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 :)
Not so. N.O means circuit is open when not energised N.C means circuit is closed when not energised, it doesn't mean something is on. It can't be on if it's not powered.
Just found your channel at work doing BMS. Great resources you've uploaded. Thanks mate 👍
Brilliant video on this! Top man, keep the videos coming!!
Brilliant video!
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
Not so.
N.O means circuit is open when not energised
N.C means circuit is closed when not energised, it doesn't mean something is on. It can't be on if it's not powered.
@@jayseabie215 When I mean "not powered" I am referring to the solenoid that operates the relay, not the load...