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The
command sets the bandwidth of the current loop, in hertz. The drive current will be progressively
DIBW
less responsive to inputs or disturbances above this frequency. Fast, short moves may require higher
settings, while systems with mechanical resonance may require lower settings, or the use of filters (see
,
,
,
DNOTAF
DNOTAQ
DNOTBF
DNOTBQ
Low current loop bandwidth can limit the bandwidth and stiffness that can be attained in the velocity and
position loops. High bandwidths can emphasize resonance and system noise, add to heating of both motor
and drive, and increase acoustic noise produced by the motor.
NOTE: Attempting to set this value too low for the selected motor will result in a motor configuration
error. This will set
bit #7 and write error -32259 in the
TASX
Working with servo gains.
• Servo tuning process: refer to the Hardware Installation Guide.
• Check the values of all active gains (
• Creating and invoking gain sets: see
DIFOLD
Current Foldback Enable
Type
Drive Configuration
Syntax
<a_><!>DIFOLD<b>
Units
b = enable bit
Range
0 (disable) or 1 (enable)
Default
0
Response
DIFOLD:
*DIFOLD0
See Also
The
command enables (1) or disables (0) the drive's current foldback protection feature. The current
DIFOLD
foldback feature reduces the drive's continuous current output by 20% when sustained current has the
potential to overheat the drive.
Each drive has the following specifications. Note that current ratings are for the drive, not for the motor.
Drive Continuous Current Rating (100%) amps *
Drive Peak Current Rating** amps *
Maximum Time at Peak Current Rating seconds
* peak of the sinewave
** peak rating is 250% of continuous rating
If your drive is operating above its continuous rating, use the figure below to predict the number of seconds
until foldback will occur. For example, the figure shows that at the drive's peak current rating (250% of
continuous), foldback will occur after six seconds.
Peak Rating = 250 %
200 %
150 %
Continuous Rating = 100 %
72
Gemini GV6K/GT6K Command Reference
,
,
).
DNOTLD
DNOTLG
is one of many servo gains): use
DIBW
,
SGSET
SGENB
Units
GV6K-L3 GV6K-U3 GV6K-U6 GV6K-U12 GV6K-H20 GV6K-H40
3
7.5
6
Drive Current Rating vs. Time
50 %
0
1
10
100
Time (seconds)
www.comoso.com
configuration status register.
TCS
TGAIN.
,
,
.
TGAIN
TSGSET
3
6
12
7.5
15
30
6
6
6
10 4
3
10
Product
Rev
GT6K
n/a
GV6K
6.0
(applicable only to
servo axes)
20
40
50
100
6
6
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