Overview
The Allen-Bradley 1756-L62S is a GuardLogix safety-integrated processor module engineered for ControlLogix applications requiring certified safety control alongside standard automation logic. Designed as a primary controller in the Logix 5562S family, this module operates within the 1756 chassis architecture and supports simultaneous standard and safety programming with SIL 3 CL integrity certification.
Key Features
- Integrated safety and standard control—SIL 3 CL certified safety partition with locked safety memory protection
- 4MB standard user memory + 1MB dedicated safety memory for flexible program allocation
- Dual-network capability: EtherNet/IP, ControlNet, and DeviceNet communications
- Online editing and forcing enabled on standard logic side; safety logic locked and protected when safety memory is sealed
- SERCOS drive support (Kinetix 2000, 6000, 7000; Ultra 3000) for motion applications
- Chassis-based mounting in 1756 ControlLogix enclosures
Technical Specifications
- User Memory: 4 MB standard + 1 MB safety partition
- I/O Memory: 478 KB I/O buffer
- Maximum I/O: 128,000 digital; 4,000 analog
- Power Dissipation: 3.5 watts
- Current Draw (5.1V DC): 1,200 mA
- Current Draw (24V DC): 14 mA
- Isolation Voltage: 30V continuous
- Operating Temperature: 0–60°C (32–140°F)
- Weight: 1.12 lb
- Mounting: 1756 chassis slot
- Certifications: UL, CSA, CUL, CE, GOST, KC, C-TICK, Marine, NRTL
- Thermal Dissipation: 11.9 BTU/hr
Typical Applications
- Safety-critical packaging and material handling systems
- Machine guarding and emergency stop logic integration
- Process control with certified safety interlocks
- Motion control applications requiring SIL 3 certification
- Redundancy and hot-standby configurations with safety partners (1756-LSP)
Compatibility & Replacements
Compatible With
- 1756 ControlLogix chassis enclosures
- 1756 I/O modules (analog, digital, specialty)
- Network modules: 1756-EN2x (EtherNet/IP), 1756-ENBT (EtherNet/IP), 1756-CN2 (ControlNet), 1756-CNB (ControlNet), 1756-DNB (DeviceNet)
- Kinetix 2000, 6000, 7000 and Ultra 3000 servo drives (SERCOS)
- Studio 5000 Logix Designer programming software
- CompactLogix and DriveLogix controllers for distributed architectures
Replaces / Drop-In Replacement For
- Previous GuardLogix safety controllers in retrofit and upgrade scenarios
- Serves as primary processor in 1756-L61S / 1756-L63S family compatibility chains
- Verify specific model compatibility with engineering team before replacement
Works With
- Software: Studio 5000 Logix Designer, Studio 5000 Safety Design Environment
- Protocols: EtherNet/IP, ControlNet, DeviceNet
- Motion Standards: IEC 61491 (international motion control standard), SERCOS
- Safety Standards: SIL 3 CL (Certification Level) per IEC 62061
