ABB REL 551 2.3 Series Installation And Comissioning Manual page 124

118
Thermal overload protection (THOL)
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The signals THOL-ALARM, THOL-START and THOL-TRIP
should disappear.
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Measure the signal THOL-START until it disappears on the corre-
sponding binary output or on the local HMI unit, take the "T Line"
readings and compare with the setting of TdReset.
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