Tip 4 – Don’t forget to protect
Monitoring devices can help prevent most failures and extend a motor’s life. Protection against dangers such as sudden overload, however, is also key to safeguarding the motor, the machine they power and the people that operate them. This is what safety relays are for. Ease of use and installation and versatility together with the ability to integrate the device into the IIoT infrastructure are some of the key features to look for. Pilz’s PMDs range of relays, for example, features push-in technology offers easy, tool-free installation. They are also easy to use as parameters can be quickly set on the front of the device – all you need is a screwdriver.
Siemen’s Sirius series of overload relays are ATEX-certified, meaning they can be used in a variety of applications, including explosion-proof motors. Thanks to an IO-Link, it can easily connect to a higher-level control and therefore integrate it into an automation environment. This feature can help increase system availability and makes system documentation simpler thanks to integrated diagnostics functions and readable parameter assignment.
About the author:
Andrew Guest is Product Manager at Distrelec – www.distrelec.com