1756-A4 Allen Bradley

Description

Product Name: 1756-A4  Allen Bradley Processor module

Product details:

The Allen-Bradley 1756-A4 is a 4-slot ControlLogix chassis designed for industrial automation applications. It serves as the backbone for a ControlLogix system, providing power and a high-speed communication path between various modules like controllers, I/O modules, and communication modules.

Product Details

The 1756-A4 chassis is an integral part of Rockwell Automation’s ControlLogix platform. It’s an “open-type” equipment, meaning it must be mounted within a suitable enclosure to protect it from environmental conditions and prevent access to live parts.

• Manufacturer: Rockwell Automation / Allen-Bradley
• Series: ControlLogix
• Type: Standard Chassis
• Number of Slots: 4

Product Parameters (Specifications)

• Mounting: Sub-panel, Horizontal only
• Dimensions (Approximate):
  • Height: 14.0 cm (5.51 in.)
  • Width: 7.8 cm (3.07 in.)
  • Depth: 14.5 cm (5.71 in.)
  • Minimum Enclosure Size (HxWxD): 50.8 x 50.8 x 20.3 cm (20 x 20 x 8 in.)
• Weight: Approximately 0.75 kg (1.7 lb)
• Backplane Current:
  • 1.2 Volts DC: 1.5 Amps
  • 3.3 Volts DC: 4 Amps
  • 5.1 Volts DC: 15 Amps
  • 24 Volts DC: 2.8 Amps
• Power Dissipation: Maximum 4 Watts
• Power Consumption: 1.8 Watts
• Cooling: Convection
• Enclosure: None (Open-style)
• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Storage Temperature: -40 to 85 °C (-40 to 185 °F)
• Certifications: CCC, CE, CSA, CUL, KC, MARINE, NRTL, RCM, UL (Note: Always verify specific product certifications for your region and application.)

Product Advantages

• Modular and Scalable: The chassis provides a flexible platform for building and expanding automation systems by allowing various ControlLogix modules to be added or removed as needed.
• High-Speed Communication: It offers a high-speed backplane for efficient data exchange between the modules, crucial for demanding industrial applications.
• Removal and Insertion Under Power (RIUP): This feature allows for easy maintenance and module replacement without having to shut down the entire system, minimizing downtime.
• Electronic Keying: Prevents incorrect module replacement by ensuring that only compatible modules are inserted into specific slots, reducing the risk of errors and damage.
• Comprehensive Diagnostics: The 1756-A4 includes diagnostic features that aid in identifying faults, simplifying troubleshooting and maintenance.
• Time Stamping Capabilities: Useful for Sequence of Events (SOE) applications, providing precise timing for critical events.
• Robust Design: Built for industrial environments, ensuring reliable operation in demanding conditions.

Precautions and Important Notes

• Enclosure Requirement: As “open-type” equipment, the 1756-A4 must be installed within a suitable industrial enclosure to protect it from environmental conditions (dust, moisture, etc.) and to prevent personal injury from access to live parts. The enclosure should have appropriate flame-retardant properties.
• Electrostatic Discharge (ESD) Sensitivity: This equipment is highly sensitive to ESD. Always follow proper ESD handling procedures, including touching a grounded object, wearing an approved grounding wrist strap, avoiding touching connectors or circuit components, and storing the equipment in static-safe packaging when not in use.
• Removal and Insertion Under Power (RIUP) Caution: While RIUP is a feature, repeated electrical arcing during insertion or removal can cause excessive wear to contacts. In hazardous locations, ensure power is removed or the area is non-hazardous before disconnecting equipment to prevent an explosion risk.
• Wiring: The 1756-A4 typically requires an RTB (Removable Terminal Block) or Bulletin 1492 Wiring IFM (Interface Module) for connecting field-side wiring.
• Environmental Considerations: The equipment is not resistant to direct sunlight or other sources of UV radiation.
• Component Substitution: Substituting components may impair suitability for specific hazardous classifications (e.g., Class I, Division 2). Always use approved components.
• Battery Replacement: If the product contains batteries (e.g., on a controller module within the chassis), they must only be changed in a non-hazardous area.
• Electromagnetic Compatibility (EMC): This is Group 1, Class A industrial equipment. In residential or other environments, appropriate precautions may be needed to ensure electromagnetic compatibility.

Product Applications

The Allen-Bradley 1756-A4 ControlLogix chassis is widely used in various industrial automation applications due to its flexibility and performance. Typical applications include:

• Process Control: Managing and automating processes in industries such as oil and gas, chemical, pharmaceutical, and food and beverage.
• Discrete Manufacturing: Controlling machinery and assembly lines in automotive, packaging, and electronics manufacturing.
• Material Handling: Automating conveyor systems, robotic cells, and warehousing operations.
• Building Automation: Managing HVAC systems, lighting, and security in large commercial and industrial buildings.
• Power Generation and Distribution: Monitoring and controlling power plants and electrical grids.
• Water and Wastewater Treatment: Automating pump stations, filtration systems, and treatment processes.
• Batch Control: Implementing complex sequential control in various industries.

Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!

We have the same series of models in stock.  If you don’t find the model you need, please contact us and we will provide you with an official quotation！

Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
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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