In general terms, a safety relay is a device designed to monitor and control safety functions in industrial applications. They are commonly used to ensure the safety of machinery and processes. Safety relays often consist of different modules that work together to achieve the required safety functionality. The head module is likely the main control unit of the safety relay system. It houses the intelligence and processing capability needed to monitor inputs, process signals, and control outputs based on safety requirements. Safety relay systems often support expansion modules to enhance functionality. These expansion modules may add additional input channels, output channels, or communication interfaces. The communication between the head module and expansion modules is crucial for coordination and data exchange. http://www.pilz.com
The supply voltage is the electrical power provided to the safety relay system to ensure its proper operation. It’s essential to provide the correct voltage within the specified range for the safety relay to function reliably. The input likely refers to a safety input, such as a signal from a safety sensor or switch. Safety relays monitor these inputs to detect unsafe conditions, and if necessary, they take actions to bring the system to a safe state. To get the most accurate and up-to-date information about the myPNOZ safety relay and its components, I recommend checking the product documentation, datasheets, or contacting the manufacturer directly. Manufacturers typically provide detailed specifications and technical support for their products. http://www.pilz.com
