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7.3.6. Monitor for Software Thermal Loading: Monitor TJ
The Driver Unit is always computing the heat generation and radiation of the Motor using the
current flowing, to estimate the temperature rise of the Motor.
The warning A3 (Software thermal loading) occurs when a rise of the Motor temperature, which
is resulted from the calculation, exceeds the threshold.
Fig 7-32: Example of the moniotr (TJ/RP)
:
TJ/RP
TJ 0 _
The readout value of the monitor TJ (Thermal loading) is between 0.00 to 100%. If the
monitored TJ value is not zero (TJ > 0), the effective torque is exceeding the rated torque, thus
indicating the Motor is generating heat.
In consequence, it is essential to keep the readout of monitor TJ to zero (0) for continual “user
defined” cycle operation.
Fig 7-33: Check of thermal loading after one cycle
One user defined cycle
Motor motion
Monitor TJ
Next cycle operation
is acceptable if
Monitor TJ = 0%.
100.00%
0.00%
Threshold of
temperature
rise
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