9
Operating instructions
HERMA 400 OPERATION (VIA THE HERMA 400 CONTROL)
3.28 US (130519) 125/154
9.12.15 950 Unwinder oper. modes
With PWL2 only.
Enter her the operating mode of the unwinder as follows:
00 Standard:
This is the normal mode of the unwinder with penulum control.
01 Slow:
This mode can be used with short labels and long intervals (> 1 sec) between the label feeds. The
unwinder is smoothly accelerated and smoothly slowed down as well.
In most cases the tension spring effect of the pendulum is set to a minimum as well to gently treat
especially sensitive adhesive materials (pendulum is mounted in a floating way).
02 Rollfed:
This mode is conceived for continuous high-speed labeling (customer-specific). A double pendulum is
recommended.
03 Fix: chute + reel end:
With this mode there is no pendulum for the unwinder control. Control of unwinding the adhesive
material is done via light barrier that recognizes the loop in a loop chute.
This control mode is intended for stiff label material where directing the material over the pendulum
roller will inevitably detach the labels.
If the loop falls below a second light barrier an end of reel is triggered. This is required since adhesive
materials may be used which do not easily detach from the the roll (dancer roll required).
Acceleration and deceleration of the drive can be set with a second parameter. The setting of this
parameter msut be adapted to the production process.
Practice has shown that for an optimum a fixed setting is to be preferred to an automatic
determination.
04 Fix: chute + min. li. bar.:
Same as 03, the second light barrier, however, is used for increasing the unwinding speed and not for
an end-of-reel detection.
05 Chute + reel end:
As 03, where acceleration and deceleration is adapted automatically by the program.
06 Chute min./max. li. bar.:
As 04, where acceleration and deceleration is adapted automatically by the program.
9.12.16 951 Unwinder output
With PWL2 only.
Here the control characeristic of the unwinder is set as follows:
00 Automatic:
With the help of this standard setting the basic setting of the unwinder with penulum is effected on the
basis of the operating mode of the applicator and the set maximum speed of the label transort.
Prerequisite: parameter 950 must be set to „Standard“. This means that the operating parameters of
the applicator preset the operating mode for the penulum-controlled unwinder.
If the setting „Automatic“ is not chosen a modification of the drive behaviour can be done with the %-
increments.
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