Safeline STANDARD SERIES, Instruction Manual

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PROGRAMING THE DETECTOR
GENERAL
At this stage the metal detector should have been installed
and configured and the user be familiar with the basic
operation of the control panel as described in previous
sections.
The Safeline detector has the ability to store settings for 21
different product numbers. Each product number represents
a group of settings, the appropriate setting of sensitivity,
phase, timer type and inverse detection may be allocated to
each product number.
Sensitivity and phase when set correctly will optimise the
detection sensitivity while selection of timer type will
optimise reject operation, for different pack lengths or
speeds. Inverse detection will allow the action of the reject
timer, in the selected product number, to be reversed.
For most products the optimum setting of the detector will
be with phase 0000. With products exhibiting a product
effect improved detection sensitivity may be achieved by
aligning the phase discriminator to the product signal.
To decide which of the two set up conditions give the best
sensitivity it will be necessary to set up the detector first with
phase 0000, and then, with phase aligned to the product
effect. Comparison should be made between the two results
and the most favourable setting selected.
Before making an adjustment to the detector ensure that
product is continually moving through the detector aperture
in its usual manner.
NB:– The detector will not operate correctly with product
stationary in the aperture.
Worst case, product effect condition, ie. greatest
disturbance of the coil system/largest product signal is
experienced when the coil system condition changes from
no product to maximum product. This is because the
detector senses the changes in the amount of product in the
detector.
lf the product is in a continuous strip a large product signal
may be experienced from the leading face followed by a
much reduced signal as the product fills the detector.
With boxed/cartoned product the worst case
condition occurs as the box enters and leaves the detector.
The gaps between the boxes will create the worst case
product effect condition. If the boxes are touching a reduced
product signal will result.
NON PRODUCT EFFECT APPLlCATIONS
If when set at phase 0000 and sensitivity at maximum there
is no product signal visible on the LED bar graph, as will be
the case with most dry products. Adjustment of the detector
is simply a case of adjusting the sensitivity to give the
required detection standard, ie 1.0, 1.5, 2 Fe etc. To do this
use the following procedure:–
1) Ensure product is flowing thorough detector in normal
manner.
2) Enter Supervisor/Engineer Access Code.
3) Select appropriate product number.
4) Manually set phase to 0000.
5) Adjust sensitivity and check detection level with metal
sample passing through detector.
6) Press ’Enter’ to enter new values in memory.