Hello, I am kinda new to automation, I had an issue with 1743-EPAC which supply's 13 IO , when we inspected it there was a short circuit inside it, the components we're almost burned.
We had 4A CB protection on it , but it didn't work.
I have 2 questions :
1_ what could have caused the EPAC to short circuit only and the rest of components are intact
2_ we replaced the EPAC with EP24 and PFD
I read that both EPAC( convert voltage from 110 to 5V ) and EP24 ( convert voltage from 24 to 5V ) convert the voltage to backplane volt which is 5V if so why we needed the PFD ? Why couldn't we replaced the EPAC directly with EP24 since both of them convert the voltage to 5V .
Thank you .
We had 4A CB protection on it , but it didn't work.
I have 2 questions :
1_ what could have caused the EPAC to short circuit only and the rest of components are intact
2_ we replaced the EPAC with EP24 and PFD
I read that both EPAC( convert voltage from 110 to 5V ) and EP24 ( convert voltage from 24 to 5V ) convert the voltage to backplane volt which is 5V if so why we needed the PFD ? Why couldn't we replaced the EPAC directly with EP24 since both of them convert the voltage to 5V .
Thank you .