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Honeywell FC-TSDO-0824
Product Name: SIL 2 Safety Digital Output Module (Safe Digital Output FTA)
Product Overview: The FC-TSDO-0824 is a high-reliability safety digital output module developed for Honeywell Safety Manager and Experion PKS platforms. It forms the final execution layer in industrial safety instrumented systems (SIS), driving emergency shutdown valves, contactors, and alarm devices.
Detailed content
Technical Specifications:
- Product Category: Safety Digital Output Module / FTA
- Number of Channels: 8 (galvanically isolated)
- Output Type: Relay changeover contacts (1 NO + 1 NC), 250 V AC / 30 V DC
- Maximum Switching Current: 5 A per channel (resistive load)
- Maximum Continuous Current: 1.5 A per channel (FTA configuration, 24 V DC systems)
- Maximum Voltage: 36 V DC (IEC 1010, Overvoltage Category 3)
- Safety Integrity Level: SIL 2 (per IEC 61508); SIL 2/3 certified
- Channel Isolation: 3 kV AC (channel-to-channel and channel-to-backplane)
- Response Time: ≤ 10 ms
- Operating Voltage: 24 V DC ±15%
- Power Consumption: ≤ 12 W (max); 5 mA per channel plus load
- Operating Temperature: -40 °C to +70 °C
- Dimensions: 130 × 100 × 75 mm (module) / 60 × 70 × 58 mm (FTA body)
- Protection Rating: IP20
- Mounting: 35 mm DIN rail (TS32 / TS35 × 7.5)
- Terminal Type: Screw terminals, max. wire 2.5 mm² (AWG 14), torque 0.5 Nm
- Certifications: IEC 61508, ATEX, IECEx, UL 508, CE, TÜV, CSA, FM
- Hazardous Location Rating: Class I, Division 2
Structural Features:
- Redundant relay drivers with built-in self-diagnostics (99% fault coverage)
- Contact wear monitoring detects welded contacts and open circuits
- Conformal coating option for IEC 60664-3 Type A pollution degree 1 environments
Working Principle: The module receives de-energize/energize commands from the safety controller, drives the isolated relay channels, and continuously performs self-diagnostics. Upon detecting a fault, it immediately raises an alert without compromising the safety loop.
Application Scenarios: Emergency Shutdown Systems (ESD), gas detection interlocks, fire and gas (F&G) systems, machine safety interlocks on production lines, and safety shutdown of rotating equipment.
Installation Requirements: Mount on standard DIN rail inside a suitably rated enclosure. Use appropriately sized wiring and apply the specified 0.5 Nm torque to screw terminals. Verify hazardous area classification compliance before installation.
Usage Notes: Never install in a 50 Ω system if 75 Ω termination is expected elsewhere in the loop. Regularly test relay contact integrity in safety loops per the site’s SIL proof-test interval.
