ML1000 Fault - Unexpected Reset

[LURBY 1]

Every once in a while I will get a fault on a Micrologix 1000. The fault is "unexpected reset occurred" The fault always clears but you have to reload the program or it will go into fault again. Anyone ever experience this before? I use a LOT of 1000's and this occurs once every 20 or so PLC's. Thanks, Chuck

[TimWilborne 108]

Are you using the built in 24vdc for anything?

[Mickey 71]

Check grounding and make sure you have surge protection on all inductive loads.