Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 93)

Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013 93
Detail Drive Configuration and Operation Chapter 1
Parameter 780 [PositDetct1 Stpt] is used to set the position set point for which
to watch.
Setting parameter 740 [Position Control] bit 17 “X Watch 1 Dir” = 1 causes the
drive to detect when the position feedback becomes greater than the set point.
Setting [Position Control] bit 17 “X Watch 1 Dir” = 0 causes the drive to detect
when the position feedback becomes less than the set point.
Setting parameter 740 [Position Control] bit 16 “X Watch 1 En” = 1 enables the
position detection function to detect the next position. Setting [Position
Control] bit 16 “X Watch 1 En” = 0 resets position detection.
Setting parameter 741 [Position Status] bit 8 “Posit Watch1” = 1 indicates that
the position set point has been passed.
Example:
• Set parameter 147 [FW Functions En] bit 22 “PosWtch/Dtct” = 1.
• Link parameter 784 [Posit Detct1 In] to parameter 240 [Encdr1 Position].
• Set parameter 780 [PositDetct1 Stpt] = 100000 counts.
• Set parameter 740 [Position Control] bit 17 “X Watch 1 Dir” = 1.
• Set parameter 740 [Position Control] bit 16 “X Watch 1 En” = 1.
When parameter 240 [Encdr1 Position] becomes greater than 100000 counts,
parameter 741 [Position Status] bit 8 “Posit Watch1” is set to 1. Note that the
position must pass 100000 counts. If the motor position is already past 100000
counts when the position watch is enabled, the position watch status bit will not
detect the position until 100000 counts is passed again.
Set parameter 740 [Position Control] bit 16 “X Watch 1 En” = 0 to reset
parameter 741 [Position Status] bit 8 “Posit Watch1” to 0.