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3. Information for starting
3.4 Setting the minimum and maximum output voltage
The control units have been adjusted in the factory at a reference drive. In special cases or
after modifications a readjustment may become necessary. Here it must in any case be
observed:
As the adjustment of the output voltage requires feeding of the mains voltage, the following
safety note is very important:
DANGER
Important is the remark that the adjusting devices for the output voltage are not reactionless
towards each other. I. e. that at a change of the maximum voltage the minimum voltage is
slightly changed as well - and vice versa. That possibly means a repeated adjustment of
both trimming potentiometers.
3.5 Changing the soft start time
The soft start, the time-controlled bringing up of the output to the adjusted value is an
effective protection for the oscillating drive against magnet impacts. At small oscillating
drives, which start with high cycle times, the standard time is not necessary in any case, it
does even impede the production flow. At the trimmer SOFT START the run-up time can
be adjusted. As the case must be opened for this change as well, the safety notes mentioned
above should be observed.
28
The output voltage can only be measured with an oscillating
drive being connected.
The measuring device must be designed for real effective
NOTE
measurement. (True-RMS), other measuring devices indicate
random values. The load plug must be plugged in, as
otherwise the measurement possibly takes place in the wrong
measuring mode.
Feed the supply voltage only by means of a safety
transformer. Carry out the measurements in the rooms/zones
permitted for that. This measurement requires the
employment of qualified professionals. After the
measurements the control device must be put back into the
original condition, as otherwise the release of series is
stopped.
Part Feeding 7.0 Hopper & Hopper Controller Rev.5
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