A modern PLC manufactured by Siemens appears in this next photograph, an S7-300, which is a different design of modular PLC. Instead of individual cards plugging into a rack, this modular PLC design uses individual modules plugging into each other on their sides to form a wider unit: Article from Lessons In Industrial Instrumentation by … Read more
A newer model of PLC manufactured by Allen-Bradley is the SLC 500 series (often verbally referred to as the “Slick 500”), which is also modular in design like the older PLC-5 system, although the racks and modules of the SLC 500 design are more compact. The SLC 500 rack shown in the next photograph has … Read more
The photograph below shows an Allen-Bradley (Rockwell) PLC-5 system, used to monitor and control the operation of a large natural gas compressor. Two racks appear in this first photograph, with different types of I/O cards plugged into each rack: Like the Siemens 505 PLC seen previously, this Allen-Bradley PLC-5 system is fully modular and configurable. … Read more
An industrial control panel is an assembly of different electrical and electronics components. An Industrial control panel is intended to control different electrical machines, mechanical devices, and mechanisms. Given below is the list of some components that are employed in industrial control panels: Enclosure & Mounting assembly Overload relays Disconnect switches Circuit breakers Control relays … Read more