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Product Overview
The Honeywell FS-SDOL-0424 functions as a high-integrity digital output module for the Safety Manager and FSC (Fail-Safe Controller) safety systems. This module provides four independent current-monitored output channels for critical safety shutdown applications . Moreover, the FS-SDOL-0424 drives final control elements such as solenoid valves, pilot relays, and alarm indicators with fail-safe reliability.
Technical Specifications
The FS-SDOL-0424 operates with field load voltage ranges of 24 V DC or 48 V DC, configurable for different application requirements . This module delivers a maximum continuous load current of 2 A per channel for 24 V DC configurations . Additionally, the unit offers continuous output current monitoring up to 2.8 A with an adjustable trip threshold range of 0.04 A to 2.8 A via the FS-BSDOL-04UNI Range Setting Module.
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Output Channels | 4 current-monitored |
| Field Load Voltage (Rated) | 24 V DC or 48 V DC |
| Continuous Load Current (24V) | 2 A maximum per channel |
| Continuous Load Current (48V) | 1 A maximum per channel |
| Peak Load Current | 4 A maximum |
| Monitoring Range | 0.04 – 2.8 A (adjustable) |
| Off-State Leakage Current | <0.04 mA |
| Output Load Type | Resistive and inductive (with surge suppression) |
| Power Supply (Module Logic) | 5 V DC @ 300 mA / 24 V DC @ 250 mA |
| Space Requirements | 4 TE, 3 HE (4 HP, 3U) |
| Weight | 0.16 kg |
| Operating Temperature | –20°C to +85°C |
| Approvals | CE, TÜV, UL, CSA, FM |
Key Design Features
The FS-SDOL-0424 employs active current monitoring on each channel to detect wire breaks, short circuits, and open loads . This module automatically switches outputs to a predefined safe state (de-energized) upon fault detection or watchdog timeout . Additionally, the unit supports parallel connection of two channels to achieve up to 4 A output current for demanding loads. The module requires the FS-BSDOL-04UNI Range Setting Module for adjusting current trip thresholds and enabling/unused channel configuration.
Application and Integration
The FS-SDOL-0424 integrates seamlessly with Honeywell Safety Manager, Experion PKS, and FSC systems in safety instrumented functions (SIF) . System engineers commonly deploy this module in emergency shutdown (ESD) systems, burner management systems (BMS), and fire & gas (F&G) detection systems . Consequently, it plays a critical role in oil and gas, chemical processing, and power generation facilities where high-integrity digital actuation is paramount.