86
Gemini GV6K/GT6K Command Reference
not overwritten), the status warning bit #28 in
TASX
will be set, and the maximum internal value will be
used. This warning is cleared with the
RESET
or
DRESET
command or by cycling power to the drive.
The motor’s torque/force constant (Kt) is derived from the motor’s voltage constant (Ke, which is set by
the
DMTKE
command) by the following relationship (note:
Ke
is set with the
DMTKE
command
):
Rotary motors
:
peak value
*
*
*
)
/
(
*
200
3
3
)
/
(
krpm
Volts
Ke
A
Nm
Kt
π
=
Linear motors
:
peak value
*
*
*
sec))
/
/(
(
*
200
3
3
)
/
(
meter
Volts
Ke
A
N
Kt
π
=
NOTE
: The
Gem6K requires values in rotary units. Motion Planner does these conversions for you when you use the
Setup Wizard. If you do not use the Setup Wizard, you must convert your linear units to rotary units. See
the
DMEPIT
command for information on conversion.
Working with servo gains
.
•
Servo tuning process: refer to the
Hardware Installation Guide
.
•
Check the values of all active gains (
DMTLIM
is one of many servo gains): use
TGAIN
.
•
Creating and invoking gain sets: see
SGSET
,
SGENB
,
TGAIN
,
TSGSET
.
DMTLMN
Minimum Motor Inductance
Type
Motor
Syntax
<a_><!>DMTLMN<r>
(does not take effect until RESET, DRESET or
cycle power)
Units
r = mH (measured line-to-line)
Range
0.1 to 200.0 (motor dependent) : ±0.1
Default
0.0 (DMTLMN of 0 results in motor config. error)
Response
DMTLMN:
*DMTLMN10.0
See Also
DMTLMX, DMTR, TASX, TCS
Product Rev
GT6K n/a
GV6K 6.0
(applicable only to
servo axes)
NOTE
: This command does not take effect until you cycle power to the drive, or issue a
RESET
or
DRESET
command.
AUTO-SETUP
:
This command is automatically set according to the Parker motor selected with the
configuration utility in Motion Planner (see page
6
). If you did not use the configuration utility or are not using a
Parker Motor, this command is set to zero and you will have to manually set this parameter. (Refer to
DMTR
for a list of auto-configured commands.) If the drive is powered up when this command is set to zero (for
instance, if
RFS
is executed), the drive reports a motor configuration error with
TASX
bit 7, writes a value of
-32715 to the
TCS
register, and shuts down the drive (
DRIVE0
).
The
DMTLMN
command specifies the minimum value of motor inductance. This will usually differ from the
nominal nameplate value because actual inductance is usually position dependent.
If
DMTLMN
value is less than the “Lmin” value (see table below), the drive will fault (motor configuration
error is reported in
TASX
bit #7).
Units
GV6K-L3 GV6K-U3 GV6K-U6 GV6K-U12 GV6K-H20 GV6K-H40
Lmin (min. phase-phase inductance)
mH
0.5
5.0
5.0
5.0
5.0
5.0
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