Brand:Allen Bradley PLC Item No.:1785-L60L Product Origin:USA Product Dimensions:165 x 51 x 89 mm Product Weight:1.42 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen Bradley 1785-L60L PLC-5/60 Processor is a high-capacity industrial controller designed for complex and large-scale automation systems. As part of the PLC-5 family, it serves as the central processing unit for distributed control architectures, coordinating multiple I/O racks and industrial communication networks. It remains widely deployed in installed base environments where long-term operational stability and compatibility are essential.
Technical Specifications
Category
Specification
Product Series
PLC-5
Model
1785-L60L
Processor Type
PLC-5/60 Extended Controller
User Memory
64K words SRAM
Maximum I/O Capacity
Up to 3072 total I/O
I/O Chassis Support
Up to 81 chassis (system dependent)
Communication Ports
DH+, Remote I/O, RS-232/RS-422/RS-423
Backplane Current Load
~3.3 A @ 5 VDC
Power Dissipation
~12 W (typical PLC-5/60 class)
Operating Temperature
0 to 60 °C
Dimensions
165 × 51 × 89 mm
Weight
1.42 kg
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PLC-5/60 Standard Processor Variant
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Applications
• Large-scale legacy process automation systems
Widely used in continuous production industries such as chemicals, power generation, and water treatment where PLC-5 architecture remains in operation.
• High-capacity factory control systems
Acts as a central controller for complex manufacturing lines with multiple racks and distributed I/O configurations.
• Material handling and plant-wide logistics control
Supports coordinated operation of conveyors, storage systems, and automated logistics networks.
• Heavy industrial environments
Common in steel, cement, oil & gas, and other demanding sectors requiring long-life control platforms.
• Retrofit and installed-base expansion projects
Used to maintain and extend existing PLC-5/60 systems without redesigning the full automation architecture.
Key Advantages
• High-performance PLC-5/60 processing capability
Designed for complex control logic with improved scan performance and system responsiveness.
• Large memory capacity for demanding applications
Supports up to 64K words of user memory for advanced control programs and data handling.
• Extensive I/O scalability
Capable of managing large distributed I/O architectures across multiple chassis systems.
• Multi-protocol industrial communication
Supports DH+, Remote I/O, and serial communication interfaces for legacy integration.
• Proven long-term industrial reliability
Engineered for continuous operation in mission-critical environments with minimal downtime.
• Flexible system expansion options
Compatible with a wide range of PLC-5 family modules and network configurations.
Technical FAQs
1. What is the main function of the 1785-L60L?
It is a PLC-5/60 processor used to control large-scale industrial automation systems.
2. How much user memory does it support?
It supports up to 64K words of SRAM user memory.
3. What communication interfaces are available?
It supports DH+, Remote I/O, and RS-232/RS-422/RS-423 serial communication.
4. How many I/O points can it handle?
It can support up to 3072 total I/O points depending on configuration.
5. Is it suitable for new automation projects?
No, it is primarily used for maintaining and upgrading legacy PLC-5 systems.
6. Can it connect multiple I/O racks?
Yes, it supports distributed multi-rack and extended chassis architectures.
7. Does it support Ethernet communication natively?
Not natively; Ethernet requires additional communication modules.
8. What industries commonly use this processor?
Process industries, utilities, and heavy manufacturing sectors.
9. Is programming still supported?
Yes, via legacy Rockwell PLC-5 programming environments.
10. Does it support redundancy?
Redundancy is limited and depends on system-level design rather than built-in CPU features.
