munzir
Full Member level 6
why the relay chatters & gives the output to the PLC CPU input & whole machine stops?
why the relay chatters & gives the output to the PLC CPU input & whole machine stops (trips) ?
the relay is 14 pin having AC 220 V coil voltage & output is 24 volts ......
the relay keeps energized when the machine is running & when its de-energized it gives 0 v dc output to the input of the PLC & machine stops ......
Basically the purpose of this relay is to generate the machine stop signal (when any of the two stop buttons are pressed or when any of the 9 emergency button is pressed) ......
all of the 9 emergency buttons are connected in series to each other and their NC (Normally closed) contact is used ......
when any of the emergency button is pressed or any stop button is presses (& the relay becomes de-energized & giving the 0 v dc output to the plc input) then there exist 10 V AC on the contacts of the relay ......
https://obrazki.elektroda.pl/13_1326120624.jpg
https://obrazki.elektroda.pl/19_1326120624.jpg
what's the problem ?
thanks
why the relay chatters & gives the output to the PLC CPU input & whole machine stops (trips) ?
the relay is 14 pin having AC 220 V coil voltage & output is 24 volts ......
the relay keeps energized when the machine is running & when its de-energized it gives 0 v dc output to the input of the PLC & machine stops ......
Basically the purpose of this relay is to generate the machine stop signal (when any of the two stop buttons are pressed or when any of the 9 emergency button is pressed) ......
all of the 9 emergency buttons are connected in series to each other and their NC (Normally closed) contact is used ......
when any of the emergency button is pressed or any stop button is presses (& the relay becomes de-energized & giving the 0 v dc output to the plc input) then there exist 10 V AC on the contacts of the relay ......
https://obrazki.elektroda.pl/13_1326120624.jpg
https://obrazki.elektroda.pl/19_1326120624.jpg
what's the problem ?
thanks