Contactor control circuits pdf file

Controls contactors and contactor assemblies mci electronics. To indicate static switching control, use the symbols shown in this. Electra cloud is an industrial strength electrical cad software that works fully on the browser with builtin collaboration that allows you to access cad resources everywhere. An actuating current on a coil operates one or more galvanically separated contacts or load circuits. Control panel technical guide how to quickly design optimized. Voltage ue up to 500 v ac current ie up to 5000 a contactor type ac control circuit iorr800 iorr iorr1400 iorr1700 iorr2100 iorr2500 iorr3200 iorr3800 iorr4500 iorr5100 dc control circuit iore800 iore iore1400 iore1700 iore2100 iore2500 iore3200. Ac reversing manual starters and manual motor starting switches. The life expectancy of a contactor or contact life the life expectancy of a contactor or its contact life is one of the biggest concerns of a user. The switch or button of the manual controller is not operated remotely and is attached to the controller physically.

For more information about short circuit protection of contactors without overload relay, see. Pdf electronic control of an electromagnetic contactor. Fused control circuit transformer and control relay. Maximum backup fuse for shortcircuit protection gl and gg. Easy engineering through integrated suppressor circuits for dc. Brochure r contactors control of ac and dc power circuits. Relays relays are electro magnetically operated switches. Motor control circuits ladder logic electronics textbook. Catalog number explanation tnl 44e84 frame type coil voltage see coil voltage chart below. The magnetic coil is switched directly on and off with the control supply voltage us by way. Static switching control is a method of switching electrical circuits without the use of contacts, primarily by. Type nl and tnl control relays are used for switching auxiliary circuits and control circuits.

This is the most common type of contactor used in industrial control applications. The employers liability insurance association demands that, for control systems of powerdriven metalwork presses, the contacts of contactors must be interlocked and opposing. Contact configuration location of surge suppressors. A reverser pair of contactors can be wired upstream with the appropriate interlocking circuit. Static switching control is a method of switching electrical circuits without the use of contacts, primarily by solid state devices. Motor contactor or starter coils are typically designated by the letter m in ladder logic diagrams. The electro mechanical relay is a remote controlled switch capable of switching multiple circuits, either individually, simultaneously, or in sequence.