Rockwell Automation 21G PowerFlex 750-Series AC Drives Reference Manual - Manual (Page 61)

Rockwell Automation Publication 750-RM001F-EN-P - February 2012 61
Chapter
6
Safe Stop and Safe Stop with
Door Monitoring Modes
Introduction This chapter describes the Safe Stop modes of safety operation and provides a list
of configuration parameters as well as wiring examples for each Safe Stop mode.
Safe Stop Mode When properly configured for Safe Stop, the safety option monitors the Safe
Stop input (SS_In) and initiates the configured Safe Stop Type upon deactivation
of the input. The Safe Stop Type is configurable as either Safe Torque Off with or
without Standstill Checking, Safe Stop 1, or Safe Stop 2. The safety option
recognizes motion as stopped when encoder 1 feedback signals indicate the
system has reached the configured Standstill Speed. Once Standstill Speed has
been reached, the Door Control output (DC_Out) is set to Unlock.
In addition to setting the Standstill Speed, you configure both the Stop Delay
P47 [Max Stop Time], the period during which deceleration occurs after a Safe
Stop is initiated, and an optional Stop Monitoring Delay P46 [Stop Mon Delay],
which is a delay between the action that requests the Safe Stop and the initiation
of the configured Safe Stop Type. A P46 [Stop Mon Delay] can be configured
only for Safe Stop 1 or Safe Stop 2.
When properly configured for Safe Stop mode, the safety option also monitors
for faults and initiates the appropriate reaction. If the fault is a Safe State fault, the
safety option enters the Safe State. If the fault is a Stop Category fault, the safety
option initiates the configured Safe Stop Type.
Topic Page
Safe Stop Mode 61
Safe Stop Parameter List 69
Safe Stop Wiring Example 71
Safe Stop with Door Monitoring Mode 72
Safe Stop with Door Monitoring Parameter List 73
Safe Stop with Door Monitoring Wiring Example 74