Industrial Automation News September 2026: Chip Shortages, Tariffs, and Allen-Bradley End-of-Life — What It Means for Your Spare Parts
Share
The biggest industrial automation story for September 2026 is that lead times and prices on PLCs, HMIs, servo drives, and variable frequency drives from Allen-Bradley (Rockwell Automation), Siemens, ABB, Schneider Electric, and Omron are rising at the same time — driven by a global memory-chip shortage, tariff layers on imported controls, and a wave of legacy end-of-life notices — and the fastest hedge for most plants is verified new, surplus, and used inventory already sitting in the U.S. This monthly roundup pulls together the manufacturing news that actually changes how you should stock spare parts, then translates each headline into a concrete action for your control panels.
September 2026 Industrial Automation News at a Glance
| Headline | What Happened | Components Affected | Spare-Parts Action |
|---|---|---|---|
| Rockwell Automation Q3 FY2026 results (Aug 4) | Sales up 8%, organic sales up 10%, North America up 12%. Strongest demand in semiconductor, data center, and warehouse automation. An inflation-related price increase was implemented late in the quarter, with roughly 100 basis points of full-year pricing tied to tariffs. | ControlLogix 1756, CompactLogix 1769/5069, PowerFlex 525/755, Kinetix 5700, PanelView Plus 7, Studio 5000 licensing | Expect higher list prices on new Allen-Bradley hardware through Q4. Lock in critical spares before the increase flows through distribution. |
| Memory-chip shortage ("RAMageddon") | DRAM and NAND contract prices up roughly 80–90% quarter over quarter; some semiconductor lead times stretched to 40 weeks; DDR3/DDR4 parts used in legacy industrial designs reaching end of life. Analysts expect tight supply into late 2027. | Any controller, HMI, or drive with onboard memory: PLC CPUs, PanelView / SIMATIC HMI / Magelis terminals, drive control boards, safety controllers | Stop treating processors and HMIs as "order when it fails" items. Keep one tested spare per critical platform. |
| Tariffs on imported automation hardware | Duty layers of 25–60% reported on controllers, HMIs, VFDs, and vision systems with overseas assembly, even on domestic-branded products with global supply chains. Reshoring named a top 2026 demand driver. | VFDs, servo drives, HMIs, power supplies, sensors, contactors sourced from Asia and Europe | Domestic surplus and used stock is already landed — no new duty exposure, no allocation queue. |
| Rockwell 2026 State of Smart Manufacturing Report | 90% of 1,560 manufacturers surveyed say digital transformation is essential; 46% had a cyber incident in the past year; one-third of operating budgets go to industrial technology. | Networked PLCs, Ethernet/IP modules, edge gateways, legacy controllers with no security patches | Plants modernizing in phases still need legacy spares to keep un-migrated lines running during the transition. |
| Automate 2026 (Chicago) | Schneider Electric pushed open, software-defined automation and NEMA "Make it American" certification across 20+ U.S. facilities; ABB Robotics showed "physical AI"; Omron demonstrated next-generation AMRs; NVIDIA sponsored a humanoid robot pavilion. | Modicon M580/M340, EcoStruxure, ABB ACS880 drives, Omron NX/NJ controllers | New platforms take years to displace installed base. The installed base is where spare-parts demand lives. |
| Allen-Bradley lifecycle churn | PLC-5 and SLC 500 long discontinued, MicroLogix winding down, PanelView Standard terminals discontinued; Rockwell "Silver Series" status signals 6–24 months to Inactive. | 1747 SLC 500 processors and I/O, 1771 PLC-5, 1761/1762/1763/1766 MicroLogix, 2711 PanelView, 1336 drives | These are surplus-market-only parts now. Buy tested, graded units from a supplier who stocks them. |
Rule of thumb for 2026: when a manufacturer publishes a price increase or an end-of-life notice, secondary-market prices on that family follow within weeks. Buy before the notice becomes a shortage.
Decoding Lifecycle Status: Rockwell, Siemens, ABB, and Schneider Electric
Every major manufacturer uses a different vocabulary for "this part is going away." Knowing the codes tells you how much time you have.
- Rockwell Automation / Allen-Bradley: Active → Active Mature (still made, migration path published) → End of Life (discontinued date announced, production winding down) → Discontinued (not orderable). The "Silver Series" designation is the warning shot — it means Inactive status within 6–24 months. Current Silver / End-of-Life families include the 1747 SLC 500 line, 1771 PLC-5 I/O, MicroLogix 1000/1100/1400 (1761, 1763, 1766), PanelView Standard and PanelView Plus 6 (2711P), 1336 PLUS II drives, and early PowerFlex 4/40 catalog numbers. ControlLogix 1756-L7x, CompactLogix 1769-L3x, PowerFlex 525/755, and Kinetix 5700 remain Active.
- Siemens: Active → Phase-Out (PM300) → Product Cancellation (PM400). SIMATIC S7-300 and S7-400 are in phase-out, with S7-1500 as the migration target; SIMATIC S5 is fully cancelled. ET200S is giving way to ET200SP; older SINAMICS G110/G120 revisions are being superseded.
- ABB: Active → Classic → Limited → Obsolete. ACS550 and ACS800 drives are Classic/Limited; ACS580 and ACS880 are the current families. ABB AC500 PLCs and legacy Baldor controls follow the same ladder.
