PowerFlex Digital DC Drive User Manual -
Publication 20P-UM001C-EN-P - July 2008
Programming and Parameters
3-27
SPEED
COMMAND
Sp
eed Regul
ator
388
[Flying Start En]
Enables/Disables the ability of the drive to connect to a spinning
motor at actual RPM when a start command is issued.
•
“Enabled” = When the drive is turned on, the speed of the motor is
measured and the ramp output is set accordingly. The drive then
runs at the set reference value.
•
“Disabled” = When the drive is turned on, the ramp starts from
zero.
Main uses:
•
To connect to a motor that is already spinning due to its load (e.g.
in the case of pumps, the flowing medium).
•
Re–connection to a spinning motor after a fault or alarm.
Note: If the Flying Start function is disabled, ensure that the motor is
not spinning when the drive is turned on, or harsh motor deceleration
in current limit may occur.
Default:
Options:
0 =
0 =
1 =
“Disabled”
“Disabled”
“Enabled”
444
[Spd Fdbk Filter]
Time constant used by the filter for the Speed Feedback circuit.
Filtering of the high frequency components of the speed feedback
signal is useful in the case of elastic coupling between the motor and
load (i.e., joints or belts).
Default:
Min/Max:
Units:
0
0 / 1000
ms
121,
122
445
[Spd Up Gain Pct]
The Speed Up function gain as a percentage of Par 446 [Speed Up
Base].
Default:
Min/Max:
Units:
0.00
0.00 / 100.00
%
446
[Speed Up Base]
The Speed Up function maximum gain. This value corresponds to
100% of Par 445 [Spd Up Gain Pct].
Default:
Min/Max:
Units:
1000.00
0.00 / 16000.00
ms
447
[Speed Up Filter]
The time constant of the filter for the D (derivative) component of the
Speed Up function.
Default:
Min/Max:
Units:
0
0 / 1000
ms
459
[SpdReg Kp Bypass]
The proportional gain (K
P
) of the speed regulator, expressed as a
percentage of Par 93 [Spd Reg Kp Base], when an encoder or
tachometer feedback signal is changed to armature feedback (Par
458 [SpdReg FB Bypass] = “Enabled”).
Default:
Min/Max:
Units:
10.00
0.00 / 100.00
%
458
460
[SpdReg Ki Bypass]
The integral gain (K
I
) of the speed regulator, expressed as a
percentage of Par 94 [Spd Reg Ki Base], when an encoder or
tachometer feedback signal is changed to armature feedback (Par
458 [SpdReg FB Bypass] = “Enabled”).
Default:
Min/Max:
Units:
1.00
0.00 / 100.00
%
458
493
[Arm Volt Kp]
Proportional gain (K
P
) of the field voltage regulator expressed as a
percentage of the value defined in Par 495 [Arm Volt Kp Base].
Default:
Min/Max:
Units:
30.00
0.00 / 100.00
%
495
494
[Arm Volt Ki]
Integral gain (K
I
) of the field voltage regulator expressed as a
percentage of the value defined in Par 496 [Arm Volt Ki Base].
Default:
Min/Max:
Units:
40.00
0.00 / 100.00
%
496
495
[Arm Volt Kp Base]
The proportional gain (K
P0
) of the field voltage regulator (base value).
Default:
Min/Max:
Units:
Based on drive current rating
0.10 / Based on drive current rating
A / V
493
496
[Arm Volt Ki Base]
The integral coefficient (K
I0
) of the field voltage regulator (base value).
Default:
Min/Max:
Units:
Based on drive current rating
0.01 / Based on drive current rating
A / V / ms
494
File
Gr
oup
No.
Parameter Name & Description
See
page 3-2
for symbol descriptions
Values
Related
A
A
A
A
A
A
A
A
A
