Product Details
Overview
The Allen-Bradley 1785-L40E is a PLC-5/40E Ethernet/IP controller engineered for high-performance industrial automation and process control.
It provides robust communication, advanced data handling, and reliable system integration within PLC-5 networks.
Designed for complex automation tasks, this processor supports large I/O counts, multiple communication interfaces, and seamless connectivity with remote I/O systems.
Technical Specifications
• Manufacturer: Allen-Bradley
• Product Line: PLC-5 Series
• Model Number: 1785-L40E
• Product Type: Programmable Logic Controller (PLC)
• Processor Type: PLC-5/40E
• Memory Capacity: 48 KWords
• Battery Type: 1770-XYC (for memory retention)
• EEPROM Backup Support: Yes (supports 1785-ME16, -ME32, -ME64, -M100)
• Embedded Communication Interfaces:
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4 DH+/Remote I/O channels (Adapter or Scanner)
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1 Serial Port (RS-232/RS-422A/RS-423 configurable)
• Maximum Total I/O: 2048 (any mix) or 2048 in + 2048 out (complementary)
• Maximum Analog I/O: 2048
• I/O Scan Time (per rack):
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10 ms at 57.6 kbit/s
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7 ms at 115.2 kbit/s
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3 ms at 230.4 kbit/s
• I/O Link Capacity: Up to 32 per link
• Expansion Capacity: Supports 61 local and 60 remote I/O chassis
• Memory Type: Battery-backed static RAM
• Protected Memory: Not supported
• Power Dissipation: 17.3 W
• Backplane Current Load: 3.3 A
• Power Supply Compatibility: 1771-P4S, -P6S, -P4S1, -P6S1
• Operating Temperature Range: 0°C to 60°C (32°F to 140°F)
• Non-Operating Temperature Range: -40°C to 85°C (-40°F to 185°F)
• Weight: 1.36 kg (3.00 lbs)
Features
• EtherNet/IP Connectivity: Provides fast and secure communication between controllers, I/O, and supervisory systems.
• Scalable Architecture: Supports up to 2048 I/O points with modular expansion.
• High Reliability: Industrial-grade design ensures stability under temperature variations and harsh conditions.
• Flexible Communication: Multiple serial and DH+/Remote I/O ports enhance system integration.
• Modular Power Supply Support: Compatible with various 1771 series power modules for flexible configuration.
• Efficient Memory Management: 48K word capacity for large-scale automation programs.
Applications
The Allen-Bradley 1785-L40E controller is widely used in:
• Manufacturing automation lines
• Process control in oil, gas, and chemical industries
• Power generation and energy systems
• Material handling and logistics
• Water and wastewater treatment facilities
FAQ
Q1: What type of processor is the 1785-L40E?
A1: It is a PLC-5/40E processor with Ethernet/IP capability.
Q2: What communication interfaces does it support?
A2: The module supports DH+/Remote I/O and serial communication (RS-232/422A/423).
Q3: How much user memory is available?
A3: The controller offers 48 KWords of memory.
Q4: Is EEPROM backup supported?
A4: Yes, via 1785-ME16, -ME32, -ME64, and -M100 memory modules.
Q5: What power supplies are compatible with this model?
A5: It is compatible with 1771-P4S, -P6S, -P4S1, and -P6S1 supplies.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Selecting the Right Cables for Industrial Automation: A Comprehensive Guide
Selecting the appropriate cabling infrastructure is critical for the success of any industrial automation project. Improper cable selection often leads to signal degradation, system instability, and costly downtime. As an automation engineer, I frequently see projects compromised by poor cabling choices in harsh industrial environments. This guide simplifies the complex landscape of cabling to help you make informed decisions for your PLC, DCS, and control systems.
Preventing Spurious Trips in Emergency Stop Systems: A Technical Guide
In industrial automation, the Emergency Stop (E-Stop) pushbutton is the ultimate safety line. However, relying on a single Normally-Closed (NC) contact can sometimes lead to unexpected spurious trips. As a control systems engineer, I have seen these nuisance trips halt entire production lines, causing significant downtime. Understanding why these components fail and how to implement robust architecture is essential for any reliable DCS or PLC-based safety system.
Sequencing Induction Motor Control with PLC Logic: Best Practices
In modern industrial automation, controlling a group of induction motors requires precision and safety. Uncontrolled simultaneous startup of multiple large motors often causes significant voltage dips, potentially triggering protective trips. Therefore, implementing a sequential startup and shutdown strategy is essential. This approach minimizes inrush current and ensures the system operates within established power constraints. A robust PLC program serves as the ideal engine for orchestrating these sequences.