Product Overview
The Allen-Bradley 1756-L64 is a ControlLogix Logix5564 processor module engineered for high-performance industrial automation. As part of the ControlLogix family, this processor delivers 16 MB of user memory and 478 KB of I/O memory, making it a robust solution for complex control applications. Designed for flexibility, the 1756-L64 supports a maximum of 128,000 digital I/O points and 4,000 analog I/O channels, ensuring it can handle large-scale processes with ease.
Key Technical Specifications
Every parameter of the Allen-Bradley 1756-L64 is precisely engineered to meet demanding industrial requirements. Below are the core specifications:
| Specification |
Value |
| Part Number |
1756-L64 |
| Series |
ControlLogix |
| Module Type |
Processor Module |
| I/O Memory |
478 Kilobytes |
| User Memory |
16 MB |
| Maximum I/O |
128,000 |
| Maximum Analog I/O |
4,000 |
| Maximum Digital I/O |
128,000 |
| Current Draw (5.1V DC) |
1200 mA |
| Current Draw (24V DC) |
14 mA |
| Power Dissipation |
3.5 Watts |
| Thermal Dissipation |
11.9 BTU/hr |
| Isolation Voltage |
30 Volts Continuous |
| Enclosure |
None |
Performance and Capabilities
The Allen-Bradley 1756-L64 supports up to 250 controller connections, providing ample capacity for distributed control architectures. It offers full controller redundancy for enhanced system reliability, ensuring minimal downtime in critical processes. The processor handles three task types: 100 programs per task, 32 tasks, and event tasks with all event triggers, allowing flexible programming to meet diverse application needs.
For communication, the 1756-L64 supports serial protocols including DH-485, DF1 full/half-duplex, DF1 radio modem, ASCII, and Modbus via logic. It also integrates with major networks such as EtherNet/IP, Data Highway Plus, SynchLink, DeviceNet, ControlNet, Remote I/O, and third-party process networks. This broad connectivity ensures seamless integration into existing industrial environments.
Compatibility and Integration
This processor is compatible with ControlLogix chassis models 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17. For non-volatile memory expansion, an optional CompactFlash card is supported, with the 128 MB 1764-CF128 being the only compatible model. The user-replaceable battery (1756-BA2) provides backup power for memory retention when needed.
When planning your control system, ensure the 1756-L64 meets your I/O and memory requirements. Its high I/O capacity and robust communication options make it suitable for large-scale manufacturing, process control, and infrastructure automation.
Installation and Setup
Install the Allen-Bradley 1756-L64 into any compatible ControlLogix chassis. Ensure the chassis is powered down before insertion. Align the module with the backplane connector and firmly seat it until the locking mechanism engages. Connect the required communication cables and verify that the module is properly recognized by the programming software. Always follow the manufacturer's guidelines for safe and reliable operation.
Maintenance and Reliability
Routine maintenance of the 1756-L64 is straightforward. Periodically inspect the module for dust accumulation and ensure adequate airflow around the chassis. The operating temperature range is 0 to 60°C, with a storage range of -40 to 85°C. The module is designed for long service life, but battery replacement should be performed only when necessary, using the specified 1756-BA2 lithium battery. The module withstands vibration up to 2 g at 10-500 Hz, and shock up to 30 g operating and 50 g non-operating, ensuring durability in harsh industrial settings.
Selection Guide
When selecting the Allen-Bradley 1756-L64 for your project, verify that your application's I/O count and memory requirements fall within the stated limits. Confirm compatibility with your existing ControlLogix chassis and communication networks. For reliable sourcing, consider PLC Source PRO as your trusted supplier for genuine industrial automation parts.