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8.3.2.4. Thermal Loading: Outputs TJU (Thermal Loading, Under) and TJO (Thermal Loading,
Over)
Outputs the conditions of thermal loading against the threshold.
It is useful to decide if the System can start the next operation cycle by confirming the condition
on the thermal loading to the Motor.
Table 8-20: Parameter related to the outputs TJU and TJO
Parameter
(code)
Function
Initial
setting
Data range Unit
TJU
Threshold: thermal loading, under 0.00 0.00 to 100.00 %
TJO
Threshold: Thermal loading, over 0.00 0.00 to 100.00 %
The output TJU closes when the setting of parameter TJU is less or equal to the threshold.
The output TJO closes when the setting of parameter TJO is greater or equal to the threshold.
If the Motor is forced to rotate exceeding its rated conditions, it continues overheating, and
eventually the warning A3 (Software thermal loading) occurs.
When the thermal loading increases beyond 0% in the middle of one ‘user defined’ operation
cycle, you require holding the next operation until the thermal loading becomes zero (0).
Fig 8-9: Confirmation of starting operation cycle (Parameter JUO)
User defined one cycle
Motor rotation
Thermal
loading
Feasible to start
the next cycle
100.00
0.00
Threshold fo
warning A3
closed
open
Output TJU
Max. 1 ms Max. 1 ms
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