Rockwell Automation 21G PowerFlex 750-Series AC Drives Reference Manual - Manual (Page 75)

Rockwell Automation Publication 750-RM001F-EN-P - February 2012 75
Chapter
7
Safe Limited Speed (SLS) Modes
Introduction This chapter describes the Safe Limited Speed (SLS) modes of safety operation
and provides a list of configuration parameters along with wiring examples for
each mode.
Safe Limited Speed (SLS)
Mode When properly configured for Safe Limited Speed, the safety option performs
Safe Limited Speed (SLS) monitoring functions in addition to the Safe Stop
function described in
Safe Stop Mode on page 61 . When the Safe Limited Speed
input (SLS_In) is OFF, feedback velocity is monitored and compared against a
configurable Safe Speed Limit.
If the feedback velocity is below the Safe Speed Limit during Safe Limited Speed
monitoring, the Door Control output (DC_Out) is unlocked after the P53
[LimSpd Mon Delay], if configured, has expired.
Topic Page
Safe Limited Speed (SLS) Mode 75
Safe Limited Speed Parameter List 78
Safe Limited Speed Wiring Example 80
Safe Limited Speed with Door Monitoring Mode 81
SLS with Door Monitoring Parameter List 82
SLS with Door Monitoring Wiring Example 83
Safe Limited Speed with Enabling Switch Monitoring Mode 83
SLS with Enabling Switch Monitoring Parameter List 84
SLS with Enabling Switch Monitoring Wiring Example 85
Safe Limited Speed with Door Monitoring and Enabling Switch Monitoring Mode 86
SLS with Door Monitoring and Enabling Switch Monitoring Parameter List 89
SLS with Door Monitoring and Enabling Switch Monitoring Wiring Example 90
Safe Limited Speed Status Only Mode 91
SLS Status Only Parameter List 93
SLS Status Only Wiring Examples 94
ATTENTION: Make sure that an unlocked door does not result in a hazardous
situation.
If a Safe Stop Type is initiated or a fault occurs while the safety option is actively
monitoring Safe Limited Speed, door control remains unlocked. The safe state of
the SLS_In input may allow the door be unlocked.