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Fancom 771
INSTALLER: 4. Mounting and installation
When the PROX.1 activates, the computer receives a signal. The computer then determines for which
valve the blend was made, based on the entered distance from the overflow , and gives a Silent alarm. If
the overflow is so large within one feeding cycle that PROX.2 also activates, the computer must give still
an alarm (an extra protection). PROX.2 should also be included in the external alarm circuit.
So-called feeder sensors (PROX.24F) can be mounted in the feeder. Using a feeder sensor the computer
can automatically decide whether another portion can be dosed into the feeder. This avoids the necessity
of checking whether the feeders are too full every day. At the beginning of each feeding cycle the
computer uses the feeder sensor to determine if the feed level is higher than the sensor. If feed sensors
are used it is possible to feed ad libitum. The feeder sensor can be mounted at different heights. The
height depends on the size of the maximum portion. If the feed is just below the feed limit in the feeder
sensor, it should be possible to dose another maximum portion. Use the setting Feeder sensor YES/NO
to indicate per valve if the feeder is equipped with a sensor (see section 6.2). Connect all contacts of the
feeder sensors in series and bring them to one digital input on the terminal strip.
For connection of the feeder sensor, refer to the connection diagram concerned in appendix 1.
Use a 2-core wire for this loop. This will make it easier to detect possible cable breaks.
If the unit consists of a weigher with a hopper below it, the computer must receive a signal when the
hopper is empty. The actual pulse value (and a programmable extra after run) is used to determine
when a following portion may enter the hopper. There is a separate digital input for each circuit. This
signal can be generated by a PROX.24F proximity switch (without programmable delay). Refer to the
diagram concerned in appendix 1.
4.10 Connecting the feeder feedback (optional)
4.11 Connecting the empty report ( for a weigher with hopper)
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