LogiCore Technical Blog

Application notes, engineering insights, and technical analysis from our automation engineering team.

Technical Article

I Bought a Cheap Allen-Bradley PLC and It Cost Me a Client

A procurement mistake with a discounted Allen-Bradley PLC turned a $420 saving into a $4,200 loss. Here is what I learned about the hidden cost of cheap PLC deals. [...]

Continue Reading →
Technical Article

I Tried to Save $800 on an Allen-Bradley PLC. It Almost Cost Us a Week of Production

A controls engineer's first-person account of trying to save $800 on a CompactLogix 5380, nearly missing a plant shutdown window, and learning why the guaranteed delivery premium is worth every dollar. [...]

Continue Reading →
Technical Article

How a $22,000 Rework Taught Me to Verify Allen-Bradley PLC Digital Input and Digital Output Specs

A quality manager shares a $22,000 lesson about digital input and digital output modules, output module of PLC selection, sensor proximity sensor wiring, power supply module sizing, power extension cable voltage drop, and the PanelView C300. [...]

Continue Reading →
Technical Article

Allen-Bradley PLC FAQ: 5069, Software, Connectors, and Power Protection

Answers for Allen-Bradley PLC buyers and maintenance teams: 5069 CompactLogix, RSLogix 5000 vs Studio 5000, PLC connector needs, battery charger trickle, and power strip vs surge protector. [...]

Continue Reading →
Technical Article

Allen-Bradley PLC FAQs: Used Hardware, PLC-5 Manuals, and Field Testing

Allen-Bradley PLC buying and programming FAQs answered by a quality inspector. Covers used Allen Bradley PLC deals, PLC-5 programming manual PDF sources, 250-watt solar panel monitoring, fuel pump system diagnostics, and multimeter car battery testing. [...]

Continue Reading →
Technical Article

The Allen-Bradley PLC Cost That Keeps Showing Up on My Spreadsheet

A procurement manager breaks down the real cost of Allen-Bradley PLCs—programming hours, Rockwell Automation ecosystem lock-in, training, and the mistakes that quietly inflate automation budgets. [...]

Continue Reading →
Technical Article

We Saved $1,850 on an Allen-Bradley PLC. It Cost Us $4,200.

How a procurement decision to save $1,850 on an Allen-Bradley PLC ended up costing $4,200. A buyer's perspective on total cost of ownership, training, and support. [...]

Continue Reading →
Technical Article

Why Your Allen-Bradley PLC Keeps Shutting Down a 6Amp Battery Charger (and the Hidden Cost of Data Type Mistakes)

A cost controller explains why Allen-Bradley PLC data types and logic are often the real reason a battery charger fails, how a Solar Pro Logix charger got caught in the trap, and why a multimeter check before a service call can save thousands. [...]

Continue Reading →
Technical Article

The $4,200 Allen-Bradley PLC Lesson: Why TCO Beats Sticker Price

A procurement manager's story about replacing an Allen-Bradley PLC SLC 500 with an Allen-Bradley 1756 PLC quote, a Cruisair marine air conditioner control panel, a Guest battery charger, and the total cost difference between an inverter and a generator. [...]

Continue Reading →
Technical Article

Allen-Bradley PLCs: Why the Cheapest Quote Isn't Always the Best Deal (A Buyer's Perspective)

A procurement manager with over 6 years of experience buying industrial automation components breaks down the hidden costs and time-certainty trade-offs involved in choosing between older, budget-friendly Allen-Bradley PLCs and current-generation models. This is a practical, no-nonsense comparison for engineers and buyers. [...]

Continue Reading →