ABB P8151B｜TMR Analog Input｜

Function
Triple module redundant TMR secure computation
Adopting a 2oo3 two out of three voting logic, a single point of failure does not cause system shutdown and meets the IEC 61508 SIL2 safety level. It is used for high safety conditions such as ESD emergency shutdown, fire and gas monitoring, etc.
System Communication Transfer and Protocol Conversion
As a communication bridge between the Plantguard safety rack and the upper 800xA DCS, it supports protocols such as Modbus TCP/RTU and Profibus, and enables bidirectional transmission of safety system alarms, interlocks, real-time measurement data, and control automation.
Analog/digital signal acquisition and processing
Compatible with 4-20mA, thermocouple, thermistor temperature/pressure/flow sensor signal acquisition; Built in wire breakage detection, cold end compensation, and channel fault diagnosis functions RS Modules.
Hot swappable online maintenance
Support non-stop module insertion and replacement, built-in fault isolation mechanism, fault channels will not interfere with the operation of the entire safety system CSDN Bo .
Parameter
Power supply: DC24V ± 10%, overall power consumption ≤ 3W, rack backplane powered by RS Modules
Signal specifications
Analog input: 4-20mA, 0-10V, Pt100, K/J/T/S/R/B type thermocouple
Conversion accuracy: 16 bit A/D, full range accuracy ± 0.01%, single channel sampling 10msRS Modules
isolation protection
Channel ↔ Backboard: 1kV AC isolation
Channel to ground: 500V AC isolation, anti site strong electromagnetic interference RS modules
environmental conditions
Working temperature: -25 ℃~+60 ℃
Storage temperature: -40 ℃~+85 ℃
Protection level: IP20 (DIN rack installation inside control cabinet) RS Modules
Certification: SIL2, CE, UL, ATEX Zone2 Explosion proof Certification RS Modules
Industry
Petrochemical/offshore platforms: SIS safety interlock, ESD emergency shutdown, fire and gas detection system
Thermal power generation/gas turbine: unit protection, boiler furnace safety monitoring
Coal chemical industry, oil and gas refining: safety monitoring and interlock protection for reaction vessels and heating furnaces fy module