Rockwell Automation Allen-Bradley PowerFlex 700 B Series, User Manual

Page: 58 / 228

3-18 Programming and Parameters
SPEED COMMAND Spd Mode
& Li
mit
s
087 [Skip Freq Band]
Determines the bandwidth around a skip
frequency. [Skip Freq Band] is split,
applying 1/2 above and 1/2 below the
actual skip frequency. The same
bandwidth applies to all skip frequencies.
Default:
Min/Max:
Units:
0.0 Hz
0.0/30.0 Hz
0.1 Hz
084
085
086
088 [Speed/Torque Mod]
Selects the torque reference source.
“Zero Torque” (0) - torque command = 0.
“Speed Reg” (1) - drive operates as a
speed regulator.
“Torque Reg” (2) - an external torque
reference is used for the torque
command.
Default:
Options:
1
0
1
2
3
4
5
6
7
“Speed Reg”
“Zero Torque”
“Speed Reg”
“Torque Reg”
“Min Torq/Spd”
“Max Torq/Spd”
“Sum Torq/Spd”
“Absolute Min”
“Pos/Spd Prof”
053
“Min Torq/Spd” (3) - selects the smallest algebraic value to regulate to when the
torque reference and torque generated from the speed regulator are compared.
“Max Torq/Spd” (4) - selects the largest algebraic value when the torque reference
and the torque generated from the speed regulator are compared.
“Sum Torq/Spd” (5) - selects the sum of the torque reference and the torque
generated from the speed regulator.
“Absolute Min” (6) - selects the smallest absolute algebraic value to regulate to
when the torque reference and torque generated from the speed regulator are
compared.
“Pos/Spd Prof” (7) - drive operates as a speed or position regulator as determined
by the Profile Step parameters (720-877) and Setup parameters (705-719).
454 [Rev Speed Limit]
Sets a limit on speed in the negative
direction, when in FVC Vector mode.
Used in bipolar mode only. A value of
zero disables this parameter and uses
[Maximum Speed] for reverse speed limit.
Default:
Min/Max:
Units:
0.0 RPM
–[Max Speed]/0.0 Hz
–[Max Speed]/0.0 RPM
0.0 Hz
0.0 RPM
Fi
le
Gr
ou
p
No.
Parameter Name & Description
See page 3-2 for symbol descriptions
Values
Relate
d
FV
!
ATTENTION: The speed of the drive could reach [Maximum
Speed] + [Overspeed Limit] to meet required torque when any of
the torque modes have been selected. Equipment damage and/or
personal injury may result.
FV