|
The trend in the field of automation technology to a distributed design with modular peripheral devices remains unchanged. |
The use of Profibus in particular is growing continually in the fieldbus technology field.
The trend in the field of automation technology to a distributed design with modular peripheral devices remains unchanged. The use of Profibus in particular is growing continually in the fieldbus technology field. By the end of 2007 the Profibus user organization – Profibus-Nutzerorganisation e. V. (PNO) – has made it its objective to double the number of installed bases to 20 million stations. Alone 2.6 million new stations in 2004 meant a growth in sales of 30 % compared to the previous year. Now the question is how are decentral peripheral devices structured!
A whole range of I/O systems from different manufacturers are available for the IP20 area within the control cabinet which cover the entire range – from cost-optimised low-cost systems to high-end systems – with exceptional levels of availability featuring channel-related diagnostics and further features such as “Hot Swapping” or the separation of connection technology and electronics.
It is now particularly easy to take the existing systems and to install them in an installation housing directly on the machine. This may reduce the cable lengths to the sensors but does not offer any particular advantages. It is still necessary to invest a lot of time to lead out the sensor cables, to put them through the cable glands and to connect them to the IP20 bus terminals.
Unfortunately polarity reversal errors with the cabling occur which has a negative effect on the little commissioning time that there is. If the fieldbus nodes then have to be extended by a few signals, chaos may ensue. Further cable glands must be installed in the installation housing and in the worst case scenario no more space will be available in the housing.
This is exactly the point at which the IP67 fieldbus devices come into play. It is only possible to comprehensively implement the distributed automation technology concept with high-performance and flexible IP67 fieldbus devices.
Only high-performance fieldbus devices are considered for decentral automation
TURCK covers all the relevant areas in the automation pyramid in the sensor, interface, connection and fieldbus technology fields. Here the area of fieldbus technology has become an important part of the business in the last few years and is developing with above average growth...
The author
Markus Ingenerf
is product specialist for BL67
within the product marketing team of
Hans Turck GmbH, Mülheim.
Download full size editorial:
|
|
|
|
|
RFID - Simulator |
|
|
 |
|
| |
|
|
.jpg)
