Figure 14 - digital input example – Rockwell Automation 20B PowerFlex 700 AC Drives Vector Control (v4.001 and up) User Manual
Page 131
Rockwell Automation Publication 20B-UM002G-EN-P - July 2014
131
Application Notes
Appendix C
Example 2: Six Step Velocity Profile (Digital Input-Based)
In each step, the drive ramps at [Step x AccelTime] to [Step x Velocity] in the
direction of the sign of [Step x Velocity] until a digital input is detected. When
the input is detected it transitions to the next step in the profile. This continues
through Digital Input #6 activating step 5. Step 5 is defined as a “Parameter
Level” step. Digital Inputs used in the profile must be defined as “Prof Input.”
Figure 14 - Digital Input Example
IMPORTANT
A transition is required to start each step. If the input is already true when
transitioning to a digital input step, the indexer will not go to the next step.
Step #
[Step x Type]
[Step x
Velocity]
[Step x
AccelTime]
[Step x
DecelTime]
[Step x
Value]
[Step x
Dwell]
[Step x
Batch]
[Step x
Next]
1
Digital Input
300
0.5
0.5
3.00
0.00
1
2
2
Digital Input
50
0.5
0.5
4.00
5.00
1
3
3
Digital Input
-300
0.5
0.5
5.00
0.00
1
4
4
Digital Input
-100
0.5
0.5
6.00
0.00
1
5
5
Param Level
-50
0.5
0.5
701
0.00
1
6
6
End
N/A
N/A
0.5
N/A
0.00
N/A
N/A
0
5
10
15
20
25
30
35
40
45
50
-350
-50
-150
-250
0
50
150
250
350
30
50
70
90
110
130
150
170
Step 1
Digital Input #4
Step 2
Step 3
Time
Step 4
Step 5
Note: Step 5 is a Parameter Level Step.
Step 6
Digital Input #6
5s
Dwell
[Encoder Speed], 415
[Units Traveled], 701
Current Step
Dig In Status, 216
[Profile Status], 700
Digital Input #3
Digital Input #5
10
Encoder Speed
Units Traveled
Profile Status (Scaled)
Current Step