Guys, I maybe out of line on this post but, I feel you guys can lead me in th right direction.
I recently had a panelview 1250 plus, burn up. It was powered up by 24VDC along with other 24vdc equipment and devicenet. All were fused under a 7 amp CB. (This was put together before I came in by a foriegner)
When the panel view "went" it must have jolted the Devicenet master. After clearing the circuit of the burnt panel view that was tripping the 7 amp breaker, we finally got the devicenet network to respond after several attempts of downloading the network and pulling the card and resetting (Control Logix chassis).
When we installed the new panel view, it booted fine but as we were wrapping up, putting J-boxes back together blah,blah,blah, the new panel view began to smoke. Only after 15 minutes, no communication had been made, it was only powered up to the run application screen.
We pulled the wire from the new panel view, and had to install our last PV on an isolated 24VDC power supply being to scared to install it back on the 24VDC supply we used prior.
I checked the voltage with a fluke volt meter, and had 24.1 vdc and checked AC voltage getting a 0.78 vac.
Can anyone explain to me what I have missed and why other devices are running fine on this circuit but the panel view burns on it?
We shut a customer down and owe a large sum of compensation and these guys want answers. Running out of head scratches.
Could someone point me in the right direction or offer some items I could check?
I recently had a panelview 1250 plus, burn up. It was powered up by 24VDC along with other 24vdc equipment and devicenet. All were fused under a 7 amp CB. (This was put together before I came in by a foriegner)
When the panel view "went" it must have jolted the Devicenet master. After clearing the circuit of the burnt panel view that was tripping the 7 amp breaker, we finally got the devicenet network to respond after several attempts of downloading the network and pulling the card and resetting (Control Logix chassis).
When we installed the new panel view, it booted fine but as we were wrapping up, putting J-boxes back together blah,blah,blah, the new panel view began to smoke. Only after 15 minutes, no communication had been made, it was only powered up to the run application screen.
We pulled the wire from the new panel view, and had to install our last PV on an isolated 24VDC power supply being to scared to install it back on the 24VDC supply we used prior.
I checked the voltage with a fluke volt meter, and had 24.1 vdc and checked AC voltage getting a 0.78 vac.
Can anyone explain to me what I have missed and why other devices are running fine on this circuit but the panel view burns on it?
We shut a customer down and owe a large sum of compensation and these guys want answers. Running out of head scratches.
Could someone point me in the right direction or offer some items I could check?