DSE Model 8620 AMF Controller Operators Manual
99
9 SYNCHROSCOPE OPERATION
Hz +2.9
V +0.2
Initial stage of Synchronising display will only show
the difference between the Mains Supply and the
Generator Output. Here the display is showing a
frequency mismatch of +2.9Hz - The genset
frequency is too high (indicated by the arrow) and
should be reduced. The voltage is +0.2 volts high, but
is within the limits set for synchronising.
Hz +0.9
V +0.2
Once the difference between the Mains and the
Generator frequency has been reduced, the
‘Synchroscope’ display will become active. The
moving bar will roll from one side to the other showing
the phase of the two supplies. The area in the centre
of the scope indicates the set limits for synchronising
to occur.
Hz -0.2
V +0.2
Synchronising will only occur when both the
Frequency and the voltage differences are within
acceptable limits - Indicated by ‘Tick’ marks on the
top of the display. Then the moving bar display will
show the phase difference. The engine speed will be
automatically adjusted, altering the phase, until the
moving bar enters the centre of the scope.
Hz -0.2
V +0.2
Once the Mains and generator supplies are
synchronised, the module will initiate a breaker close
signal to load the generator onto the Mains. Should
synchronism be broken the moving bar will pass out
of the synchronising window.
Note: - If the module display is showing the status page when the synchronising process begins, the
module will automatically switch to the Synchroscope page. The ramp progress will also be displayed on
the screen once paralleling has taken place.
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