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7
Technical Reference
7.6
Interface Description
7.6.6
Handling of connection interfaces
Electrical connections
701 Separator motor
.
The separator is equipped with a 3-phase DOL
(Direct On Line) started motor.
There shall be an emergency stop circuit
designed according to EN 418 and a power
isolation device according to EN 1037.
There shall be a start button close to the
separator that shall be used for first start after
assembly of the separator.
There should be a counter to count number of
running hours.
There should be a current transformer to give
an analogue signal to the control unit about the
motor current.
753 Unbalance sensor .
For indication of any abnormal unbalance
and to be able to perform appropriate
countermeasures, the separator may be
equipped with a vibration initiated mechanical
switch on the separator frame.
The vibration monitor shall include a self-check
function to be performed at least at initiation of
STARTING.
If to high vibrations occur the separator shall
be stopped the quickest way possible and it
shall not be restarted until the reasons for the
vibrations have been found and measures to
remove them have been taken.
Signal processing in
STARTING
:
•
If to high vibrations occur the separator shall be
stopped automatically by
SAFETY STOP
.
•
If the self-check system triggers, an alarm shall
be given and an automatic stop by
NORMAL
STOP
shall be initiated.
Signal processing in
RUNNING
:
•
If to high vibrations occur the separator shall be
stopped automatically by
SAFETY STOP
.
•
If the self-check system triggers, an alarm shall
be given.
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