Hey guys,
I just want to confirm this regarding a PLC/relay interlocking scheme question from Shorebrook PE Power Exam, question 54.
Shouldn't the solution to this problem actually be D? At least, that's how I learned it from Zach Stone's Electrical PE Review class.
If you use the given solution C :
Thanks for any input on this!
I just want to confirm this regarding a PLC/relay interlocking scheme question from Shorebrook PE Power Exam, question 54.
Shouldn't the solution to this problem actually be D? At least, that's how I learned it from Zach Stone's Electrical PE Review class.
If you use the given solution C :
- When you press the PB-A push button, this de-energizes Relay Coil RA and light LX, since it opens the normally closed contact RA leading to these two.
- When you press the PB-B push button, this de-energizes Relay Coil RB and light LY, since it opens the normally closed contact RB leading to these two.
Thanks for any input on this!
