Allen Bradley 1756-L71S GuardLogix Controller

The AB 1756-L71S is a high-performance GuardLogix programmable automation controller (PAC) offering integrated standard and safety control in a single platform. Equipped with 2 MB standard memory and 1 MB safety memory, this controller supports SIL 3 and Performance Level e (PL e), making it ideal for applications requiring functional safety and reliable motion, process, and discrete control.

Engineered for use with the ControlLogix modular system, the 1756-L71S enables seamless configuration and diagnostics through Studio 5000 and supports EtherNet/IP safety messaging for distributed applications. With its dedicated safety partner module, it ensures deterministic safety control while maintaining system flexibility.

Technical Specifications

Model: 1756L71S
Series: ControlLogix / GuardLogix
Controller Type: Integrated Standard + Safety
Standard Memory: 2 MB
Safety Memory: 1 MB
Mounting Type: Chassis-based (ControlLogix rack)
Display: Integrated

Electrical & Communication Interfaces

USB Programming Port: 1
EtherNet/IP Support: Yes
MODBUS Support: Yes
Other Networks Supported: TCP/IP, SERCOS – No
RS-232 / Serial Ports: None
Voltage Type: DC (from chassis backplane)

Mechanical Specifications

Width: 292 mm
Height: 240 mm
Depth: 164.52 mm
Model Format: Modular
Mounting Options: Rack mounting only (no wall or rail mounting)

Environmental Specifications

IP Rating: IP20
Operating Temperature: 0°C to +60°C
Humidity: 5–95% non-condensing
Shock Resistance: IEC 60068-2-27 compliant
Vibration Resistance: IEC 60068-2-6 compliant

Functional Safety & Compliance

Category according to EN 954-1: Cat. 4
Performance Level (PL): e – EN ISO 13849-1
Safety Integrity Level (SIL): SIL 3 – IEC 61508
Functional Safety Features:

• Integrated safety task with separate execution
• Safety partner module support
• Certified for safety-related applications
  Certifications:
  CE
  cULus
  TÜV Functional Safety
  RoHS
  ATEX (via system compatibility)

Key Features & Benefits

✅ Dual Memory Design: 2 MB for standard logic and 1 MB for safety functions

✅ SIL 3 / PL e Functional Safety: Ideal for high-risk safety applications

✅ Studio 5000 Integration: Unified environment for standard and safety programming

✅ Modular ControlLogix Format: Easily scales within large automation systems

✅ High Availability & Diagnostics: Advanced controller redundancy options and safety status monitoring

✅ EtherNet/IP Ready: Native support for safety I/O over EtherNet/IP networks

📦 Order the Allen Bradley 1756-L71S Today

At Drive Outlet Megastore we offer unbeatable Allen Bradley 1756-L71S prices. Get next-generation safety and standard control performance in one chassis—ideal for machinery, robotics, process, and motion applications.

Check stock now or request a quote – with fast UK delivery and exceptional technical support.