Description
2098-DSD-075-SE Allen‑Bradley Central control module
Product Dimensions：
Product Detailed Description
The Allen-Bradley Central Control Module refers to the core processor modules within the ControlLogix® family of programmable logic controllers (PLCs) and programmable automation controllers (PACs) from Rockwell Automation. These modules serve as the “brain” of large-scale industrial control systems, providing centralized processing, data handling, and coordination for complex automation tasks. Introduced in 1997, ControlLogix processors (e.g., 1756-L7x series) build on legacy platforms like PLC-5 and SLC 500, offering rack-based architecture with enhanced speed, memory, and scalability. They use Producer/Consumer technology to enable efficient data sharing across multiple controllers and I/O modules via networks like EtherNet/IP, ControlNet, and DeviceNet. The system supports modular chassis configurations, allowing integration of digital, analog, motion control, and specialty I/O for distributed or multi-processor setups.
Product Parameters
The following table summarizes key parameters for representative ControlLogix central processor modules (e.g., 1756-L71, 1756-L73, 1756-L76). Specifications vary by model; consult Rockwell Automation documentation for exact variants.
| Parameter | 1756-L71 (Logix5571) | 1756-L73 (Logix5573) | 1756-L76 (Logix5576) |
|---|---|---|---|
| User Memory | 2 MB | 8 MB | 64 MB |
| I/O Memory | 0.98 MB | 1.5 MB | 0.98 MB |
| Processing Speed | High-speed (double that of L6 series) | High-speed (double that of L6 series) | High-speed (double that of L6 series) |
| Tasks/Programs | 32 tasks, 100 programs/task | 32 tasks, 100 programs/task | 32 tasks, 100 programs/task |
| Ports | 1x USB 2.0, Ethernet/IP (via adapter) | 1x USB 2.0, Ethernet/IP (via adapter) | 1x USB 2.0, Ethernet/IP (via adapter) |
| Supported Networks | EtherNet/IP, ControlNet, DeviceNet, DH+, RIO, SynchLink | Same as L71 | Same as L71 |
| Power Consumption | 800 mA @ 5.1V DC, 2.5W dissipation | 800 mA @ 5.1V DC, 2.5W dissipation | 800 mA @ 5.1V DC, 2.5W dissipation |
| Thermal Dissipation | 8.5 BTU/hr | 8.5 BTU/hr | 8.5 BTU/hr |
| Dimensions (H x W x D) | 14.0 cm x 15.2 cm x 3.2 cm | 14.0 cm x 15.2 cm x 3.2 cm | 14.0 cm x 15.2 cm x 3.2 cm |
| Weight | 2.3 kg | 2.3 kg | 2.3 kg |
| Operating Temperature | 0–60°C (32–140°F) | 0–60°C (32–140°F) | 0–60°C (32–140°F) |
| Storage Temperature | -40–85°C (-40–185°F) | -40–85°C (-40–185°F) | -40–85°C (-40–185°F) |
| Certifications | EMC, RoHS, SIL 2/3 (with safety variants), ATEX (optional) | Same as L71 | Same as L71 |
| Mounting | Chassis-based (any slot in 1756 chassis) | Chassis-based (any slot in 1756 chassis) | Chassis-based (any slot in 1756 chassis) |
Product Advantages
- Scalability and Flexibility: Supports up to multiple CPUs in a single chassis for distributed control, spanning small to large applications with easy integration of I/O, motion, and safety modules.
- High Performance: Faster scan times, expanded memory (up to 64 MB user memory), and advanced communication reduce latency in complex systems.
- Enhanced Security and Safety: Integrated SIL 2/3 certifications for process and hybrid safety, plus embedded security features for plant-wide protection.
- Cost Efficiency: Producer/Consumer model minimizes wiring and enables real-time data sharing, lowering operational costs; compatible with Studio 5000 Logix Designer® for streamlined programming.
- Reliability: Removal and Insertion Under Power (RIUP) allows hot-swapping without downtime; robust for harsh environments with XT variants.
- Interoperability: Seamless compatibility with Allen-Bradley ecosystems and third-party modules via EtherNet/IP and gateways.
Precautions/Notes
- Installation: Modules must be installed in a compatible 1756 ControlLogix chassis with a standard power supply. Use removable terminal blocks (RTBs) or 1492 interface modules (IFMs) for field wiring—sold separately. Ensure proper grounding to avoid electromagnetic interference (EMI).
- Environmental: Operate within 0–60°C and 5–95% non-condensing humidity; avoid direct sunlight or corrosive atmospheres. For hazardous locations, use certified enclosures.
- Programming: Requires Studio 5000 Logix Designer® software (not RSLogix 5000 for L7+ models). Firmware updates must match application needs; mismatched firmware may cause incompatibility.
- Maintenance: Monitor power dissipation to prevent overheating (e.g., 2.5W max per module). RIUP is supported, but power down for non-RIUP modules. Backup configurations regularly to avoid data loss.
- Discontinued Products: Certain legacy modules (e.g., 1756 isolated analog I/O 6-channel) are discontinued as of March 31, 2017—verify availability.
- Safety: For safety-rated applications, enable GuardLogix variants; consult Rockwell Automation for SIL compliance.
Product Applications
Allen-Bradley Central Control Modules excel in demanding industrial environments requiring centralized oversight. Key applications include:
- Factory Automation: Coordinating assembly lines, robotics, and material handling in automotive or consumer goods manufacturing.
- Process Control: Managing batch processing, mixing, and packaging in food/beverage, pharmaceuticals, and chemicals.
- Machine Control: High-speed discrete control for packaging machines, conveyors, and CNC systems.
- Energy and Utilities: SCADA integration for power distribution, water treatment, and oil/gas monitoring.
- Safety Instrumented Systems (SIS): Hybrid safety in refineries or heavy industry, achieving SIL 2/3 certification.
- Distributed Systems: Plant-wide control across multiple sites via EtherNet/IP, suitable for large-scale warehouses or mining operations.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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