ABB RELION REX640 Technical Manual page 1660

Section 11
General function block features
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GUID-1BC23C9A-BF10-45EC-AF61-BE70856AC092 V1 EN
Figure 850: Operation of the counter in drop-off
In case 1, the reset is delayed with the Reset delay time setting and in case 2, the
counter is reset immediately, because the Reset delay time setting is set to zero.
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Figure 851: Drop-off period is longer than the set Reset delay time
1MRS759142 C
REX640
Technical Manual