slc 500

i have a 1746-p2, i have 7 rack chassis with a slc 5/03 one input card and one output card, when i plug in the power suppy cord , the power supply blinks and turns off, i had this problem yesterday,some times it comes on some times it does not, so this morning it did it again, i put a new power supply and it did the same thing????? i changed every thing , processor, took cards out , changed rack???? help me plz, i also checked voltage on out let 125vac and also tried pluging in some where else , i got the same thing

Input jumper? Fuse? see picture.

Have you tried removing all cards, leave just the processor?

thanks mickey, bad out put card!!!!!

Sorry to borrow your thread to post my question,
I have one remote io scanner 1747-SN installed on my SLC-500 chassis and connected to a remote flex i/o rack at remote location. Now, I want to add another flex i/o rack at the opposite location. That means I have to run a longer blue hose from the the existing flex i/o rack to the new one. From the manual, the network has to be in series. Is it possible to add another scanner card 1747-SN to my chassis for new connection? Do you have any better way to combat this? Thanks for your help.

Welcome to the Forum, Bob.

Generally you'll get better results starting a new thread, even if it's very closely related to a recent one (best to cite/link the previous thread).

To answer your question: the RIO network has to be in series, but not in sequence. The wiring is a parallel bus and the scanner can be anywhere.

Right now your network cabling is:

SN                                        ASB

(T)........................................(T)

There's no reason the 1747-SN can't be in the middle of the daisy-chain:

ASB                         SN                       ASB

(T).........................|.......................(T)

The termination resistors (T) just have to be at the physical ends of the network; the Scanner does not have to be at the physical end of the network.