Rockwell Automation 1785-L40B
Plant PE · Line 1 · Haas ST-30 line stopper
Health
62/100 · medium confidenceReplace soon
Remaining life: 1–1.9 years
- runs at 54°C, +9°C vs. its 45°C design point: ages 1.9× faster
Anomaly detectionseverity 0.00
| vs. expected for load + ambient | -0.9 °C |
| EWMA shift (days out of control) | 0 |
| CUSUM drift (alarm at 5) | 0.0 |
| Trend °C/month (t) | -0.4 (-1.9) |
Based on: Label date code (age floor) · Cabinet thermal camera (continuous) · 90-day temperature history (statistical anomaly detection) simulated sensor data
Life used since install (1998)
203%
Expected end of life: 2027 (middle of the typical life range)
discontinued PLC-5
Recommended action
Discontinued, no successor sold new: buy the best trusted spare by Oct 2027 (refurbished, ~$4,600, ~2 days).
Order by: October 2027
Fastest delivery: ~2 days + 14-day safety buffer before expected end of life
Financial view
Downtime exposure: $5,586–$70,224 / yr
38% chance of failing this year × 48–192 h down × line cost per hour
Money model says: buy spare
line-stopping, discontinued, no shelf spare it can use; 2 trusted listing(s), buy one before it fails
Part value (real listings): $4,600–$6,010
Where to get one (5 options)
| Source | Seller | Condition | Price | Delivery | Warranty | Trust |
|---|---|---|---|---|---|---|
| Refurbisher Recommended | Industrial refurbisher B not authorized: counterfeit risk, test on arrival | refurbished | $4,600 +$80 ship | 2 days | 24 mo | 87 sample listing |
| Surplus dealer | Surplus dealer D not authorized: counterfeit risk, test on arrival | new surplus | $5,720 +$45 ship | 4 days | 3 mo | 71 sample listing |
| Refurbisher | Industrial refurbisher C not authorized: counterfeit risk, test on arrival | new surplus | $6,010 +$45 ship | 7 days | 24 mo | 82 sample listing |
| Marketplace | eBay seller (100.0% positive, 679 sales) not authorized: counterfeit risk, test on arrival | for repair | $890 +$80 ship | 5 days | 0 mo | 60 sample listing |
| Marketplace | eBay seller (97.0% positive, 231 sales) not authorized: counterfeit risk, test on arrival | for repair | $990 +$25 ship | 13 days | 0 mo | 41 sample listing |
Recommended order: a spare already on a shelf, then the manufacturer or your usual authorized distributor (for discontinued parts, the official successor), then other sources. Sample listings are illustrative until real marketplace data is connected.
Evidence
The label photo image recognition read:
PE-IMG0121 · rendered photo · quality: blurry
Image recognition read: 1785-L40B SER C
Read confidence 0.9 · overall 0.9 · reviewer not yet reviewed
Lifecycle source and alternatives
PLC-5/40 processor
Official successor: 1756-L81E
Source (secondary): https://industrialmonitordirect.com/blogs/knowledgebase/allen-bradley-…
- 1756-L81E · successor · migration: new firmware/program conversion, wiring and mounting check