Rockwell Automation 21G PowerFlex 750-Series AC Drives Reference Manual - Manual (Page 136)

136 Rockwell Automation Publication 750-RM001F-EN-P - February 2012
Chapter 11 Configuration Examples
4. Set the P45 [Safe Stop Type] parameter value to 0 (default), which equals
Safe Torque Off with Standstill Speed Checking (Torque Off ).
Safe Torque Off with Standstill Speed Checking (Torque Off ) switches off
motion power immediately after an E-Stop command and sets door
control to Unlock when the Standstill Speed is detected.
5. Choose the P47 [Max Stop Time] parameter.
The default value is 10 s, but you can enter a value from 0…6553.5 s.
6. Type the value of the expected coast-to-stop time plus a reasonable
tolerance after the Safe Stop command is initiated.
If the machine’s speed is not below the Standstill Speed within the Stop
Delay [Max Stop Time] period you entered, a Stop Speed Fault occurs and
door control remains set to Lock until the Standstill Speed is reached.
7. Choose the P48 [Standstill Speed] parameter.
The default value is 0.001 rpm, but you can enter a value from
0.001…65,535 rpm. The Standstill Speed is measured in revolutions per
minute, because the P29 [Fbk 1 Units] parameter is configured for Rotary
feedback.
8. Enter a value in the P48 [Standstill Speed] parameter field to define the
speed at which motion is stopped with no relative position change before
the safety option determines standstill has been reached.
9. Choose the P49 [Standstill Pos] parameter.
The default value is 360 degrees, but you can enter a value from 0…65,535
degrees. The Standstill Position is measured in degrees because the P29
[Fbk 1 Units] parameter is configured for Rotary feedback.
10. Enter the value to define the position limit in encoder units that is
tolerated after standstill has been reached.
11. Go to the next section to set the parameters found in the Limited Speed
parameters group.