Normally Open = OFF when it's not powered (at rest). Normally Closed = ON when it's not powered (at rest). In electrical drawings they are represented at rest. Things get even more interesting with photoelectric sensors, with "light on" or "dark on" modes or when you need to invert the signal in the PLC :)
Just found your channel at work doing BMS. Great resources you've uploaded. Thanks mate 👍
Brilliant video!
Brilliant video on this! Top man, keep the videos coming!!
Good explanation. No and Nc always throws me
Glad to help 🙂👊🏼
Normally Open = OFF when it's not powered (at rest).
Normally Closed = ON when it's not powered (at rest).
In electrical drawings they are represented at rest.
Things get even more interesting with photoelectric sensors, with "light on" or "dark on" modes or when you need to invert the signal in the PLC :)
NO Nice One