Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual - Manual (Page 169)

Speed Reference
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013 169
Using the above formula, calculate the Speed Reference sent from a network
using a DPI adapter.
For example, to send out a command frequency of 60 Hz with [Maximum Freq]
= 70 Hz, we would calculate the following:
Jog
When the drive is not running, pressing the HIM Jog button or a programmed
Jog digital input will cause the drive to jog at a separately programmed jog
reference. This speed reference value is entered in [ Jog Speed], parameter 100.
Figure 35 Speed Reference Selection
Scaling
Scaling applies only to references from analog inputs and reference sources
selected in [Speed Ref x Sel], parameters 90/93.
Each analog input has its own set of scale parameters:
•
[Analog In x Hi] sets the maximum level on input to be seen (i.e. 10 Volts).
•
[Analog In x Lo] sets the minimum level on input to be seen (i.e. 0 Volts).
Each [Speed Ref x Sel] parameter has an additional set of scale parameters:
•
[Speed Ref x Hi] selects the reference value for the maximum input specified
in [Analog In x Hi].
•
[Speed Ref x Lo] selects the reference value for the minimum input specified
in [Analog In x Lo].
SpeedRef =
60 Hz
70 Hz
x 32767 = 28086
= Default
Speed Ref B Sel, Parameter 093
Preset Speed 2, Parameter 102
Preset Speed 3, Parameter 103
Preset Speed 4, Parameter 104
Preset Speed 5, Parameter 105
Preset Speed 6, Parameter 106
Preset Speed 7, Parameter 107
TB Man Ref Sel, Parameter 096 Digital Input
DPI Port Ref 1-6, See Parameter 209 DPI Command
Jog Speed, Parameter 100 Jog Command
HIM Requesting Auto/Manual
Trim
[Digital Inx Select]:
Speed Sel 3 2 1
0 0 1
0 1 1
0 1 0
1 0 0
1 0 1
1 1 0
1 1 1
Auto
Man
Drive Ref Rslt
Commanded
Frequency
Min/Max Speed
Acc/Dec Ramp
and
S Curve
Pure Reference
Post Ramp
to follower drive for
Frequency Reference
to follower drive for
Frequency Reference
Auto Speed Ref Options
Manual Speed Ref Options
Slip Compensation 1 "Slip Comp"
None 0 "Open Loop"
PI Output 2 "Process Pi"
Speed Adders [Speed Mode]:
PI Exclusive Mode
[PI Configuration]:
Bit 0, Excl Mode = 0
Output Frequency
Mod Functions
(Skip, Clamp,
Direction, etc.)
Speed Ref A Sel, Parameter 090 0 0 0