- Schneider Electric: Commercialized → End of Commercialization → End of Service. Modicon Quantum, Premium, and Momentum are at end of commercialization, replaced by Modicon M580 and M340; Telemecanique-branded contactors (LC1D) and Magelis HMIs (XBT) are largely superseded by TeSys and Harmony lines.
- Omron: Active → Planned Discontinuation → Discontinued. CJ1 and CS1 PLCs and older NS-series HMIs are being replaced by NX/NJ controllers and NA-series HMIs.
Reading the status correctly matters because most manufacturers keep taking orders during the phase-out window, but allocation and lead time deteriorate long before the official cancellation date.
Signs Your Plant Is Exposed Right Now
- Quoted lead time over 20 weeks on a PLC processor, HMI, or VFD — a direct symptom of the memory and semiconductor allocation squeeze.
- Last-time-buy notice from your distributor on an Allen-Bradley, Siemens, or ABB part number you still have in service.
- PLC processor fault with no spare on the shelf — a 1747-L551, 1756-L61, or S7-300 CPU failure that turns into a multi-week outage because the replacement is on allocation.
- PanelView won't boot or touchscreen stopped responding on a 2711 or 2711P terminal — these HMIs depend on exactly the DDR3/DDR4 memory now hardest to source.
- PowerFlex or SINAMICS drive fault codes repeating (overvoltage, DC bus, IGBT faults) on a drive whose control board is no longer manufactured.
- Contactor chattering or burnt coil on Allen-Bradley Bulletin 100-C, Siemens 3RT, Schneider LC1D, or Eaton XTCE units — tariff-exposed imports with rising replacement cost.
- Firmware revision you cannot match — the new unit ships with firmware your Studio 5000 or TIA Portal project does not support, forcing an unplanned software upgrade.
- Single-source dependence — only one distributor, no surplus supplier, no repair vendor in your maintenance plan.
Sourcing Caveats: New vs. Surplus vs. Used in 2026
- New (factory-sealed): Full manufacturer warranty, latest firmware, but subject to current list price, tariff layers, and allocation lead times. Best for new builds and Active families.
- New surplus: Unused, original packaging, sourced from overstock, cancelled projects, or plant closures. Already landed in the U.S., no new duty exposure, typically ships in days. Best value for End-of-Life and Silver Series parts.
- Used / tested: Pulled from service, bench-tested, and graded. The only option for Discontinued families like PLC-5, SLC 500, and PanelView Standard. Ask for test documentation and a warranty.
- Match the series and firmware, not just the catalog number. A 1756-L71 Series B and Series A differ; PowerFlex 525 firmware revisions affect parameter compatibility; PanelView Plus 6 and Plus 7 use different FactoryTalk View ME versions. Send your existing unit's series and firmware when requesting a quote.
- Counterfeit risk rises with shortages. Open-market listings for allocated Allen-Bradley, Siemens, and Omron parts increasingly include relabeled or refurbished units sold as new. Buy from a supplier who inspects, photographs, and grades each unit.
- Size up, never down on contactors, breakers, fuses (Bussmann, Littelfuse, Mersen), and 24VDC power supplies (Phoenix Contact, SOLA, Allen-Bradley 1606) when an exact rating is unavailable — and verify coil voltage and auxiliary contact configuration before installing.
Frequently Asked Questions
Are Allen-Bradley PLC prices going up in 2026?
Yes. Rockwell Automation implemented an inflation-related price increase late in its fiscal third quarter (ending June 2026) and expects roughly 250 basis points of price realization for the year, about 100 basis points of it tied to tariffs. Distributors typically pass increases through within one quarter.
How long will the memory-chip shortage affect industrial controllers?
Most analysts expect DRAM and NAND supply to stay tight into late 2027, with new fab capacity not easing pressure until 2028. Legacy DDR3 and DDR4 parts used in older PLCs, HMIs, and drives are the most exposed because manufacturers are prioritizing high-bandwidth memory for AI data centers.
Should I stock spare PLC processors and HMIs now?
If a failure would stop a line, yes. One tested spare processor, one HMI, and one drive per critical platform is the standard hedge. Surplus and used units cost a fraction of new and are not subject to current allocation.
Where can I buy discontinued Allen-Bradley, Siemens, and ABB parts?
Authorized distributors generally do not stock discontinued items. Surplus and used industrial parts suppliers such as American Industrial Parts Group carry SLC 500, PLC-5, MicroLogix, PanelView, PowerFlex, and legacy Siemens and ABB hardware that has been tested and graded.
Stay Ahead of the Next Shortage
American Industrial Parts Group stocks new, surplus, and used industrial automation and MRO parts — PLCs, I/O modules, HMIs, contactors, motor starters, sensors, circuit breakers, relays, fuses, and power supplies from Allen-Bradley, Siemens, ABB, Schneider Electric, Omron, SMC, Phoenix Contact, Bussmann, and more — tested, graded, and ready to ship from the U.S.
Browse in-stock inventory: PLCs & Automation Controllers · SLC 500 PLC Parts · Contactors & Motor Starters · Sensors
Need a specific part number, series, or firmware revision that isn't listed? Submit a sourcing request and we'll locate it.