Position indexer/speed profiler 67 digital inputs – Rockwell Automation 20A PowerFlex 70EC/700VC User Manual
Page 71
Position Indexer/Speed Profiler
67
Digital Inputs
Encoder Incremental Blend (EncIncrBlend) - When started, the drive will ramp to
the desired velocity and hold speed until the units of travel programmed is reached
(within tolerance window). The profile will then transition to the next step and the
drive will ramp to the speed of the new step without first going to zero speed.
The example below shows a five step profile. The first three are “EncIncrBlend”
steps followed an “Encoder Abs” step to zero then an “End” step. For each
“EncIncrBlend” step the drive ramps at [Step X AccelTime] to [Step X Velocity] in
the direction of the sign of [Step X Value]. The [Step X Value] is programmed to
the desired units of travel for the step. When the value programmed in [Step X
Value] is reached, the profile transitions to the next step. The absolute step is used
to send the profile back to the home position. This is done by programming [Step 4
Value] to zero.
Encoder Incremental Blend
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
1.00
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
En
c
o
d
e
r Sp
e
e
d
Units Traveled
Profile Status (Scaled)
Current Step
30
50
70
90
110
0
5
10
15
20
25
30
-50
-150
-250
-350
-450
50
150
250
350
10
Step 1
Step 2
Step 3
Time
Complete
Step 4
Step 5
[Encoder Speed], 415
[Units Traveled], 701
Current Step
[Profile Status], 700
E
n
co
d
er
S
p
eed
Units Traveled
Profile Status (Scaled)
Current Step