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Allen-Bradley 1747-L552 SLC 5/05 Ethernet Processor
Allen-Bradley 1747-L552 SLC 5/05 Ethernet Processor
Brand/Manufacturer: Allen-Bradley
Order Number: 1747-L552
Type: PLCs
Country of Origin: Sweden
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The Allen-Bradley 1747-L552 is an SLC 5/05 central processing unit engineered for medium-to-large industrial control applications within the SLC 500 platform. It features 32K words of total user memory—structured as 28K words for program/data storage and 4K words dedicated strictly to data allocation. Equipped with an embedded 10/100 Mbps Ethernet port and an RS-232 serial port, this processor provides direct plant-network connectivity and execution of high-density discrete and analog I/O control schemes.
I/O Addressing and Executive Processing
The controller supports a maximum capacity of 4096 discrete inputs and 4096 discrete outputs across a local 1746 chassis setup. It accommodates up to 480 local analog inputs and outputs across up to 3 local chassis or 30 total slots. With a typical program scan time of 0.9 ms per Kword and an I/O scan time of 0.225 ms, it processes rapid logical decisions and field device updates.
System Power and Memory Safeguards
The module draws a maximum backplane load current of 1 A at 5 VDC and operates via power supplied by the 1746 chassis backplane. Its total heat dissipation is rated at 4 Watts, minimizing cabinet thermal buildup during continuous operation. Volatile memory is retained via a user-replaceable 1747-BA battery, while non-volatile program backup can be implemented using an optional 1747-M13 Flash EPROM module.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Model | 1747-L552 |
| Product Line | SLC 500 |
| Processor Series | SLC 5/05 |
| Total User Memory | 32K Words |
| User Memory Breakdown | 28K Words (Program/Data), 4K Words (Data Only) |
| Max Discrete I/O Capacity | 4096 Inputs / 4096 Outputs |
| Max Local Analog I/O | 480 |
| Communication Interfaces | Ethernet (10/100 Mbps), RS-232 (DF1/DH-485) |
| Typical Program Scan Time | 0.9 ms per Kword |
| Typical I/O Scan Time | 0.225 ms |
| Backplane Current Load | 1 A at 5 VDC (0 A at 24 VDC) |
| Power Dissipation | 4 Watts |
| Chassis Expansion Limits | Up to 3 local chassis / 30 slots |
| Backup Memory Options | 1747-BA Battery, 1747-M13 Flash EPROM |
| Weight | 1.31 lbs (0.60 kg) |
Frequently Asked Questions
Q: How is memory partitioned in the Allen-Bradley 1747-L552 controller?
A: The total 32K words of memory are divided into 28K words for program instructions or data storage and 4K words strictly reserved for data file tables.
Q: How does the 1747-L552 draw power inside an SLC 500 rack?
A: The processor draws 1 A at 5 VDC directly from the 1746 backplane power supply and does not draw current from the 24 VDC rail.
Q: What communication ports are available directly on the front panel of the 1747-L552 processor?
A: It features an embedded Ethernet port for network communication alongside an RS-232 serial port for DF1 or DH-485 protocol connections.
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Testimonials
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We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
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Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
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We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
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We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson