A-B 1756-A4 ControlLogix 4 Slots Chassis
A-B 1756-A4 ControlLogix 4 Slots Chassis
The **Allen‑Bradley 1756 ControlLogix** series is Rockwell Automation’s flagship modular **programmable automation controller (PAC)** platform, designed for high-performance, scalable control of discrete, process, motion, and safety applications in industrial automation.
### Core Architecture & System Components
- **Modular Chassis**: Install in 1756-A series chassis (4, 7, 10, 13, 17 slots) with a high-speed backplane for power and communication.
- **Controllers**: Ranges from 5500 to 5590 series (e.g., 1756-L72, 1756-L83, 1756-L95) with embedded Ethernet/USB ports, conformal coating options, and support for controller redundancy.
- **I/O Modules**: Digital (DC/AC), analog (voltage/current), specialty (high-speed counter, thermocouple/RTD), motion, and safety modules; many feature field diagnostics, electronic fusing, and isolation.
- **Power Supplies**: Redundant or single supply options for reliable backplane power distribution.
- **Communication**: Native EtherNet/IP (with CIP Security), ControlNet, DeviceNet, and third-party protocols; supports peer-to-peer and distributed I/O over industrial networks.
### Key Features & Capabilities
- **Unified Programming**: Studio 5000 Logix Designer environment for ladder logic, structured text, function blocks, and sequential function charts.
- **High Performance**: Fast scan times, large memory, and real-time data sharing via the backplane and EtherNet/IP.
- **Integrated Safety**: GuardLogix controllers and CIP Safety I/O modules for functional safety up to SIL 3/PL e.
- **Robust Diagnostics**: Onboard LED status, field-side diagnostics, and event sequence recording (SOE) for troubleshooting.
- **Maintenance Friendly**: Hot-swappable modules (RIUP), electronic keying to prevent errors, and removable terminal blocks (RTB/IFM) for quick wiring changes.
- **Ruggedization**: Standard (0–60°C) and XT/ZXT models (conformally coated) for harsh environments (–25–70°C, corrosive atmospheres).
### Typical Applications
Ideal for large-scale, high-availability systems in **oil & gas**, **water/wastewater**, **power generation**, **automotive manufacturing**, **material handling**, and **pharmaceuticals**.
Catalog Numbers 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K, 1756-A17, 1756-A17K, 1756-A7XT, 1756-A10XT
1756-A13 Module Rockwell ControlLogix 13-Bit Rack Base
1756-A17 Module Rockwell ControlLogix 17-Bit Rack Base
1756-A4 Module Rockwell ControlLogix 4 Position Rack Base
1756-A4LXT Module Rockwell ControlLogix XT 4 Position Rack Base
1756-A5XT Module Rockwell ControlLogix XT 5 Position Rack Base
1756-A7 Module Rockwell ControlLogix 7-Bit Rack Base
1756-A7LXT Module Rockwell ControlLogix XT 7 Position Rack Base
1756-A7XT Module Rockwell 1756 Extension Rack
1756-CFM Module Rockwell ControlLogix Combo Module
1756-CN2 Module Rockwell ControlLogix Communication Control
1756-CN2R Module Rockwell ControlLogix Communication Control
1756-CN2RXT Module Rockwell
1756-CNB Module Rockwell ControlLogix Communication Control
1756-CNBR Module Rockwell ControlLogix Communication Control
1756-DH485 Module Rockwell CONTROLLOGIX DH485 Communication Control
1756-DHRIO Module Rockwell ControlLogix Communication Control
1756-DHRIOXT Module Rockwell ControlLogix XT Module
1756-DMA31 Module Rockwell 1-Axis Module
1756-DMCF003 Module Rockwell 3M Optical Fiber Communication
1756-DMD30 Module Rockwell 1-Axis Control Unit
1756-DMD30K MODULE ROCKWELL 1-AX DRVCTRLSD3000 CONFOR
1756-DMF30 Module Rockwell 1-AXIS DRV CTRL RE SF30001-AXIS DRV CTRL
1756-DMF30K MODULE ROCKWELL 1-AX DRVCTRLSF3000 CONFOR
1756-DNB Module Rockwell Device Bridge/Scanner Module




Delivery:
Warranty:
All our products are covered by our own warranty.
Payment method:
Quick Quote: Receive price and availability today!
Replacing an electrical equipment unit in a plant is a complex task that requires careful planning and execution to ensure safety and minimize downtime. Here is a general step-by-step guide on how to replace electrical equipment in a plant:
Pre-Planning:
Safety Precautions:
Shutdown Procedures:
Disconnection:
Removal of Existing Equipment:
Installation of New Equipment:
Testing and Commissioning:
Documentation:
Training:
Startup:
Throughout the process, it’s important to work closely with a team that includes electrical engineers, technicians, and maintenance staff. Communication is key to a successful equipment replacement. Additionally, always adhere to local electrical codes and standards to ensure compliance and safety. If the task is beyond the expertise of in-house staff, consider hiring a professional contractor experienced in industrial electrical work.
Obtaining industrial automation programming software typically involves the following steps:
Identify Your Needs:
Research Software Options:
Contact Equipment Manufacturers:
Purchase or Download:
Academic or Evaluation Versions:
Open Source Options:
Licensing:
Training and Support:
Legal and Compliance:
Installation and Setup:
Here are some common ways to obtain industrial automation programming software:
Remember to keep your software updated to benefit from the latest features and security patches. Also, ensure that you have the necessary backup and recovery procedures in place to protect your programming work.
All new products and surplus products of the industrial intelligence industry, as well as the discontinued products of the original manufacturers. We are not an authorized distributor or representative of any of the above manufacturers (except for brand authorization). The trademarks, brand names and brands appearing in this agreement are the property of their respective manufacturers.
COPYRIGHT© 2003-2026 Copyrighted
Phone(WeChat/Whatsapp)
+086-181 4410 0983
No 1134 Jimei North Road,
Hong Kong Office:
Guan Tang District, Hong Kong,