Feature: Power
Figure 1: Decentralised power supplies by PULS
Power decentralisation made easy
By Kamil Buczek, Product Manager, Rugged Products; Sebastian Lederer, New Product and Applications Engineer; and Maximilian Hülsebusch, Marketing Communications Specialist, PULS
T
he demand for fl exible, modular systems is shaping the world of automation, control and machine building. Decentralisation of system components has been an important factor in this growing trend. It speeds up the system planning process, simplifi es installation and maintenance,
and facilitates future expansion. For many system builders and installers, the power supply has been an obstacle on the path to consistent decentralisation. In particular, where functions such as selective current distribution, protection and condition monitoring need to be implemented whilst providing maximum reliability and uptime.
16 March 2021
www.electronicsworld.co.uk
Challenges and solutions To achieve a decentralised power supply, an obvious solution is to design a system that mounts directly onto a machine or installation. T e power supply and other standard components such as fuses, communication terminals, distributor blocks or switches are relocated from the central control cabinet to smaller enclosures in the fi eld. T e installation of these components outside an environmentally-protected central cabinet means they will require a high IP rating individually to ensure protection against dust and moisture. Providing protection to class IP54, IP65 or IP67 may be required, depending on the application. T e result will be a small, decentralised on-site cabinet for which the individual components must be selected, ordered, stored, assembled and installed, a time-consuming and complex task. In most cases there is very little space available on a machine to locate a control system, so fi nding a location for this cabinet can be problematic. Engineers oſt en need to be creative, positioning the cabinets above or below the system, which sometimes makes access diffi cult for installation and servicing. However, compact all-in-one solutions for decentralised
applications are available, such as those form PULS. Its FIEPOS Field power-supply family is based on a modular platform developed specifi cally for use outside a cabinet. All models are based on either single-phase or three-phase input power with either a 300W or 500W output rating. All devices in the FIEPOS family provide 120% power continuously (up to +45°C) and 200% for fi ve seconds making them suitable for loads with demanding start-up cycles. With a housing size of only 182 x 183 x 57mm (W x H x D),
they can be installed even in applications where space is at a premium. T e units can be mounted on a DIN rail, using a variety of provided mounting holes.
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44
