This website uses cookies primarily for visitor analytics. Certain pages will ask you to fill in contact details to receive additional information. On these pages you have the option of having the site log your details for future visits. Indicating you want the site to remember your details will place a cookie on your device. To view our full cookie policy, please click here. You can also view it at any time by going to our Contact Us page.

Extended fieldbus options for drives allow more flexible control

09 December 2014

New fieldbus options provide drives’ users with fast, accurate control of processes as well as access to large amounts of data on how the process is behaving. 

Some of the latest variable-speed drives from ABB offer two option slots for fieldbus modules. These modules can be of different types, allowing, for example, a PROFIBUS module and an Ethernet module to be run at the same time. 

This allows the user to control a process with the most appropriate protocol while gathering data from the production process by another completely separate route. 

For instance, the PROFIBUS module is best placed when a high degree of predictability is needed such that all drives respond at the same time and in the same way. Here the command and control fieldbus operates quickly and in a synchronised way. 

Meanwhile, the Ethernet module can be used to gather production data, such as statistics on how the system is behaving.  

This dual system also allows for a more robust system design. If control data and production data all went via one network, the production data could slow the control system down, making it unresponsive, or the mass of data being collected could interrupt communication.

Users can connect the drives to any industrial network by installing an option module. As well as the ability to use PROFIBUS-DP, the most widely used industrial fieldbus, ABB’s latest drives can connect to Modbus, CanOpen, DeviceNet, EtherCat and PowerLink. Future plans will also see the drive able to operate with LonWorks and ControlNet.

Also offered is access to Ethernet. These networks are cheaper to install and are traditionally present in a factory to provide IT support. ABB’s drives can now be connected onto the same networks, allowing them to be viewed on the web or only within the office. Any of the drive parameters can be passed across either of the two networks. 

A two-port module makes Ethernet networks quick and easy to build, as the cable can be looped in then out as a daisy chain. This removes the need for an Ethernet switch to connect the drives onto the network. The two-port device also maintains communications when the drive is off.

Previously, Ethernet was not used for control, as synchronised, time stamped operation was not possible. This meant users could not be sure when the drive would start. New protocols now allow users to take advantage of Ethernet speeds, but with synchronised, predictable operation, bringing the possibility of true control of devices over Ethernet instead of simply monitoring their behaviour.

Another option is the ability to use PROFIsafe. The safe version of the fieldbus system PROFIBUS, it allows safety signals to be sent via fieldbus instead of a hard-wired system, which can be expensive. The ABB AC500 PLC has safety I/O and PROFIsafe, so the addition of PROFIsafe to the latest ABB drives allows a complete system to be designed and built.


Contact Details and Archive...

Print this page | E-mail this page

RELATED CONTENT...


Article image UMB800

The UMB800 from Pepperl+Fuchs is the world's smallest ultrasonic sensor in solid stainless steel. It is made entirely from FDA-compliant materials.Full Story...

Article image Sensors for packaging

Packaging technology is diverse, as are the sensors that are used. It's a wonderful thing when everything is available from a single source.Full Story...

New warehouse, new sensors

SICK Safety Camera is a Versatile Light Curtain Alternative

Morgan introduces new ultrasonic sensor solution for food & beverage sector

RELATED SPONSORED ARTICLES...


Article image New warehouse, new sensors

winkler plans its intralogistics ten years in advance and, with the Klinkhammer Group, found the ideal partner for the new building measures already in 2004. As in previous years, Leuze electronic is contributing sen-sors to this project as well, including optical data transceivers and bar code readers of the latest generation.Full Story...

Article image SICK Safety Camera is a Versatile Light Curtain Alternative

SICK UK has launched the V300 infra-red vision camera to offer a convenient and reliable Type 3 alternative to a safety guard light curtain in production and warehouse environments.Full Story...

With optical sensors, sometimes the pure performance matters most of all

New Sick PBSH pressure switch reduces hygiene costs for food processors

Sensor breakthrough bridges the gap for packaging productivity

MOST VIEWED...


Article image Spray and save on the glazing process

Food glazes are widely used in the bakery sector to improve the look and taste of baked products. Traditionally, this coating process has resulted in substantial waste. Technology advances mean that this is no longer the case. Full Story...

Article image Getting the Industry 4.0 journey started

Suzanne Gill finds out why the UK food industry needs to embrace the idea of Industry 4.0 and why the journey needs to start now. Full Story...

Your flexible friend in the food factory

Don’t get left out in the cold this Christmas

Self diagnostics: an enabler for predictive maintenance

http://www.appetite4eng.co.uk