Allen-Bradley Obsolete PLC · Sourcing · Replacement
Allen-Bradley SLC 500 (1747) Sourcing & Replacement Support
The SLC 500 family still runs thousands of production lines, and plants need working processors, I/O and power supplies to keep them alive. Star Automations supports sourcing of SLC 500 hardware and replacement planning.
What is the SLC 500 family?
The Allen-Bradley SLC 500 is a modular PLC platform using 1747-series processors (including the 1747-L5xx / SLC 5/05 range) with 1746-series I/O, chassis and power supplies. A very large installed base remains in service worldwide because machines were built around it and continue to run.
Why sourcing demand exists now
- Rockwell Automation announced the end of SLC 500 manufacturing, with final production / discontinuation communicated from 31 March 2024 (per ProSoft Technology’s discontinued-product notice, fetched 2026-09-02).
- The 1747-L551, 1747-L552 and 1747-L553 processors are named among the most in-demand obsolete SLC 500 parts (per US Control Tech’s SLC 500 resources, fetched 2026-09-02).
- Rockwell’s own migration direction for SLC 500 systems is the CompactLogix 5380 platform — a migration project, not a drop-in swap.
No stock, price or availability is claimed on this page — availability is confirmed per request.
Your routes with Star Automations
Sourcing path
Request a search for processors (e.g. 1747-L551 / L552 / L553), 1746 I/O modules, chassis or power supplies. The exact catalog number from the module faceplate drives the search.
Replacement path
If the platform must move on, a migration to a current Rockwell platform (CompactLogix 5380 is Rockwell’s published direction) is an engineering project. Star Automations can support the review — it is not treated as a drop-in sale.
Repair path
For a faulty processor or module, a repair evaluation is available. Send the catalog number and the fault behaviour; repairability is confirmed per unit.
What to send for a quote
The exact catalog number printed on the module faceplate (e.g. 1747-L551) is essential, plus the series/revision if visible, quantity needed, and your application. Photos of the faceplate can be sent through WhatsApp below.
SLC 500 / 1747 — answers
Is the SLC 500 discontinued?
Yes. Rockwell announced final manufacture of the SLC 500 family with discontinuation communicated from 31 March 2024 (ProSoft Technology notice, fetched 2026-09-02), and points SLC users toward CompactLogix 5380 for new systems.
Can you source a 1747-L551 processor?
Sourcing is confirmed per request. Send the exact catalog number and Star Automations will search its sourcing network; no stock is claimed on this page.
Do you supply 1746 I/O modules and power supplies?
1746-series I/O, chassis and power supplies can be included in a sourcing request. Each item is confirmed individually before any commitment.
What is the replacement path for SLC 500?
Rockwell’s published migration direction is the CompactLogix 5380 platform. Migrating is an engineering project — Star Automations can support the review and planning.
What information do you need for a quote?
The exact catalog number from the module faceplate, series/revision if visible, quantity and application details. A faceplate photo via WhatsApp is the fastest way to start.
Looking for another part? Search the catalogue by part number, brand or model, browse the shop home, or ask Ask Star AI for guidance.
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