Product Details
Product Description
The Allen Bradley 1756-L73S GuardLogix controller is a dual-slot safety automation processor designed for high-performance control and integrated safety applications. With 8 MB of standard user memory and 4 MB of dedicated safety memory, it supports large-scale systems requiring advanced safety functionality. The controller includes nonvolatile memory options, high I/O capacity, and robust electrical characteristics, making it suitable for complex industrial automation environments.
Technical Specifications
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Manufacturer Allen Bradley
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Product Line GuardLogix 1756 Series
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Product Type Safety Automation Controller
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Part Number 1756-L73S
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User Memory 8 MB
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Safety Memory 4 MB
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I/O Memory 0.98 MB
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Nonvolatile Memory Options
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1 GB (1756-SD1 standard with controller)
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2 GB (1756-SD2 optional)
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Digital I/O Capacity Up to 128,000 points
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Analog I/O Capacity Up to 4,000 points
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Total I/O Capacity 128,000 points
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Current Draw
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5 mA @ 1.2 V DC
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800 mA @ 5.1 V DC
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Power Dissipation 2.5 W
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Thermal Dissipation 8.5 BTU/hr
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Isolation Voltage 30 V continuous (USB port-to-system), type tested at 980 V AC for 60 s
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Slot Width 2 slots (controller requires both)
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Weight 0.25 kg
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Shipping Weight 1.5 kg
Application Scenarios
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Large-scale safety-critical automation systems
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Machine control requiring integrated safety and high I/O density
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Distributed control systems with advanced memory and redundancy needs
FAQ
Q: What is the difference between user memory and safety memory? A: User memory (8 MB) is for standard control tasks, while safety memory (4 MB) is dedicated to safety-related functions.
Q: Does the controller include nonvolatile memory? A: Yes, a 1 GB SD card (1756-SD1) is included, with an optional 2 GB card (1756-SD2).
Q: How many I/O points can the 1756-L73S support? A: Up to 128,000 digital I/O points and 4,000 analog I/O points.
Comparable Models
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1756-L73S: GuardLogix safety controller with 8 MB user memory and 4 MB safety memory (this model)
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1756-L72S: GuardLogix controller with smaller memory capacity
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1756-L74S: GuardLogix controller with larger memory for more complex systems
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
Redundant Automation Systems: Core Architecture, Business Value, and Technical Advantages
Unplanned downtime poses a major financial threat to process manufacturing. To prevent costly interruptions, engineers deploy redundant PLC and DCS architectures that ensure continuous operation when hardware fails. This technical guide explores redundancy principles, critical system nodes, and real-world scenarios.
Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.