Parker Hannifin 88-021610-01G - Manual (Page 116)

Parker Hannifin
116 Aries User Guide
DMTSWT Motor temperature switch type
Type Motor configuration Product Rev
Syntax <a_>DMTSWT<i> Aries 2.10
Units i = motor temp switch type
Range 0 (Normally closed switch)
1 (Positive temperature coefficient thermistor)
2 (Normally open switch)
3 (Negative temperature coefficient thermistor)
Default DMTSWT0
Response DMTSWT: <*>0
See Also DTHERM , TMTEMP
DMTSWT sets the type of motor switch used. Values of 0 or 1 behave exactly
the same and are interchangeable. DMTSWT3 specifies a negative
temperature coefficient thermistor. In this case TMTEMP reports the higher of
the motor thermal model value or the calculated thermistor temperature,
once the thermistor temperature is above 60 degrees C. The drive faults with
a motor temperature fault at a thermistor temp of 105 degrees C or the motor
thermal model setpoint (whichever is lower) when DMTSWT is set to 3.
The default value for this command is DMTSWT0 and will work with both
positive temperature coefficient thermistors or normally closed switches.
DMTTCM Motor Thermal Time Constant
Type Motor Product Rev
Syntax <a_>DMTTCM<r> Aries 1.0
Units r = minutes
Range Ш.Ш to 12Ш.Ш : ±Ш.1
Default Ш.Ш
Response DMTTCM: <*>3Ø.4
See Also DMTR , DMTTCW
Auto-Setup : When using a Parker motor and the Aries Support Tool, this
command is automatically set for the selected motor.
If you did not use the Aries Support Tool, are using non-Parker motors, or
sent an RFS command to the drive, the parameter is set to zero (0)—you
must manually set this parameter to a non-zero number.
For a list of auto-configured commands, see
DMTR .
The DMTTCM command specifies the thermal time constant of the motor and
its mounting. The drive uses this value to help protect the motor from thermal
damage. It describes the length of time the motor takes to reach 63% of its
final temperature, given constant power. Note that the motor mounting
affects this measurement.
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 open
air. If your mounting surface provides heat-sinking or thermal mass
significantly different from this, a different value may be appropriate to your