Klockner Moeller Electric Parts from KlocknerMoeller.net
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Electronic motor starters and drives
Connection examples, DM4
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| Enable/immediate stop without
ramp function (e.g. for Emergency-Stop) |
The digital input E2 is programmed in the factory so
that it has the "Enable" function. The soft starter is enabled only when
a High signal is applied to the terminal. The soft starter cannot be
operated without enabling signal.
In the event of wire breakage or interruption of the signal by an
Emergency-Stop circuit, the regulator in the soft starter is immediately
blocked and the power circuit disconnected, and after that the "Run“
relay drops out.
Normally the drive is always stopped via a ramp function. When the
operating conditions require an immediate de-energization, this is
effected via the enabling signal.
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Caution!
You must in all operating conditions always first stop the soft starter
("Run“ relay scanning), before you mechanically interrupt the power
conductors. Otherwise a flowing current is interrupted – thus resulting
in voltage peaks, which in rare cases may destroy the thyristors of the
soft starter. |
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