Allen-Bradley 1746-NR8 RTD/Resistance Input Module

Description

The Allen-Bradley 1746-NR8 RTD/Resistance Input Module is a specialized input component designed for industrial control systems, part of the 1746 product series. It supports RTD and resistance-based signal inputs, making it suitable for temperature and resistance monitoring applications in automated environments. Key power and current specifications include a total backplane power draw of 1.82W, broken down into 0.5W at 5V DC and 1.32W at 24V DC; corresponding backplane current consumption is 100mA at 5V DC and 55mA at 24V DC. The module features a common mode voltage of +/-1 volt, with an overload current rating of +/-5 mA and +/-5 volts DC. For electrical isolation, it maintains continuous 5V DC isolation between channels, and 500V AC continuous isolation for 1 minute between inputs and backplane, as well as between inputs and chassis ground. Operating environmental parameters include a working temperature range of 32 to 140 degrees Fahrenheit, a storage temperature range of -40 to 185 degrees Fahrenheit, and non-condensing relative humidity tolerance of 5 to 95 percent, ensuring reliable performance in diverse industrial conditions.