Catalogue · SLC 500 processors (1747)
1747-L551
SLC 5/05 processor, 16 K memory, Ethernet. Allen-Bradley SLC 500 processors (1747).
Allen-BradleyProcessor / CPU1991–2019, discontinued
Specification
| Manufacturer part number | 1747-L551 |
|---|---|
| Manufacturer | Allen-Bradley |
| Product family | SLC 500 processors (1747) |
| Type | Processor / CPU |
| Description | SLC 5/05 processor, 16 K memory, Ethernet |
| Lifecycle | 1991–2019, discontinued |
Availability
1747-L551 is sourced from our vetted surplus and refurbishment network rather than held on a shelf, which is why we can offer parts the manufacturer no longer sells. Condition is confirmed in writing before you pay — new surplus, refurbished, or used and tested — and is stated on the invoice as a contractual term, never as marketing.
- Condition stated per item, in writing, before payment
- 30-day functional warranty on every item we supply
- Next business day despatch on confirmed stock, worldwide courier
- Payment in full before despatch — no account application, no credit check
If 1747-L551 cannot be found
These are the alternatives we would consider, with what each one actually costs you to fit. None of them is a blind swap — read the condition on each.
Larger capacity, same form factor — fits and behaves as a supersetFits and runs with no changes
SLC 5/05 with 32K memory in place of 16K. Same form factor, same Ethernet port, same wiring. The existing program fits unchanged. Confirm the OS firmware series matches what the program was built for.
Larger capacity, same form factor — fits and behaves as a supersetFits and runs with no changes
SLC 5/05 with 64K memory in place of 16K. Physically and electrically identical; the larger memory is a superset. Confirm OS firmware series.
About the SLC 500 processors (1747) family
Discontinued by Rockwell. Still running thousands of lines because a migration means rewriting the program and rewiring the panel. When an SLC processor dies there is no new-stock option at all.
Related SLC 500 processors (1747) parts
All SLC 500 processors (1747) parts we source →
Got one of these to sell?
If you are decommissioning a line and this is coming out of the panel, we buy it. The part you are about to scrap is the part another plant has a line stopped over. Tell us what you have →
Can't find the part you need?
The catalogue shows what we list, not the limit of what we source. If your part number is not here, send it to us anyway — most of what we supply is found for a specific customer rather than listed in advance.