User Manual - Series B Instruction Manual
Table Of Contents
- Front Cover/Table of Contents
- General Description
- What Is the DriveGuard Safe Torque Off Option?
- Certifications and Compliance
- CE Certification
- Certified Equipment
- Important Safety Considerations
- Safe State
- Safety Category 3 / PL (d) Performance Definition
- Stop Category Definitions
- Performance Level and Safety Integrity Level (SIL) CL2
- PFD and PFH Definitions
- PFD and PFH Data
- Functional Proof Tests
- Contact Information if Safety Option Failure Occurs
- Installation and Wiring
- Pre-Installation Instructions
- EMC Considerations
- DriveGuard Safe Torque Off Option Installation
- Wiring
- Verify Operation
- Description of Operation
- PowerFlex 40P Safe Torque Off Operation
- PowerFlex 70 Safe Torque Off Operation
- Connection Examples
- Back Cover

Rockwell Automation Publication PFLEX-UM003B-EN-P - July 2012 5
General Description
Certified Equipment
Certifications Online
See the Product Certifications link at http://ab.com for Declarations of
Conformity, Certificates, and other certifications details.
Important Safety Considerations
The system user is responsible for:
• the set-up, safety rating, and validation of any sensors or actuators
connected to the system.
• completing a system-level risk assessment and reassessing the system any
time a change is made.
• certification of the system to the desired safety performance level.
• project management and proof testing.
• programming the application software and the safety option
configurations in accordance with the information in this manual.
• access control to the system, including password handling.
• analyzing all configuration settings and choosing the proper setting to
achieve the required safety rating.
Drive Rating TUV Certified DriveGuard Safe Torque Off
Function
PowerFlex 40P 240V ✔ Series B or greater
480V ✔ Series B or greater
PowerFlex 70 Enhanced
Control
240V ✔ Series A or greater
400V ✔ Series A or greater
480V ✔ Series A or greater
ATTENTION: Hazard of injury exists due to electric shock. Only install a Series B or
greater DriveGuard Safe Torque Off option in a PowerFlex 40P Drive.
IMPORTANT
When applying Functional Safety, restrict access to qualified, authorized personnel
who are trained and experienced.
ATTENTION: When designing your system, consider how personnel will exit the
machine if the door locks while they are in the machine. Additional safeguarding
devices may be required for your specific application.
PFLEX-UM003.fm Page 5 Wednesday, July 18, 2012 8:26 AM