Safeline Signature, Руководство по эксплуатации и инструкция

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OPERATING INSTRUCTIONS
50 4618 - 021
Product Signal Cancellation
NOTE
This feature will only be helpful in a minority of
applications where the product characteristics and
presentation produce a consistent product effect
signal
Phasing out a product effect signal whether manually
or automatically very often does not eliminate the
product signal entirely. The remaining signal normally
means that the sensitivity of the detector must be
reduced to eliminate the product signal entirely, and
this in turn leads to reduced performance. Product
signal cancellation aims to eliminate any remaining
product effect signal without the need for running at
reduced sensitivity.
PSC may only be used on certain applications that fall
within the following guidelines;
•
The product has to be discrete, not continuous.
•
The products must be similar in constituency and
size.
• The products must be on a constant speed line
(minimum speed 10 m/min).
Carrying Out Automatic Setup
The operator is not required to take any action for
most of the displays other than to pass the product
when instructed.
(1) Ensure that the conveyor is running.
(2) Ensure
no
product is passing through the detector.
When this display is showing, pass the product
through the aperture in its normal manner to create a
worst case product effect signal, for more details refer
to ‘Notes On Passing Product Through The Detector’
earlier.
If the detector does not detect any product being
passed within a thirty second period, the unit will
revert back to the display from which automatic setup
was started.
•
A pack sensor must be used, (mounted as close
to the detector as possible).
•
The products must pass through the detector with
consistent orientation and position.
• The products must be setup using the detectors
automatic setup facility.
•
The maximum value of sensitivity is not already
being used without PSC.
•
The products must have a maximum pack length
of 1m.
•
Sufficient space between successive packs for
the pack sensor to be able to distinguish
individual packs.
PSC can NOT be used if any of the following
circumstances are present;
• The product is loose or has a variable
constituency.
•
The system is a pipe line, gravity feed, or variable
speed system.
•
The products presentation cannot be guaranteed
to be consistent.
•
More than five products packs may be influencing
the metal detector at the same time.
(3) Select a sample product.
(4) Select auto-setup and follow the displayed
instructions. Most of the displays will require no
operator interaction. The exceptions to this rule are
shown below.