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DMTTCM
Motor Thermal Time Constant
Type
Motor
Syntax
<a_><!>DMTTCM<r>
cycle power)
Units
r = minutes
Range
0.0 to 300.0 : ±0.1
Default
0.0
Response
DMTTCM:
*DMTTCM30.4
See Also
DMTR, DMTTCW
NOTE: This command does not take effect until you cycle power to the drive, or issue a
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.)
The
command specifies the thermal time constant of the motor and its mounting. This value is
DMTTCM
used to help protect the motor from thermal damage. It describes the length of time the motor takes to reach
63% of it's final temperature, given constant power. Note that motor mounting will affect this.
Continuous current ratings and published time constants for Parker motors are specified when mounted to a
10" x 10" x ¼" aluminum plate in 25 °C free air. If your mounting surface provides heatsinking or thermal
mass significantly different than this, a different value may be appropriate to your application. Note also
that the time constant of the motor winding itself (
winding temperature will initially be much faster than
DMTTCW
Motor Winding Time Constant
Type
Motor
Syntax
<a_><!>DMTTCW<r>
cycle power)
Units
r = minutes
Range
0.00 to 100.00 : ±0.01
Default
0.00
Response
DMTTCW:
*DMTTCW28.40
See Also
DMTMAX, DMTR, DMTTCM, DMTRWC
NOTE: This command does not take effect until you cycle power to the drive, or issue a
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.)
The
command specifies the time constant of the motor winding alone. This is the time for the
DMTTCW
winding to reach 63% of it's final temperature rise above the rest of the motor, given constant power. Note
that this is NOT the time constant usually specified in motor data sheets (see
typically much faster.
(does not take effect until RESET, DRESET or
) is much faster than this; therefore, the rise in
DMTTCW
DMTTCM
(does not take effect until RESET, DRESET or
www.comoso.com
Product
GT6K
GV6K
(applicable only to
servo axes)
RESET
would suggest.
Product
GT6K
GV6K
(applicable only to
servo axes)
RESET
); the
DMTTCM
DMTTCW
Command Descriptions
Rev
n/a
6.0
or
DRESET
Rev
n/a
6.0
or
DRESET
value is
91
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