ABB P8403｜TMR Analog Input Module｜

Official I/O channel specifications
16 isolated 24VDC digital inputs
Collect valve position feedback, on-site dry contact switches, and equipment status signals;
8-channel universal isolated analog input (software free configuration, no hardware jumper required)
Support signal types: 4-20mA, 0-20mA, ± 10V voltage, thermocouple (J/K/T/E), Pt100/Pt1000 thermistor.
Official Core Security Features
SIL2 functional safety certification IEC 61508
Through T Ü V third-party certification, the average probability of dangerous failure in the safety circuit PFDavg is 4.2 × 10 ⁻ ³, which meets the SIS safety circuit standards for petrochemical and thermal power industries;
Triple module redundant TMR 2oo3 voting architecture
Hardware three channel independent operation, single point channel/module failure does not cause safety system shutdown;
Full channel independent electrical isolation
Single channel 1500V AC voltage isolation eliminates ground loop interference and is suitable for industrial sites with long cables and strong electromagnetic interference;
Full channel hardware self diagnosis
Real time detection of signal disconnection, short circuit, over range, module power supply abnormality, fault code uploaded to P8151B communication processor and upper 800xA;
Support online hot swapping
Under non-stop operating conditions, the faulty module can be replaced separately, and the hardware isolation of the fault channel does not interfere with the operation of the entire safety system.