Allen-Bradley 1747-L551/D SLC 5/05 Processor Module
$123.00
$320.00
Description
Allen-Bradley 1747-L551/D SLC 5/05 Processor Module
The Allen-Bradley 1747-L551/D, also cataloged as the 1747-L551 processor module, serves as the primary SLC 5/05 CPU unit utilized to execute deterministic control logic processing across SLC 500 chassis-based automation platforms.
Configured for Ethernet-based control execution in SLC 500 architectures, the Allen-Bradley 1747-L551/D (1747-L551 processor module) provides direct scan-cycle computation and memory-resident program execution through embedded RS-232 and Ethernet communication interfaces.
Suffix Breakdown & Model Matrix
The suffix “/D” indicates a revision-level hardware or firmware iteration within the 1747-L551 lifecycle. No further functional segmentation is defined in the provided dataset. No additional option codes are specified.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1747-L551/D |
| Brand | Allen-Bradley |
| Weight | 0.31 kg |
| Dimensions | 3.2 cm x 14.6 cm x 12.7 cm |
| Operating Temp | 0 - 60 deg C |
| Power Consumption | 4 W |
| Memory Capacity | 64 K words |
| Max Digital I/O | 8192 |
| Max Analog I/O | 480 |
| Communication Ports | RS-232, Ethernet |
| Scan Time | ~0.9 ms/K |
Allen-Bradley SLC 5/05 Backplane & Ethernet Execution Characteristics
The SLC 5/05 CPU integrates backplane-resident execution scheduling, where instruction handling is synchronized through chassis-level bus arbitration. Ethernet communication operates over TCP/IP with deterministic frame handling for PLC-to-SCADA data exchange. Firmware execution is tied to fixed-cycle scan processing, limiting variability in instruction throughput under stable load conditions. Memory segmentation supports program, data table, and communication buffers within a 64 K words architecture.
Frequently Asked Questions (FAQ)
Q: Does the 1747-L551/D support hot-swap removal during operation?
A: No. The SLC 500 CPU modules are not designed for live insertion or removal under energized backplane conditions.
Q: What is the Ethernet communication behavior under heavy I/O load?
A: Ethernet TCP/IP messaging shares CPU scan resources; increased I/O density may increase communication latency due to scan cycle contention.
Q: Is firmware compatible across all SLC 5/05 revisions?
A: Firmware compatibility is revision-dependent; mismatch between CPU firmware and programming tools may prevent successful download or online edits.
Field Installation Guidelines
The module shall be installed into a powered-down SLC 500 chassis only. Ensure full seating into the backplane connector before applying chassis power. Maintain separation between Ethernet cabling and high-noise motor or relay wiring to reduce signal interference. RS-232 programming port shall be used with shielded cable where long programming links are required. Grounding continuity of the chassis must be verified prior to commissioning to ensure stable communication referencing.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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