What is the primary purpose of safety relays in automation systems?

The primary purpose of safety relays in automation systems is to ensure the safety of operators during machine operation. Safety relays are designed to monitor safety-critical functions and inputs, and they respond to any faults or unsafe conditions by shutting down or controlling machine operations. This helps prevent accidents and injuries, which is essential in maintaining a safe working environment.

Safety relays play a crucial role in emergency stop circuits, interlocking devices, and monitoring safety mats or light curtains. By doing so, they can quickly detect hazardous situations and take appropriate actions, such as stopping machinery or isolating power, thereby protecting personnel from potential harm. The focus on operator safety is central to their design and function, aligning with regulatory standards and safety practices in the automation industry.