OVERVIEW

Official designation: Allen-Bradley 20-750-S4 (PowerFlex 750, Integrated Safety Functions Option Module)

Role/Application: Integrated safety option module for PowerFlex 755 and 755T AC drives, providing networked Safe Stop 1 (SS1), Safely-Limited Speed (SLS), and Safely-Limited Position (SLP) over EtherNet/IP for certified functional safety.

KEY SPECS SUMMARY

Power: 11 to 30V DC input range

Interfaces / Ports: Plug-in drive option slot

Indicators: Refer to the latest manufacturer manual.

Operating Temp: 0 to 40 degrees C

Platform / Compatibility: PowerFlex 755/755T drives

Limit: SIL 3, Performance Level e (PLe)

Lifecycle: Active

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the primary safety standards met by the 20-750-S4 option module?

A: The module meets safety ratings up to and including SIL 3 and PLe category 4.

Wiring & Installation:

Q: Which power drive slots are compatible for installation of the 20-750-S4 module?

A: The module is typically installed in option slots 4, 5, or 6 of PowerFlex 755 drives.

Troubleshooting & Compatibility:

Q: Which required feedback module is necessary for safely limited position functions?

A: Safely-limited position requires the use of a universal feedback module such as the 20-750-UFB-1.

Replacement & Upgrades:

Q: What is the minimum required version of Studio 5000 Logix Designer for safety instructions?

A: Safety instructions for this module require Studio 5000 Logix Designer application version 31.00 or later.