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Allen-Bradley SLC 500 PLC Controllers
Allen-Bradley SLC 500 PLC Controllers - Image 2
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Allen-Bradley SLC 500 PLC Controllers

Manufacturer: Allen Bradley
Model: MY Series General Purpose Relays (GS-R Track Mountable)
Contact Rating: 10A at 250VAC (DPDT) / 5A (4PDT)
Coil Voltage: 12-240VAC/DC (model-specific)
Socket Type: P2RF-PU with GS-R DIN track mounting
Protection Rating: RT III (general purpose)
Application: Industrial control panels and automation

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Product Description

The Allen-Bradley SLC 500 family (1747 series) is the legendary modular small PLC platform that powered factories worldwide from the 1990s to the 2020s. With processors ranging from the basic SLC 5/01 (DH485 only) to the powerful SLC 5/05 with built-in Ethernet, it offers unmatched flexibility through a vast ecosystem of I/O, communication, and specialty modules. Even though officially obsolete since 2017, millions of SLC 500 systems remain in operation thanks to Rockwell’s long-term support, making it the most enduring small PLC ever built.

Standard Features

  • True modular architecture: Mix any combination of digital, analog, and specialty modules in up to 3 chassis (30 slots total).

  • Rock-solid reliability: Proven in the toughest environments for over 30 years – still running in countless plants today.

  • Universal programming: RSLogix 500 software with ladder, function block, and structured text – same code runs on all processors.

  • Massive installed base: Largest spare parts availability and third-party support of any legacy PLC platform.

  • Future-proof migration path: Direct upgrade to CompactLogix 5380/5370 with 1747-AENTR adapter – keep existing I/O wiring.

Technical Specifications

ProcessorMemory (KB)CommunicationMax Local I/O
SLC 5/011K or 4KDH485 only960
SLC 5/024KDH485 + Remote I/O960
SLC 5/038K / 16K / 32KDH485, DH+, Remote I/O960
SLC 5/0416K / 32K / 64KDH+ (high-speed)960
SLC 5/0516K / 32K / 64K10/100 Mbps Ethernet960

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