Title :
PLC timer applications technique
Author :
Zhao, Jing ; Liu, Lijuan
Author_Institution :
Sch. of Phys. & Electron. Technol., Liaoning Normal Univ., Dalian, China
Abstract :
This article described four kinds of time-delay contacts (delayed on of normally open contact, delayed off of normally closed contact, delayed off normally open contact, delayed on of normally closed contact)technique using the PLC timer to implement time-relay, extension, and the timer changed the set value and square-wave generator method for improving the precision of timing. The ladder diagrams and waveforms have been verified in Panasonic FP1-C72PLC control unit, and you can use them directly.
Keywords :
electrical contacts; programmable controllers; relays; PLC timer applications technique; Panasonic FP1-C72PLC control unit; ladder diagram; normally closed contact delayed off; normally closed contact delayed on; normally open contact delayed off; normally open contact delayed on; programmable logic controller; square-wave generator method; time-delay contact; time-relay; timing precision; Coils; Delay; Educational institutions; Generators; Manuals; Radiation detectors; Relays; Panasonic Programmable Logic Controller; design of ladder diagram; time relay; timer;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6057047
