Legacy control platforms holding up production lines that never had a good week to be taken down and migrated.
The pattern in manufacturing is almost always the same. The plant standardized on a control platform when the line was built, the platform went end-of-life a decade or more later, and the line is still running three shifts because there was never a good time to take it down and migrate.
That is a reasonable decision right up to the moment a processor or a drive fails and the catalog number returns nothing.
The Allen-Bradley cross-reference is the deepest section of this site outside the oilfield work, and it exists for exactly this problem — obsolete-to-current paths across the processor and drive families most commonly still in service on plant floors.
| What went down | What we supply |
|---|---|
| PLC-5, SLC 500, or MicroLogix processor failed and the platform is end-of-life. | PLC-5, SLC 500, MicroLogix 1400, 1100, and 1500 / 1200 / 1000 paths |
| PowerFlex drive on a conveyor or pump is down and the family is discontinued. | PowerFlex 40, 70, 700, 4 / 400, and 1336 / 1305 cross-references |
| Newer controller has to drop into an old rack or an old program. | CompactLogix L4x migration notes and the full Allen-Bradley cross-reference |
| MCC bucket failed mid-shift on a lineup that is no longer built. | MCC buckets and MCC parts |
| Starter, contactor, or overload failure on a line motor. | Motor starters, contactors and motor control, and soft starters |
| Breaker or bus plug feeding a cell or a line has failed. | Circuit breakers and bus plugs |
| Control power or panel transformer failure. | Control transformers |
| Panel or bracket has to be rebuilt because the drop-in replacement does not exist. | Custom industrial assemblies and fabrication |
A line down mid-shift is not just the line. It is the labor standing at it, the changeover schedule behind it, and the orders that were supposed to run tonight. On a packaging or filling line it can also be product already in process that does not survive the stoppage.
None of which requires us to invent a number for you. It requires us to answer quickly and tell you the truth about lead time.
The cheapest version of this problem is the one you solve before it happens. If you have a spare parts list referencing discontinued numbers, send it. We will mark up which numbers are still available new, which have a current successor, which only exist on the surplus market, and which are genuinely finished. Knowing that during planning is worth considerably more than finding out at 2 AM.
We supply parts and build assemblies. We do not program controllers, perform migrations, or commission equipment. Where a current-production part is not a drop-in for the old footprint, we can fabricate the adapter plate or enclosure to make it fit, but the controls engineering is yours or your integrator's.
We are an independent supply and sourcing company, not an authorized distributor. Condition is disclosed before sale on every item we supply — new, new-surplus, used-tested, or reconditioned.
Call. Do not email. (832) 975-8827.