VinceS
Specifier/Regulator
- Jan 13, 2008
- 2
It is clear that the guidelines for restarting equipment after a type 0 or 1 stop event should not restart previously running equipment.
In the case of 2 wire controlled motor starter. The control power was removed during a commanded E-Stop event via the MCR. When the E-Stop is reset and the commanded event ends, the MCR restores control power and all 2 wire controlled equipment will restart, providing all switch positions remain the same.
Now the question: Did the 2 wire controlled device restart due to the E-Stop being reset or due to the position of the start command of the 2 wire device?
In the case of 2 wire controlled motor starter. The control power was removed during a commanded E-Stop event via the MCR. When the E-Stop is reset and the commanded event ends, the MCR restores control power and all 2 wire controlled equipment will restart, providing all switch positions remain the same.
Now the question: Did the 2 wire controlled device restart due to the E-Stop being reset or due to the position of the start command of the 2 wire device?