Product Details
Overview
The Allen-Bradley 1756-L1 belongs to the ControlLogix Logix5550 family of programmable automation controllers (PACs). Designed for high-performance control, it offers robust communication capabilities and modular expandability suitable for industrial automation systems. With 64 KB of user memory, it provides efficient processing for discrete, analog, and motion control tasks in demanding applications.
Technical Specifications
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Manufacturer: Allen-Bradley
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Product Line: ControlLogix Logix5550 Series
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Model / Part Number: 1756-L1
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Product Type: Processor Module / Controller
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User Memory: 64 KB
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Communication Port: One (1) RS-232 serial port
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Compatible Memory Modules: 1756-M1, 1756-M2, 1756-M3
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Compatible Battery Backups: 1756-BA1, 1756-BA2
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Communication Cable: 1756-CP3
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Backplane Current Draw:
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5V DC: 120 mA
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24V DC: 2 mA
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Power Dissipation (Max): 4.1 W at 60°C
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Isolation Voltage: 30V DC continuous
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Operating Temperature: 0 to 60°C (32 to 140°F)
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Storage Temperature: -40 to 85°C (-40 to 185°F)
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Enclosure Type: Open-style module
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Slot Width: Single-slot (1)
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Mounting Type: Chassis-based
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Minimum Operating Current: 2 mA @ 10V DC
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Maximum Operating Current: 3.5 mA @ 30V DC
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Maximum Input Current (Off-State): 1.5 mA
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Weight: 0.63 lbs (0.28 kg)
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Removable Terminal Blocks: 1756-TBCH, 1756-TBS6H
Key Features
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64 KB onboard memory for control and logic processing
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RS-232 communication for HMI or programming interface
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Supports modular expansion with ControlLogix I/O chassis
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Battery backup for memory retention and system reliability
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Open-style chassis mounting for flexible configuration
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Wide temperature range suitable for industrial environments
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Low power consumption with efficient backplane communication
Application Scenarios
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Factory automation and process control
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Material handling and packaging systems
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Batch control and motion coordination
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OEM equipment requiring compact logic processing
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ControlLogix-based distributed automation systems
FAQs
Q: What memory modules are compatible with the 1756-L1 controller?
A: The 1756-L1 supports memory expansion using modules 1756-M1, 1756-M2, or 1756-M3.
Q: Which power supplies can be used with this module?
A: It is compatible with standard ControlLogix power supplies such as the 1756-PA and 1756-PB series.
Q: Does the 1756-L1 support redundancy?
A: No, the 1756-L1 does not include redundancy capability. For redundant systems, Allen-Bradley offers the 1756-RM redundancy module.
Q: What communication cable should be used for RS-232 programming?
A: Use 1756-CP3 cable for reliable serial communication between the module and programming terminal.
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
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.
Essential Motion Control Commands: A Practical Guide for Engineers
Automation engineers often rely on precise position and speed control to drive modern factory machinery. Modern industrial systems, such as Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS), depend heavily on standardized motion instructions. Mastering these commands ensures operational safety, protects mechanical components, and optimizes cycle times across production lines.
Mastering Modern Industrial Joystick Controls in Heavy Automation
Industrial joysticks play a pivotal role in human-machine interaction across heavy material handling and mobile hydraulics. These tactile controllers translate complex operator movements into precise electrical signals for PLCs, motion controllers, and DCS networks. Consequently, selecting and installing the right joystick architecture ensures operator safety, reduces fatigue, and optimizes equipment performance.