Industrial Motor Control Wiring Diagram. Wiring and electrical service must be performed only by qualified electricians. Motor contactor or starter coils are typically designated by the letter m in ladder logic diagrams.
Continuous motor operation with a momentary start switch is possible if a normally open seal in contact from the contactor is connected in parallel with the start switch so that once the contactor is energized it maintains power to itself and keeps itself. Refer to the motor manufacturers data on the motor for wiring diagrams on standard frame ex e ex d etc. These diagrams apply to intelligent control motorsthat are fitted to the following products pgs ocdeec.
Contacts time delay after coil normally open normally closed normally open normally closed relay etc.
Note that symbols are discussed in detail later. It is your job to improvise a solution. Its submitted by government in the best field. Inst maint wiring5qxd 20112015 1137 am page 6.