Should you use a safety PLC or a standard PLC and safety relays?
When Apple released the iPhone X in 2017, some critics suggested the improvements compared with its predecessor were not worth the extra cost. However, if you could benefit from facial identification and an OLED display, the iPhone X may be a good choice. Manufacturers must also consider the specifications they need when choosing between a standard programmable logic controller (PLC) and a safety PLC. Here, Bernard Zwickler, director of automation parts supplier EU Automation GmbH, explains.