Protective Elements
External Start Blocking
A motor can be blocked through a digital input. If this feature is enabled, the User must make sure that both the
Motor Start and Digital Input modules are configured properly.
Thermal Block
Besides the previously mentioned start monitoring and controlling means, the motor can be blocked if the
thermal capacity used exceeds the alarm level. It is the User’s choice to turn on or off this feature and set an
appropriate alarm level in the thermal model module.
Forced Starting
It is recommended that the User wires the »MS
TART
.B
LO
« output to the motor trip circuit for preventing the motor
from starting under these blocked conditions. If the User chooses not to do this for their applications, a Forced
Starting signal will be set when the motor is started with the blocked conditions. This signal can only be reset
manually though
Smart View
or from the front panel (please refer to section Emergency Override).
Motor Start / Transition Trips
The Motor will be tripped during the start phase, in case that:
•
The Start Control detects an unsuccessful Start (Please see section Start Control Module).
•
There is an Incomplete Start Sequence. The device detects via an digital input, that the external
process is not properly started.
•
If a reverse direction is detected but reversing is not allowed.
•
If case of a Zero Speed Switch failure.
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EN MRM4 01/11
Содержание MRM4
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Страница 18: ...Important Definitions Page 18 EN MRM4 01 11 41 SG Prot ON 42 SG ON Cmd SG Prot ON SG ON Cmd...
Страница 115: ...Navigation Operation Navigation Operation EN MRM4 01 11 Page 115 1 2 3 5 7 6 8 10 9...
Страница 162: ...Recorder Name Description I 2 TripCmd Signal Trip Command Page 162 EN MRM4 01 11...