CVC TECHNOLOGIES, INC. CVC 400 OPERATION MANUAL
11.13 Labeling Sensing (LAB SENS) Adjustments
a. Label sensing refers to the sensing of the backing paper translucency or opacity; the sensitivity of
the label sensor can be adjusted.
b. The product (bottle), label thickness, material and opacity will be considered together, as the sensor
sensitivity is automatically adjusted by the SelfSet
TM
and no manual adjustment is necessary.
c. Backing paper should pass through the label sensor slot during automatic adjustment. The SelfSet
TM
will set the sensor sensitivity based on the measured paper translucency. Both measured value and
calculated value will then be displayed as the following, modifications are not recommended unless
special situation is required.
MEMORY: 01
F2 SENSITVY:
F3 LAB LENS:
d. F2 SENSITVY: This backing paper opacity is measured by the sensor.
F3 LAB LENS: Due to the values of the backing paper opacity on the same label roll may be varied
within a certain range, a reference value F3 LAB SENS is established by the SelfSet
TM
to distinguish
labels from backing paper. (e.g.: If the measured opacity value of the backing paper is 60, a
reference value of 90 will be established, and then all opacity readings under 90 are considered as
backing paper values, while all readings above 90 are considered as labels.)
A signal is emitted when the sensor detects the backing paper passing through it, the gap between
two labels is then determined.
e. From the above example, there are two situations where F3 LAB SENS adjustment is required:
- The various opacity value of the backing paper presents a peak value higher than the reference
value; the sensor will fail to detect the gap between labels and two or more labels will be dispensed
at a time instead of only one label. The F3 LAB SENS value should be increased in this case. (e.g.:
The reference value is established as 90, but some portions of the backing paper with a value of
95. In this case the reference value F3 LAB SENS should be increased to 125.)
- The various opacity value of the labels presents a minimum value lower than the reference value,
the thinner portions of the label will be mistaken as gaps and labels may be dispensed incompletely.
(e.g.: The reference value is established as 90, but some labels present a thin portion with a value
of 85. In this case the reference value F3 LAB SENS should be decreased to 60.)
f. Two or more labels dispensing may also be caused by an incorrect detecting point of the label
sensor to label (e.g. If the sensor detecting point is positioned on the label edge as shown in Fig. A
& B). In these two cases, the label extension (EXTNSN) should be adjusted to shift the label
stopping position, thus the sensor detecting point will fully fall on the label (Fig. C).
11 - 9
To Next Page
Loading...
