Product Details：Honeywell 51204170175 (51204170-175, MC-TAIH23) is the upgraded universal high-level analog input module of Honeywell Experion PKS UCN I/O series, which is developed on the basis of MC-TAIH22. It communicates with the C300 redundant controller through UCN bus protocol, and supports multiple types of field analog signals including 4-20mA current signal, DC voltage signal, RTD resistance signal and thermocouple millivolt signal. It can be connected with pressure transmitters, flow transmitters, temperature sensors and other field instruments at the same time, which is suitable for process control cabinets with mixed signal points and can reduce the type of I/O cards in the cabinet. The PCB surface adopts conformal coating protection, which can resist moisture, salt mist and corrosive gas in harsh environments such as chemical plants and offshore platforms, and effectively reduce the risk of circuit corrosion and short circuit. Each channel is equipped with independent isolation circuit, low-pass filtering and surge suppression components, which can filter high-frequency noise and transient pulse interference introduced by long-distance field cables, isolate abnormal voltage impact from the field side, and protect the backplane and controller mainboard from damage. The module has built-in comprehensive channel self-diagnosis function, which can detect loop open circuit, signal loss, over-range and communication timeout faults, and upload alarm information to the Experion operation station for maintenance personnel to quickly locate abnormal measuring points. It supports hot swap operation under lockout-tagout maintenance procedures, maintenance personnel can replace the faulty module directly without cutting off the power supply of the whole cabinet, minimizing the shutdown risk of critical continuous process loops. It complies with Honeywell UCN bus communication protocol, and needs to be matched with MC-TAIH23 FTA termination assembly and MU-KFTS series shielded FTA cable to form a complete multi-signal analog acquisition subsystem. It is a key spare I/O card for Honeywell Experion PKS DCS mixed measurement point reconstruction, cabinet space optimization and harsh environment system upgrade projects, widely used in petrochemical, chemical, power and water treatment process monitoring occasions.

Key specifications：MC-TAIH23 UCN universal analog input module for Honeywell Experion PKS,24VDC auxiliary power supply,multi-signal compatible input,built-in channel self-diagnosis and fault alarm,conformal coated PCB,UCN bus compatible,supports hot swap. Operating temperature range is -10°C to +60°C. It supports channel signal type switching test, communication handshake inspection and over-range alarm verification during maintenance troubleshooting.

This universal high level analog input module is widely deployed in petrochemical,chemical,power generation and water treatment plants for Honeywell Experion PKS DCS mixed analog signal centralized acquisition,old single-function AI card replacement and spare stocking projects. It cooperates with Honeywell C300 redundant controller,redundant UCN network and matched FTA termination board to build flexible multi-variable process measurement architecture. As a core unit for MC-TAIH23 coated universal AI card and mixed field instrument signal acquisition carrier,it is the multi-purpose upgraded UCN analog input module for Experion PKS process control cabinet. Clearly marked channel terminals simplify field instrument wiring,signal type configuration and regular coating aging inspection work for control engineers.