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The Honeywell FS-SDO-0824 is a high-performance, safety-rated 8-channel digital output module, engineered for demanding applications in safety instrumented systems (SIS). Part of the FS Series, this module is designed for 24V DC output systems, with fail-safe functionality and comprehensive diagnostics to meet stringent safety integrity level (SIL) requirements.
With an output capacity of 0.5 A per channel, this module is ideal for driving actuators, solenoids, lamps, and indicators in critical process environments. The FS-SDO-0824 offers exceptional durability, real-time fault detection, and seamless integration into safety PLCs and safety logic controllers, making it a dependable choice for industrial automation.
| Parameter | Specification |
|---|---|
| Model | FS-SDO-0824 |
| Number of Output Channels | 8 (independent, fail-safe) |
| Output Type | Solid-state (digital) |
| Output Voltage | 24 V DC |
| Max Output Current | 0.5 A per channel |
| Voltage Drop (Max) | < 2 V at 0.5 A |
| Short Circuit Protection | Yes |
| Diagnostic Coverage | Open load, short circuit, watchdog |
| Output Response Time | < 1 ms |
| Watchdog Current | 5 mA nominal |
| Load Capacitance Limit | ≤ 1 µF per output |
| Electrical Isolation | Channel-to-channel & system-level isolation |
| Operating Temperature | -40°C to +85°C |
| Mounting | DIN rail or system rack |
| Certifications | CE, SIL-rated, TÜV, UL |
| Dimensions (L × W × H) | 160 mm × 85 mm × 40 mm |
| Weight | 0.72 kg |
Emergency shutdown systems (ESD)
Burner management systems (BMS)
Process plant safety controllers
Distributed safety architectures
Valve actuator controls in oil, gas, and chemical industries
Fail-Safe Operation: Outputs switch to a safe state on system failure or power loss.
Solid-State Switching: Ensures high durability, fast switching, and resistance to wear.
Channel-Level Isolation: Enhances safety by protecting each output from faults on others.
High Diagnostic Integrity: Integrated fault detection ensures reliability and quick troubleshooting.
Wide Environmental Tolerance: Designed to operate in extremely harsh industrial conditions.
Brand: Honeywell
Series: FS Series (Field Safety)
Product Category: Safety Digital Output Modules (SDO)
| Model | Output Voltage | Channels | Max Current / Ch | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| FS-SDO-0824 | 24 V DC | 8 | 0.5 A | 160 × 85 × 40 | 0.72 |
| FS-SDO-0424 | 24 V DC | 4 | 2.0 A | 150 × 80 × 35 | 0.62 |
| FS-SDO-04110 | 110 V DC | 4 | 0.325 A | 150 × 80 × 35 | 0.68 |
| FS-SDO-0448 | 48 V DC | 4 | 0.75 A | 150 × 80 × 35 | 0.65 |
| FS-SDOL-0424 | 24 V DC | 4 | 1.0 A | 150 × 80 × 35 | 0.66 |
| Model | Function | Voltage | Channels | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| FS-RO-1024 | Relay Output | 24 V / 250 V AC | 10 | 120 × 90 × 45 | 0.55 |
| FS-PSU-UNI2450U | Power Supply | 24 V / 5 A | – | 120 × 80 × 50 | 0.60 |
| FS-SAI-0410 | Safe Analog Input | ±10 V / 4–20 mA | 4 | 150 × 80 × 35 | 0.58 |
| FS-PDC-MB24-2 | Power Distribution | 24 V DC | – | 130 × 80 × 38 | 0.50 |
| FS-SDO-0424 | Digital Output | 24 V DC | 4 | 150 × 80 × 35 | 0.62 |
Q1: What is the primary function of the FS-SDO-0824?
A1: It provides 8 independent, fail-safe digital outputs for controlling safety-critical field devices.
Q2: Does it support short-circuit protection?
A2: Yes, each channel includes built-in short-circuit protection and diagnostics.
Q3: Can I use this module for SIL3 systems?
A3: Yes, it meets the safety requirements for SIL2/SIL3 applications depending on system design.
Q4: How does it behave on watchdog failure?
A4: The outputs are immediately forced into a safe state to ensure system integrity.
Q5: Can this module drive solenoids or indicator lamps?
A5: Yes, provided they operate within the specified voltage and current limits.
Q6: Is there electrical isolation between channels?
A6: Yes, each channel is galvanically isolated for safety and fault containment.
Q7: What happens if the load is disconnected?
A7: The module detects an open load condition and flags it through diagnostics.
Q8: What controller systems is it compatible with?
A8: It integrates with safety PLCs and distributed safety control systems in the FS series.
Q9: How is it mounted in the cabinet?
A9: It can be mounted on a standard DIN rail or in an FS system rack.
Q10: Does it require separate power for logic and output?
A10: Yes, logic (5 V) and output (24 V) power supplies must be correctly wired.