P038, When, Basic program group – Rockwell Automation 22D PowerFlex 40P User Manual, FRN 3 User Manual
Page 58: Continued), P038 [speed reference

3-12
Programming and Parameters
Basic Program Group
(continued)
P038 [Speed Reference]
Related Parameter(s):
,
,
A069
,
-
,
-
Sets the source of the speed reference to the drive.
The drive speed command can be obtained from a number of different sources. The source is
normally determined by
[Speed Reference]. However, when
-
[Digital Inx Sel] is set
to option 2, 4, 5, 6, 11, 12, 13, 14, 15 and the digital input is active, or if
[PID Ref Sel] is not set
to option 0, the speed reference commanded by
[Speed Reference] will be overridden. Refer to
the flowchart on
for more information on speed reference control priority.
Options
1 “InternalFreq”
Internal frequency command from
A069
[Internal Freq]. Must
be set when using MOP function.
2 “0-10V Input”
External frequency command from the 0-10V or ±10V analog
input or remote potentiometer.
3 “4-20mA Input”
External frequency command from the 4-20mA analog input.
4 “Preset Freq”
External frequency command as defined by
-
[Preset Freq x] when
[Digital Inx Sel] are
programmed as “Preset Frequencies” and the digital inputs
are active.
5 “Comm Port” (Default)
External frequency command from the communications port.
Refer to Appendix C for details.
6 “Stp Logic”
External frequency command as defined by
-
[Preset Freq x] and
[Stp Logic x]. If Step
Logic-based positioning control is desired, select option 9
“Positioning” and adjust
E222
[Positioning Mode].
7 “Anlg In Mult”
External frequency command as defined by the product of the
analog inputs (shown in
[Analog In 4-20mA]).
[Analog In 0-10V]
×
[Analog In 4-20mA] = Speed Command
Example: 100%
×
50% = 50%
8 “Encoder”
External frequency command directly from encoder or pulse
train input. Use
[Motor Fdbk Type] to select encoder
type.
9 “Positioning”
External position as defined by
E222
and
E230
-
. Refer
to
for detailed information on positioning.