

Technical FAQ

What is the benefit of loop monitoring in the FC-SDOL-0424?
Loop monitoring allows the system to detect wiring faults or load failures while the output is inactive, enabling proactive maintenance and preventing failures during critical operations.

Does this module require a range-setting module?
Yes. For precise current sensing and to prevent false lead-break alarms, the FC-SDOL-0424 is typically paired with a range-setting module like the FC-BSDOL-04UNI for proper calibration of connected field devices.