Safety Relays: Part 1

Why do we use Safety Relays?
1. Implementing various safety functions- commonly in plant environments
2. Commonly used with other safety relays
3. Each relay will monitor one specific function
4. Contacts can be open or closed, like a normal relay
5. Electronic evaluation, and control outputs based on evaluations
6. Can be fully electronic
7. Will still function if device fault occurs
8. Redundant features help overcome wiring errors
Devices that commonly use Safety Relays:
1. Emergency Stops
2. 3 Position Devices
3. Safety Gates
4. Pressure Sensitive Mats
5. Contact Strips
6. Foot Operated Switches
7. Time Delay Scenarios

Other videos on relays: Time Delay Relays Basics

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