Product Summary
The 1785-L80E delivers powerful control for large automation systems. This Ethernet PLC-5 processor handles complex discrete and analog tasks. It executes PID algorithms and supports a maximum of 93 I/O chassis. Its 100K words SRAM memory maintains user programs effectively.
Product Procurement & Buyer Guide
This section helps engineers select the right controller. It aligns technical specs with real-world application needs. The 1785-L80E solves critical industrial control challenges efficiently. It provides a scalable platform for demanding manufacturing environments.
Understanding the Memory and Backup Options
The controller uses a 1770-XYC battery for volatile memory retention. You may install EEPROM modules like the 1785-ME64 as non-volatile backup. This prevents program loss during power outages or maintenance periods. The SRAM stores up to 100K words for complex logic. This capacity supports extensive program and configuration data storage.
Evaluating I/O Capacity and Scan Times
The processor supports a maximum of 3072 total I/O points. It scans a remote I/O rack at 3ms using 230.4 kbps transfer speed. This rapid scanning ensures precise control of fast processes. The controller handles 8, 16, and 32-point I/O modules flexibly. It supports three distinct chassis addressing modes for versatile configuration.
Communication Ports for Network Integration
The 1785-L80E includes one dedicated 15-pin Ethernet communication port. It also features two DH+ or Remote I/O scanner ports. An RS-232-C, 422-A, and 423 serial port provides additional connectivity. These ports enable simultaneous communication with multiple industrial devices. This capability integrates the controller into various network topologies easily.
Expert Technical Evaluation & Performance Review
This section provides a strict critique of the controller performance. We evaluate environmental tolerances and signal processing abilities. The 1785-L80E demonstrates robust engineering for harsh industrial sites. Its design meets strict certification standards for global use.
Environmental and Mechanical Durability
The unit operates reliably from 0 to 60°C without performance derating. It withstands 30G shock and 1G vibration at 10-500 Hertz. This resilience ensures long life in vibrating machinery applications. The open enclosure design weighs only 1.38 kg. These features make installation and maintenance straightforward for technicians.
Internal Clock and Power Characteristics
The internal circuit clock maintains accuracy within ±5 minutes per month. This precision supports time-sensitive control and data logging tasks. The module draws 3.6A from the 5 VDC backplane during operation. It dissipates 65 BTU/hour of heat when fully operational. This thermal output requires consideration for cabinet cooling design.
Certifications and Operational Compliance
The processor holds CSA, C-TICK, CE, and UL certifications. These approvals confirm compliance with international safety and emission standards. The controller supports connection to DH+ networks which are common in many facilities. It handles humidity levels from 5 to 95% non-condensing without issues. This compliance reduces risk for global system integrators and buyers.
