Honeywell FC-TSRO-0824 SIL3 Safety FTA

SIL3 Safe Dry Digital Output FTA with 8 Relay Channels

The Honeywell FC-TSRO-0824 and FS-TSRO-0824 provide eight potential-free relay outputs for SIL3 safety applications.

Safety Architecture

• Designed for SIL3 applications per IEC 61508 without requiring fault exclusions
• Eight independent output channels with three relays per channel for high integrity
• Each channel includes fused normally open field contact and status indication LED
• Capable of switching 115/230 V AC loads, providing AC output capability for Safety Manager

Channel Configuration

• Three relays per output channel for redundant safety switching
• Fused NO field contact rated at 5 A with slow-acting fuse
• LED indicator shows energized relay state for each channel
• Screw terminal interface for external field wiring

Technical Specifications

• Brand: Honeywell
• Models: FC-TSRO-0824, FS-TSRO-0824
• Approvals: CE, UL, TUV, CSA
• Safety class: Up to and including SIL3
• Input voltage: 24 V DC nominal, 36 V DC max
• Relay pick-up voltage: 19.2 V DC
• Input current: 40 mA typical at 24 V DC

Output Specifications

• Number of channels: 8
• Max output current: 5 A (fused)
• Min output current: 1 mA at 5 V
• Max output voltage: 250 V AC / 250 V DC
• Max switched load: 1250 VA / 150 W

Relay Contact Ratings

• 250 V AC: 5 A
• 24 V DC: 5 A
• 48 V DC: 1 A
• 110 V DC: 500 mA
• Max switching frequency: 20 Hz
• Contact material: Gold flash over silver alloy

Fuse Specifications

• Fuse rating: 5 A, 5x20 mm
• Voltage rating AC: 250 V
• Voltage rating DC: 150 V
• Manufacturer: Schurter
• Manufacturer PN: 0001.2511

Isolation Ratings

• Coil to contact: 4000 V AC
• Contact to contact: 1200 V AC

Physical Dimensions

• Module dimensions: 300 × 70 × 60 mm (11.81 × 2.76 × 2.36 in)
• DIN rail compatibility: TS32 / TS35 × 7.5
• Required rail length: 301 mm (11.85 in)

Wiring Termination

• Screw terminals: Max wire diameter 2.5 mm² (AWG 14)
• Strip length: 7 mm (0.28 in)
• Tightening torque: 0.5 Nm (0.37 ft.-lb.)

Environmental

• Ambient temperature: -5°C to +60°C (23°F to 140°F)

Installation & Packaging

• DIN rail mount with TS32/TS35 compatibility
• Includes module with screw terminals
• Ready for field wiring termination
• Shipping: FedEx, UPS, DHL worldwide

FAQ

• Q: What is the difference between FC-TSRO-0824 and FS-TSRO-0824?
  A: Both models provide identical SIL3 functionality. FC-TSRO-0824 includes conformal coating for harsh environments, while FS-TSRO-0824 is the standard version.
• Q: Can this module switch 230 V AC loads directly?
  A: Yes. The TSRO-0824 supports 250 V AC switching at up to 5 A, making it ideal for direct 115/230 V AC load control in SIL3 applications.
• Q: Why does each channel use three relays?
  A: The three-relay configuration provides redundant safety paths and enables SIL3 compliance without fault exclusions. This architecture ensures safe de-energizing even if one relay fails.