Herma 400 - End of reel and diminishing reel (internal)

9
Operating instructions HERMA 400 O
PERATION (VIA THE HERMA 400 CONTROL)
3.28 US (130519) 101/154
9.3 End of reel and diminishing reel (internal)
Trigger For calculating the label supply the label transport may be triggered via
the START input (normal production), however transport via the
key
will also be part of the calculation. Ta
ke note of the fact, though, that
messages on end of reel will be acknowledged with pressing the key
.
Minimum
transport
Calculating the label supply can be done not before at least approx.
157“
(4 m) of label web were transported (for triggering end of reel approx.
16“ (400 mm) are sufficient). This minimum transport must be effected
each time after the applicator was switched off.
Warning A warning (DIM signal) is triggered if the width of the
label web falls
below approx. 0.6“ / 16 mm (diameter core (=3“/76 mm) + label web is
below approx. 4.3“ / 108 mm).
End of reel End of reel (END signal) is triggered if the label supply is used up,
however not before a minimum transport of app
rox. 16“ / 400 mm (with
preceding DIM signal after 5.9“ / 150 mm already).
End of reel
withou
t signal
If with unfavourable condition end of reel cannot be calculated the
applicator will stop with a series fault of the label sensor.
The functions of diminishing reel and end of reel may be integrated in the unwinder, i.e., no external
sensors
are used but the label supply calculated via internal logic.
Prerequisite for this type of sensing is that the disk for taking up the label reel actuallys rotates, i.e.,
the reel definitely must be clamped firmly (use appropriate sleeve, turn handle of unwinder completely
to the right).
In order to have this logic function correctly the following must also be observed:
Testing the function
> The outputs for diminishing reel (DIM) and end of reel (END) are „high“ active, i.e., 
END=24V=end of reel, 
END=0V=no end of reel (or less than 157“ / 4 m of web transport was effected).
> Insert a label reel with low label supply, at least,
however, approx. 197“ / 5 m of label web .
> Dispense labels (observe above prerequisites (preferably
transport labels via the START input
instead of via the )).