So I draw this schematic, which covers the power stage on/off switching and the E-STOP.
TIME1&2 are variable time relays set to 1sec. 110V uninsolated transformer is used only for them and the power contactors. +18V UHU is going to the 7812 regulators. I am still not sure about the values of shunt resistors, that's why there are none.
Advise on errors and improvements are welcome.
Todor |