The OPERATE output of the component is activated when the cumulative sum of the
integrator calculating the overvoltage situation exceeds the value set by the inverse
time mode. The set value depends on the selected curve type and the setting values
used. The user determines the curve scaling with the
Time multiplier
setting.
The
Minimum operate time
setting defines the minimum operate time for the IDMT
mode, that is, it is possible to limit the IDMT based operate time for not becoming
too short. For example:
Figure 618: Operate time curve based on IDMT characteristic with Minimum operate
time set to 0.5 second
General function block features
1MRS757644 H
1154 620 series
Technical Manual
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