Quote Originally Posted by Web Goblin View Post
Right enough Andy, I missed that bit but the drawing is not complete and I just assumed that he would be using a 24VDC coil and usin the maintained 24VDC supply for the estop circuit and switching the 240V AC.
Yes you are right it's not complete, I have assumed that K1 and K2 are the E Stop N/C contacts, no doubt birchy will be along shortly to clarify.