Allen-Bradley 1747-L552 SLC 500 4096 I/O PLC Processor

Availability: 20 left in stock

Product Overview The Allen-Bradley 1747-L552 serves as a cornerstone hardware solution for medium-to-large industrial automation systems. This SLC 5/05 central...

SKU: 1747-L552

Manufacturer: Allen Bradley
Product No.: 1747-L552
Product Type: Industrial Automation Controllers
Product Origin: USA
Payment:T/T, Western Union
Weight: 650g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen-Bradley 1747-L552 serves as a cornerstone hardware solution for medium-to-large industrial automation systems. This SLC 5/05 central processing unit delivers high-speed processing capabilities and scalable architecture across plant-wide networks. It utilizes 32 KB of total user memory to manage dense calculation tasks and extensive I/O structures. The integrated 10/100 Mbps Ethernet port enables direct Information Internet of Things (IIoT) connectivity, bypassing the need for separate communication modules. This 100% brand new, factory-original controller optimizes throughput in fast-paced production environments, including high-speed packaging, automated material handling, and complex HVAC networks.

Technical Specifications

Parameter	Specification Value
Manufacturer	Allen-Bradley / Rockwell Automation
Product Line	SLC 500 Series
Model Number	1747-L552
Processor Type	SLC 5/05 Controller
Total User Memory	32K Words (32,000 words battery-backed RAM)
Memory Allocation	28K Words for Programming / 4K Words for Data Only
Local I/O Capacity	4096 Discrete Points
Remote I/O Capacity	4096 Inputs and 4096 Outputs
System Analog I/O	Up to 480 Points
Maximum Chassis Slots	30 Slots across a maximum of 3 Chassis
Program Scan Time	0.9 ms per Kword (typical)
I/O Scan Time	0.225 ms (typical)
Communication Ports	1 x Ethernet RJ45 (10/100 Mbps), 1 x RS-232 Channel 0 (DF1, DH-485, ASCII)
Programming Software	RSLogix 500, RSLinx
Memory Backup	Flash EPROM (1747-M13), Lithium Battery (1747-BA)
Power Supply Load Current	1 Amp at 5V DC, 200 mA at 24V DC
Power Loss Hold-up Time	20 milliseconds to 3 seconds (dependent on load)
Heat Dissipation	4 Watts total
Operating Temperature	0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)
Storage Temperature	-40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit)
Ambient Humidity	5 to 95 percent non-condensing
Operational Shock	30G peak acceleration
Noise Immunity	NEMA Standard ICS 2-230
Agency Certifications	UL, CE, RINA, UKCA

Engineering Advantages

Eliminate Network Bottlenecks: The on-board 10/100 Mbps Ethernet port transfers operational data at native backplane speeds. It feeds data directly to supervisory control systems, HMI hardware, and enterprise databases without requiring slow, external network bridges.
Maximize Panel Space Utilization: The modular chassis-mount construction drops directly into standard SLC 500 racks. This design packs control for up to 8192 total digital I/O points into a tight physical footprint, which saves premium real estate inside control enclosures.
Protect Volatile Data Profiles: A replaceable lithium battery pairs with optional non-volatile Flash EPROM chips. This redundant safety pairing prevents costly program corruption or register loss during sudden plant power blackouts.
Mitigate Electrical Noise Disruption: Built to pass strict NEMA ICS 2-230 standards, the internal circuitry filters out high-frequency electromagnetic interference (EMI). This heavy industrial shielding guarantees continuous, un-faulted operation near high-power motor drives and heavy switching relays.
Accelerate Math Execution: The CPU instruction set natively executes indirect addressing and advanced floating-point math variables. This processing efficiency cuts overall scan cycles down to 0.9 ms per Kword, allowing tight control loops over high-speed assembly and indexing mechanics.

FAQs

Can the 1747-L552 replace an older SLC 5/04 or SLC 5/03 processor directly?

Yes. The 1747-L552 drops into the same physical slot (Slot 0) of any standard SLC 500 chassis. However, since the 1747-L552 replaces DH+ or DH-485 communication ports with an Ethernet port, engineers must reconfigure the communication path in the RSLogix 500 program before executing a project download.
What action prevents program loss when replacing the backup battery?

Keep the SLC 500 chassis powered up during battery replacement to preserve data in the volatile RAM. If you must replace the battery while the unit lacks chassis power, complete the physical exchange within 30 minutes; the internal capacitor holds data temporarily to prevent memory wipe.
Does this unit arrive with factory-sealed packaging?

We supply this item as a 100% brand new, original factory-sealed unit. It includes all official Allen-Bradley quality inspections, original internal packaging inserts, and fresh backup batteries straight from industrial distribution storage.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.