Technical Parameters of Allen-Bradley 1756-L71S
Model: 1756-L71S
Series: GuardLogix 5570
Product Type: Safety PAC
Standard User Memory: 2 MB
Safety Memory: 1 MB
I/O Memory: 0.98 MB
Programming Port: USB
Nonvolatile Storage: SD Card
Max. Digital I/O: 128,000 (system dependent)
Max. Analog I/O: 4,000 (system dependent)
Motion Axes: Up to 100 axes (system dependent)
Why Choose Allen-Bradley 1756-L71S?
Allen‑Bradley 1756-L71S is a Rockwell GuardLogix 5570 safety controller. It runs both regular equipment logic and safety protection programs. Equipped with 2MB standard user memory plus 1MB dedicated safety memory, it executes control programs according to project requirements.
Unlike standard ControlLogix controllers, this model comes with functional safety capability. Pair it with compatible safety I/O modules to build a control system that meets safety compliance requirements.
Key Differences Between 1756-L71S and 1756-L71
Many customers mix up these two models. Here are the main differences:
1.Type: 1756-L71 is a standard PLC; 1756-L71S is a GuardLogix safety controller
2.Safety function: 1756-L71 has no safety certification; 1756-L71S comes with SIL 2 / PL d safety capability
3.Memory: 1756-L71 only has 2MB standard memory; 1756-L71S has 2MB standard memory + 1MB dedicated safety memory
4.Application: 1756-L71 for general automation control; 1756-L71S for machines and production lines requiring safety compliance
Appearance & Design
The Allen-Bradley 1756-L71S is a rack-mount controller. It fits into ControlLogix racks and works with safety partner controllers and other system modules. Its modular design allows neat installation inside control cabinets and simplifies routine inspection and maintenance for engineers.
Quantity available: In stock.
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Warranty: 12 months.
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Lead time: Shipment within 3-5 working days.
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Terms of payment: T/T. RMB (CNY) support.
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Courier partners: FedEx, DHL, UPS, TNT, EMS, SF express.
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FAQ
Q1: What is the Allen-Bradley 1756-L71S?
A1: The 1756-L71S is a GuardLogix 5570 safety controller. It handles both standard control and safety-related tasks, and works with matching safety partner and system components.
Q2: What is the memory capacity of the 1756-L71S?
A2: This model comes with 2 MB standard user memory, 1 MB safety memory and 0.98 MB I/O memory.
Q3: Which safety partner is required for 1756-L71S?
A3: Its matching safety partner controller is 1756-L7SP. The safety partner must be installed in the slot right next to the main controller, and both controllers need identical major and minor firmware versions.
Q4: How can I place an order or apply for bulk purchase discounts?
A4: Send your required order quantity via email to Irene8866@163.com, or leave us a message on WhatsApp (+86 18950163907). We will reply within 24 hours with formal quotation and stock confirmation.
For more product information, please contact our professional sales team to obtain the latest pricing and stock information for the Allen-Bradley 1756-L71S!
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