Allen-Bradley PowerFlex 527, User Manual

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Rockwell Automation Publication 520-UM002B-EN-E - December 2017 103
Chapter
6
Network Control of Safe Torque-Off
This chapter describes network control of the safe torque-off function. This
example uses a 1756-L7xS GuardLogix® safety controller to issue the safe torque-
off (STO) command over the EtherNet/IP network and the PowerFlex® 527
drive executes the STO command.
Compatible Safety Controllers
The Studio 5000 Logix Designer® application:
• version 24.00 or later, provides support for programming, commissioning,
and maintaining the 1756-L7xS GuardLogix safety controller.
• version 28.00 or later, provides support for programming, commissioning,
and maintaining the Compact GuardLogix 5370 safety controller.
A 1756-L7xS GuardLogix or Compact GuardLogix 5370 safety controller is
required for network control of the PowerFlex 527 safe torque-off function.
The PowerFlex 527 safety connection can originate from a safety controller that
provides both safety and motion control.
The PowerFlex 527 safety connection can originate from a safety controller that
controls only the safety, while a separate Logix processor controls motion.
Selection of Network Safe Torque-Off
To select network control of safe torque-off:
1. The PowerFlex 527 drive must be added to a 1756-EN2T, 1756-EN2TR,
1756-EN2F, 1756-EN3T, or 1756-EN3TR EtherNet/IP bridge in a 1756-
L7xS GuardLogix controller's I/O tree.
2. The 1756-EN2T, 1756-EN2TR, 1756-EN2F, 1756-EN3T, or 1756-
EN3TR EtherNet/IP bridge must be configured for “Safety Only” or
“Motion and Safety”.
For information on... See page...
Understanding Integrated Safety Drive Replacement 107
Replacing an Integrated Safety Drive in a GuardLogix System 107
Motion Direct Commands in Motion Control Systems 114
Functional Safety Considerations 120