The response time of a PILZ safety relay depends on the specific model and application, but in general, they are designed to react very quickly to ensure maximum safety. Most PILZ safety relays have a response time ranging between 10 to 30 milliseconds (ms) for immediate shutdown operations. For example, the PNOZcompact series offers a fast response time of around 12 ms, making it suitable for light barrier monitoring or emergency stop functions where quick reaction is critical. In contrast, models like the PNOZ e4.1p perform a feedback loop check within 150 ms to verify that the system resets correctly after activation. Some versions are built with adjustable delay options that allow engineers to fine-tune the shutdown or restart timing depending on the machinery’s needs.
PILZ designs its safety relays to respond fast enough to stop hazardous motion before a risk reaches the operator. This quick reaction is achieved through internal redundancy, continuous self-monitoring, and safety contact testing during every operation cycle. While most models provide instant response for safety-critical inputs like emergency stops or guard doors, certain variants—such as timer or delayed shutdown types—can have adjustable delay ranges extending up to several seconds for process-specific control. The exact response time always depends on the relay type, supply voltage, and connected load. Therefore, it’s important to refer to the product’s technical datasheet for precise details. In short, the PILZ safety relay response time is typically around 10–30 ms for immediate stop functions and up to 150 ms for feedback verification, ensuring that any hazardous condition is detected and acted upon almost instantly to protect both operators and machinery in industrial environments.