Allen-Bradley PowerFlex400, User Manual

Page: 62 / 192

3-10 Programming and Parameters
Basic Program Group
(continued)
P038 [Speed Reference]
Related Parameter(s): b001 , b002 , P038 , P040 , P042 , T051 - T054 ,
T070 , T071 , T073 , T074 , T075 , C102 , A141 , A142 , A143 - A146 , A152 , d301
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 T051 - T054 [Digital Inx Sel] is set
to option 1, 2, 3, 4, 5, 8, 14, 15, 16, 17 and the digital input is active, or if A152 [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 1-24 for more information on speed reference control priority.
Options 0 “Drive Keypad” Internal frequency command from the digital speed keys on
the integral keypad.
1 “InternalFreq” Internal frequency command from A142 [Internal Freq]. Must
be set when using MOP function.
2 “Analog In 1” (Default) External frequency command from an analog source as
determined by
T069 [Analog In 1 Sel] and DIP Switch AI1 on
the control board. Default Dip Switch setting is 10V.
3 “Analog In 2” External frequency command from an analog source as
determined by
T073 [Analog In 2 Sel] and DIP Switch AI2 on
the control board. Default Dip Switch setting is 10V.
4 “Preset Freq” External frequency command as defined by A143 - A146
[Preset Freq x] when T051 - T054 [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 D and Appendix E for details. Parameter
C102 [Comm Format] is used to select a communications
protocol.
P039 [Accel Time 1]
Related Parameter(s): P038 , P040 , T051 - T054 , A141
,
A143 - A146 , A147
Sets the rate of acceleration for all speed increases.
Values Default: 20.00 Secs
Min/Max: 0.00/600.00 Secs
Display: 0.01 Secs
Maximum Freq
Accel Time
Accel Rate
=
Speed
0
Time
P035 [Maximum Freq]
P039 or A147
[Accel Time x]
P040 or A148
[Decel Time x]
0
Acceleratio
n
Deceleration