Unlike the remaining units, PLC D forced a shutdown when a 2-cycle, 78%-of-nominal (or less) voltage sag occurred. This PLC shuts down based on the AC input voltage. Denoted as CPU failure, this ...

PLC Basics and Voltage Sag Susceptibilities Fig. 2 shows a typical PLC I/O rack with a power supply, CPU, discrete input and output modules, and analog input and output modules. The following sections ...

Silicon Labs' new Si838x isolator family offers the industry’s first high-speed, multi-channel digital isolators designed to meet the demands of progr ...

Model NT2140 discrete AC power input modules have joined the BusWorks NT2000 Ethernet remote I/O family, and can sense on/off ...