What is the Function of (Y1 slot) in the Connection of the ON-delay timer RE17RAMU?
Y1 = is contact Auxilary for Timers of Functions B or C or ...
The RE17RAMU is of Function (A) starts timing when power is applied directly. The RE17RCMU requires power all the time and is initiated when Y1 to A1 is closed and starts timing when this circuit is opened.
In the case of RE17RAMU, Y1 will not be connected with any terminal as it will not have a clear function.