Allen Bradley 1756-L73S GuardLogix 5573S Safety Controller

The AB 1756-L73S is a high-capacity GuardLogix 5573S safety controller designed for complex safety and standard automation requirements within the ControlLogix platform. Offering 8 MB of standard memory and 4 MB of dedicated safety memory, it enables integrated control of both safety-rated and non-safety-rated functions in a single platform, reducing system complexity and engineering effort.

With SIL 3 and Performance Level e certifications, the 1756-L73S is built to handle safety-critical tasks in automotive, oil & gas, heavy machinery, and packaging environments. This modular PAC is rack-mounted into a ControlLogix chassis and integrates seamlessly with Studio 5000 for high-performance logic execution and safety monitoring.

Technical Specifications

Model: 1756L73S
Series: GuardLogix 5573S
Controller Type: Integrated Safety + Standard PAC
Memory (Standard): 8 MB
Memory (Safety): 4 MB
Safety Category (EN 954-1): Cat. 4
Performance Level: PL e (EN ISO 13849-1)
SIL Rating: SIL 3 (IEC 61508)
Application: Large-scale motion control, safety logic, coordinated systems

Electrical & Processing Specifications

EtherNet/IP Support: Yes
Modbus Support: Yes
TCP/IP Support: No
SERCOS / DeviceNet / DH+ Support: No
USB Ports: 1
RS-232 Ports: 0
Embedded Display: Yes
Backplane Compatibility: ControlLogix standard chassis
Power Consumption: Supplied via ControlLogix rack PSU

Communication & Integration

Communication Interfaces:

• USB (for configuration and diagnostics)
• EtherNet/IP (via optional comm modules)
  Supported Software: Studio 5000 Logix Designer
  Safety Control Integration: Supports CIP Safety over EtherNet/IP (with appropriate comm module)

Mechanical Specifications

Width: 292 mm
Height: 240 mm
Depth: 164.52 mm
Mounting Type: Rack mount (ControlLogix chassis only)
Display: Integrated front panel display
Form Factor: Modular

Environmental Specifications

Operating Temperature: 0°C to 60°C
Storage Temperature: –40°C to +85°C
Humidity: 5% to 95% RH (non-condensing)
Installation Method: Rack-mounted only (no DIN or wall mounting)
IP Rating: IP20 (for use in control cabinets)

Compliance & Certifications

CE Marked: Yes
UL / cUL Listed: Yes
RoHS Compliant: Yes
Functional Safety Standards: IEC 61508, EN ISO 13849-1, EN 954-1

Key Features & Benefits

✅ 12 MB Combined Memory: 8 MB standard + 4 MB safety for large-scale projects

✅ SIL 3 / PL e Certified: Compliant with the highest safety standards in industrial automation

✅ Integrated Safety & Control: Reduces system complexity with dual-function controller

✅ Modular ControlLogix Platform: Scalable architecture for flexible system design

✅ USB Programming Port: Quick access for configuration and troubleshooting

📦 Order the Allen Bradley 1756-L73S from Drive Outlet Megastore

At Drive Outlet Megastore, we offer unbeatable Allen Bradley 1756-L73S prices. This GuardLogix controller is the foundation of advanced, safety-rated control systems—ideal for high-reliability and high-performance environments.

Check stock now or request a quote

Maximum safety. Maximum performance. One controller. — Drive Outlet Megastore