At a plant or job site, Remote I/O installation processes happen in many phases. At times, certain equipment and bus communication lines may not be available from the early stages that would allow a user to configure and set up some of the controllers or Remote I/O modules.
It’s no secret that in today’s business world, we must be willing to use the latest technology if we want to maximize our growth potential and stay ahead of the competition. One such promising technology is virtualization.
You may have heard the term before, but you may not know what exactly virtualization is or the benefits it provides. And that’s why I am going to share a brief overview of this innovative technology that we here at Pepperl+Fuchs believe in.
Virtualization gives you the ability to store all of your software and data on a single server outside of a hazardous area even when this server is connected to a thin client or group of thin clients that can be located inside a hazardous area. If a thin client in the hazardous area is damaged, your information is still secure and you can easily replace the damaged thin client. The illustration below shows a virtualized hardware system in which one thin client is outside the network, two thin clients are in good working condition inside the network, and another thin client is damaged with no adverse effect on the information it has gathered.
WirelessHART antennas, integrating WirelessHART equipment from other manufacturers...
Are you ready to learn more about WirelessHART? This is our third installment of Ask an Expert, and our first episode to focus on WirelessHART. Basically, we sit down with a product expert and answer questions from customers like you.
Why use the software for our PCV linear positioning system?
PCV absolute linear positioning system performance can be customized to suit specific application requirements.
The IP address is a critical part of the network for industrial Ethernet devices
This may sound ridiculous. Most of us have experience with commercial Ethernet devices such as PCs, DSL modems, network printers, etc. All of these devices set their IP addresses automatically using a network DHCP server. The PC or printer name is all that is important.
When designing FOUNDATION™ fieldbus or PROFIBUS PA networks, it is extremely important to make sure that the devices on those networks have enough power to start up properly and operate normally.
The fieldbus physical layer specification IEC 61158-1 defines the min/max voltage levels for FOUNDATION fieldbus and PROFIBUS PA. The minimum voltage required for any fieldbus device is 9 V and the maximum voltage allowed on a fieldbus network is 32 V.
To calculate the voltage drop along a fieldbus cable, you must know the number of connected instruments and their current consumption, as well as the resistance of the cable, cable length, and power supply voltage. Typical fieldbus devices consume 15 mA to 20 mA. The exact number can be found on instrument data sheets. A standard “type A” fieldbus cable has a typical resistance of 44 Ohm/Km and a typical fieldbus power supply supplies 30 V.
Knowing the total current draw, supply voltage, cable resistance, and cable distance of a segment, and applying Ohm’s law, allows you to deliver maximum distance and/or voltage drop at a certain distance.
To simplify these calculations, companies like Pepperl+Fuchs have created free-of-charge segment design tools like Segment Checker.