Process Automation


Industrial Automation and Hazardous Locations

Hazardous locations are areas where flammable liquids, gases or vapors or combustible dust exist in sufficient quantities to produce an explosion or fire. In hazardous locations, specially designed equipment and special installation techniques must be used to protect against the explosive and flammable potential of these substances. (OSHA Publication 3073) There are three factors which have to be present in order for there to […]


Process Automation Background

 History The “Process Industry” includes the waste water treatment, food & beverage, chemical, oil & gas, and pulp & paper industries. In the past, plant operators had to physically monitor performance values and the quality of outputs to determine the best settings on which to run production equipment. Process automation simplified this with the help of sensors at thousands of spots around […]


Process Automation Basics

PROFIBUS PA ( Process Automation) was designed to work along with PROFIBUS DP (Decentralized Periphery) to make a consolidated network using DP for high-speed communications and PA for process environment. A network consists of a DP master (controller), a DP segment, a DP/PA coupler and the process network with slave devices. Fast DP controllers connected to slow PA instruments. How does […]


PA Profile for PROFINET

PA networks are designed to be operated as process  “islands” within a larger PROFIBUS DP controlled network. The total network could consist of several of these “islands” all controlled by a single PLC/DCS. Each PA “island” starts with the DP/PA coupler which acts as the PA master and consists of several PA devices on a segment. Each “island” could be […]