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Obsolete Allen-Bradley Parts Sourcing

End-of-life Allen-Bradley models, sourced globally and tested before shipping.

Overview

Allen-Bradley retired the SLC 500 and PLC-5 platforms years ago and has since moved the installed base to CompactLogix / ControlLogix — but thousands of SLC 500 racks still run automotive lines, water plants and OEM machines. TGK Parts sources obsolete Allen-Bradley parts from a global surplus network: verified dealers, decommissioned stock and integrator inventories.

Send the catalogue number or a nameplate photo (e.g. 1746-IB16, 1785-L40E). We reply within 12 hours with availability, condition grade and price, bench-tested before shipping.

Discontinued Models We Source

SLC 500DiscontinuedCPU 5/01, 5/02, 5/03, 5/04, 5/05; I/O 1746 series; power supply 1746-P1/P2/P3/P4
PLC-5DiscontinuedCPU 1785-L11B/L20B/L30B/L40B/L60B/L80B, Ethernet 1785-ENET
ControlLogix (early)Revisions replaced1756-L1/L55/L61 early revs, 1756-IB16/OB16, 1756-ENBT adapters
PowerFlex 4 / 40 / 70Discontinued22A/22B, 22D (Class 4), 20A/20B (Class 70), incl. HIM panels
PanelView Standard / Plus / 1000Discontinued2711-B5A / 2711-K / 2711-T series, keypads, membranes
CompactBlock / FLEX I/O legacyDiscontinued1794 I/O, 1734 Point I/O legacy revisions, 1769 early MicroLogix

How Sourcing Works

  1. Send the model number or a nameplate photo — we confirm the exact revision
  2. Global sourcing — verified surplus dealers, decommissioned stock and integrator inventories are queried within hours
  3. Quote within 12 hours — availability, condition grade, price and lead time
  4. Test and ship — bench-tested before shipping, with photos and a 12-month warranty

Related Pages

FAQ

Can you source SLC 500 CPUs like the 1747-L551?

Yes — SLC 500 CPUs and I/O are a core sourcing line. Send the full catalogue number or a nameplate photo for a quote within 12 hours.

Is a used SLC 500 module safe to install?

Our obsolete AB stock is bench-tested (power-up, I/O forcing, comms check) before shipping and carries a 12-month warranty.

Do you still supply PanelView 1000 parts?

Yes — complete panels plus keypads and membrane overlays for the 2711 series are in regular sourcing rotation.

PowerFlex 4 or PanelView — can you quote both in one request?

Yes, mixed lists are fine. One email gets you availability and pricing for all catalogue numbers.

What if my SLC 500 CPU cannot be found?

We propose alternatives within the first update cycle: a compatible revision, tested refurbished exchange, or an engineered migration path with our engineering team.