ICS Triplex T8850C Trusted 40‑Channel 24 VDC Digital/Analog Output Field Termination Assembly

1. Electrical Specifications
   • Output Type: 40 discrete 24 VDC sourcing outputs (digital) or 0–20 mA current outputs (analog)
   • Digital Output Voltage: 19.2–30 VDC (operational); 24 VDC nominal
   • Digital Output Current: 500 mA per channel (continuous); 2 A peak (short‑duration)
   • Analog Output Range: 0–20 mA (compatible with T8480 modules)
   • Power Supply: 24 VDC redundant field power (2 independent feeds); 0.5 W per power group; 10 W maximum total power consumption
   • Isolation: 2500 VDC galvanic between channels, backplane, and field power groups
   • Response Time: < 1 ms for digital output state changes
   • Protection: Per‑group 2 A fast‑acting fuses; reverse polarity protection on field power inputs; overcurrent protection per channel
   • Line Monitoring: Real‑time open/short circuit detection for field wiring faults
2. Environmental Specifications
   • Operating Temperature: 0°C to +60°C (32°F to 140°F)
   • Storage Temperature: -25°C to +70°C (-13°F to 158°F)
   • Relative Humidity: 10%–95% (non‑condensing)
   • Shock Resistance: 30 g, 11 ms duration (per IEC 60068‑2‑27)
   • Vibration Resistance: 5 g, 10–150 Hz (per IEC 60068‑2‑6)
   • EMI/EMC Compliance: EN 61000‑6‑2 (immunity), EN 61000‑6‑4 (emissions); CE, UL certified
   • Hazardous Area Certifications: ATEX II 2G Ex ia IIC T4 Ga; IECEx IECEx Ex ia IIC T4 Ga (with external barriers)
3. Safety & Compliance
   • Safety Certification: TÜV Certified IEC 61508 SIL 3 (when paired with T8451/T8461/T8480 modules); UL 61010‑1; CSA C22.2 No. 61010‑1; CE marked
   • Fault Tolerance: 5 isolated power groups prevent cross‑group fault propagation; per‑group fuse protection
   • Mean Time Between Failures (MTBF): 1,000,000 hours (per Telcordia SR‑332, 25°C)
   • Diagnostic Coverage: 99% for field wiring faults (open/short circuit detection)
   • Safety State: Configurable fail‑safe state (de‑energized) per channel via T8451/T8461/T8480 module settings

Functional Features

1. 40 Digital/Analog Output Channels: 24 VDC digital or 0–20 mA analog outputs for SIS signal distribution.
2. 5 Independent Fused Power Groups: Isolates 8 channels per group to prevent cross‑group fault propagation.
3. IP20 Sheet‑Metal Enclosure: Protects against dust and finger contact in panel environments.
4. 2500 VDC Isolation: Protects backplane and channels from field transients/ground loops.
5. SmartSlot Compatibility: Works with T8451/T8461/T8480 modules for hot swap capability.
6. Per‑Group Fuse Protection: 2 A fast‑acting fuses for field power fault immunity.
7. Line Monitoring: Real‑time open/short circuit detection for field wiring faults.
8. Redundant Field Power: 2 independent 24 VDC feeds for power fault tolerance.
9. Front‑Panel Diagnostics: Channel/group/power/fault LEDs enable rapid troubleshooting.
10. Reverse Polarity Protection: Prevents damage from incorrect field power wiring.
11. Dual Output Compatibility: Works with T8451/T8461 digital modules or T8480 analog modules.
12. High Output Current: 500 mA continuous current per digital channel for driving field devices.
13. Wide Voltage Range: 19.2–30 VDC operational voltage for digital outputs.
14. Seamless Trusted Integration: Works with T8100/T8300 chassis for TMR signal processing.
15. Configurable Fail‑Safe States: Per‑channel safe state (de‑energized) for flexibility.

Application Scenarios

1. Oil & Gas ESD Systems: Distributes 40 digital outputs to emergency shutdown valves and alarms, with 5 power groups isolating critical zones.
2. Chemical Plant Safety Interlocks: Sends 40 analog outputs to control valves for process parameter adjustments, using line monitoring to detect wiring faults.
3. Power Generation Turbine Control: Delivers 40 digital outputs to turbine trip relays and indicators, with redundant power ensuring operation during outages.
4. Refinery Process Automation: Connects 40 analog outputs to flow control valves and level transmitters, with 2500 VDC isolation preventing ground loops.
5. Marine Offshore Platforms: Sends 40 digital outputs to fire suppression systems and emergency stop actuators, with per‑group fuses for fault immunity.
6. Mining Surface Facilities: Distributes 40 analog outputs to conveyor speed controllers and dust suppression pumps, with SmartSlot hot swap for minimal downtime.

Additional Information

• Origin: United States
• Warranty: 12‑month warranty for new original units; extended warranties via Rockwell Automation service contracts
• Compatibility: Trusted T8451/T8461 digital output modules, T8480 analog output modules, T8100 controller chassis, T8300 expander chassis
• Installation: Panel‑mount FTA; wire field devices to screw terminals; connect to T8451/T8461/T8480 module via backplane
• Maintenance: Replace fuses without system shutdown; inspect LEDs for channel/group status; no periodic calibration required
• Accessories: Trusted system software, field power distribution harnesses, backplane connector adapters, DIN rail mounting kits, external intrinsic safety barriers