Vertical mill electrical control circuit

Published:2011/7/5 0:03:00 Author:John | Keyword: Vertical mill | From:SeekIC

The button ST is pressed to induct the KM1 coil circuit. When the pin 5-6 of KM1 is disconnected, HG is off; and when the pin 1~2 is connected, yellow light HY lights. This indicated that it is starting. The pin 7-8 of KM1 is disconnected to prevent KM2 from being powered under accidental circumstances. Thus, the interlock between KM1 and KM2 has been achieved. When the contact 3-4 of KM1 is closed, KM1 is self-locked. This is able to lead the timing relay KT to start to work. (SA’s contacts are connected), but also to close the middle relay K by electric pull. Then the contact 3 ~ 4 and contact 5 ~ 6 both close. As a result, the heating element in the hot relay circuit is in short, thus preventing motor M from FT’s malfunction while staring with high current.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/Relay_Control/Vertical_mill_electrical_control_circuit.html

Print this Page | Comments | Reading(3)