Product Description:
The AI2351 (2351) is a high-precision Analog Input Module for the Tricon Triple Modular Redundant (TMR) safety system. It features 16 isolated differential channels that convert field signals into digital data for the controller, ensuring reliability and safety in Emergency Shutdown (ESD) and Fire and Gas (F&G) applications. With continuous monitoring and support for various signal types, the AI2351 is ideal for high-reliability industrial environments.

Technical Specifications:

• Model Number: AI2351 / 2351

• Input Channels: 16 Isolated Analog Channels

• Signal Ranges: ±10 VDC, 0–10 VDC, 4–20 mA 

• A/D Resolution: 16-bit

• Accuracy: < ±0.1% of Full Scale 

• Redundancy: Triple Modular Redundant (TMR)

• Temperature Rating: -40°C to +70°C 

• Input Impedance: > 10 MΩ (Voltage mode)

• Update Rate: 25 ms

• Status Indicators: Pass, Fault, Active, Load, Point Status LEDs

Applications:

• Petrochemical Refining: Monitoring critical pressure and temperature.

• Power Generation: Feedback for turbine control and burner management.

• Chemical Processing: SIL-3 compliant level and flow measurement.

FAQ:

Q: Does the AI2351 require special termination for 4-20mA signals?
A: Yes, an external shunt resistor is needed for current signals.

Q: Can this module be hot-swapped?
A: Yes, it supports online replacement without affecting the active safety logic.