3-12 Programming and Parameters
PowerFlex 40 Adjustable Frequency AC Drive FRN 1.xx - 7.xx User Manual
Publication 22B-UM001I-EN-E
Basic Program Group (continued)
P038 [Speed Reference] Related Parameter(s): d001, d002, d012, d020, d021, P039, P040,
A051
-A054, A069, A070-A077, A110-A113, A123, A132, A140-A147, A150-A157
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 P038
[Speed Reference]. However, when A051 - A054 [Digital Inx Sel] is set
to option 2, 4, 5, 6, 11, 12, 13, 14, 15 and the digital input is active, or if A132
[PID Ref Sel] is not set
to option 0, the speed reference commanded by P038
[Speed Reference] will be overridden. Refer to
the flowchart on page 1-23
for more information on speed reference control priority.
Options 0 “Drive Pot” (Default) Frequency command from the potentiometer on the integral
keypad.
Important: This option is not available with IP66, NEMA/UL
Type 4X rated drives. Internal frequency command comes
from A069
[Internal Freq].
1 “InternalFreq”
(IP66, NEMA/UL Type
4X Default)
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 A070
- A077
[Preset Freq x] when A051
- A054 [Digital Inx Sel] are
programmed as “Preset Frequencies” and the digital inputs
are active.
5 “Comm Port” External frequency command from the communications port.
Refer to Appendix C for details.
6 “Stp Logic” External frequency command as defined by A070
- A077
[Preset Freq x] and A140
- A147 [Stp Logic x].
7 “Anlg In Mult” External frequency command as defined by the product of the
analog inputs (shown in d020
[Analog In 0-10V] and d021
[Analog In 4-20mA]).
[Analog In 0-10V] × [Analog In 4-20mA] = Speed Command
Example: 100% × 50% = 50%
P039 [Accel Time 1] Related Parameter(s): P038, P040, A051-A054,
A067
, A070-A077, A140-A147
Sets the rate of acceleration for all speed increases.
Values Default: 10.0 Secs
Min/Max: 0.0/600.0 Secs
Display: 0.1 Secs
Maximum Freq
Accel Time
Accel Rate
=
Speed
0
Time
P035 [Maximum Freq]
P039 or A067
[Accel Time x]
P040 or A068
[Decel Time x]
0
Acceleration
Deceleration
22B-UM001.book Page 12 Tuesday, May 30, 2017 5:22 PM
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