Rockwell Automation 20B PowerFlex 700 AC Drives Vector Control (v4.001 and up) - Manual (Page 126)

126 Rockwell Automation Publication 20B-UM002G-EN-P - July 2014
Appendix C Application Notes
The [Pos/Spd Prof Cmd] bits can be set via DPI interface (HIM or Comm) or
digital inputs. When digital input(s) are programmed for “Pos Sel 1-5,” the
starting step of the profile is exclusively controlled by the digital inputs. The DPI
interface value for bits 0-4 will be ignored.
If a digital input is configured for the bit 8-11 functions (see above), the DPI
interface or the digital input can activate the command.
Velocity Regulated Step Types and Parameters
Each of the Velocity Regulated steps has the following associated parameters or
functions. Refer to the following page for descriptions.
Time
When started, the drive will ramp to the desired velocity, hold the speed, and
then ramp to zero in the programmed time for the given step. Dwell time and
batch affect when the next step is executed.
Time Blend
When started, the drive will ramp to the desired velocity and hold speed for the
programmed time. At this point it will transition to the next step and ramp to the
programmed velocity without going to zero speed.
Digital Input
When started, the drive will ramp to the desired velocity and hold speed until the
digital input programmed in the value transitions in the direction defined. When
this occurs, the profile will transition to the next step after dwell and batch
settings are satisfied. It will then ramp to the programmed velocity without going
to zero speed.
Step Type Value Velocity Accel
Time Decel
Time Next Step
Condition Dwell Batch Next
Time Total Move
Time Speed &
Direction Accel
Rate Decel
Rate Time greater than
[Step Value] Dwell
Time Batch
Number Next
Step
Time Blend Total Time Speed &
Direction Accel
Rate Decel
Rate Time greater than
[Step Value] NA NA Next
Step
Digital Input Digital
Input
Number Speed &
Direction Accel
Rate Decel
Rate Digital Input logic Dwell
Time Batch
Number Next
Step
Encoder
Incremental
Blend Position &
Direction Speed Accel
Rate Decel
Rate At Position [Step
Value] NA NA Next
Step
Parameter
Level Parameter
Number
+/– Speed &
Direction Accel
Rate Decel
Rate [Step Value] > or
< [Step Dwell] Compare
Value NA Next
Step
End NA NA NA Decel
Rate At Zero transition Dwell
Time NA Stop
NA = Function not applicable to this step type