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42
Configuring Analog Metal Detector
Please read the Introduction to the Control
Panels and Displays section prior to attempting
to adjust the metal detector.
All installation procedures must be complete
before configuring the metal detector.
ANALOG ADJUSTMENT
PROCEDURE
1.
Open the switch to the auxiliary equipment
(reject device, horn, etc.) where fitted.
2.
Switch the power to the metal detector on.
The metal detector will be ready for op-
eration in approximately 30 seconds.
3.
Each unit is supplied with an “Individual
Unit Specifications” test sheet. Consult this
sheet and set the phase control to the
“Product Phase Out” setting. If no listing
is given, set the phase control to the “Vi-
bration Phase Out” setting.
4.
Pass one of the test wands through the
center of the search head opening at the
expected speed that the product will pass.
The light bar should indicate that metal has
passed through the opening.
Set the SENSITIVITY so the DETECT in-
dicator turns on every time the test wand
is passed through the center of the open-
ing. Do not set the Sensitivity higher than
necessary as this can cause false detec-
tions due to the product and/or vibration.
5.
To fully check the operation of the metal
detector, pass an uncontaminated sample
of the product, which has the same size
and mass of that typically encountered,
through the search aperture at its normal
speed of travel. If detection occurs, refer
to the “Phasing out the Product Effect”
section of this manual.
6.
Having adjusted the detector, the auxiliary
equipment can be switched on and the
metal detector system operated.
PHASING OUT THE PRODUCT
EFFECT ANALOG UNITS
Some products are conductive or magnetic in
nature and can produce a signal when passing
through the metal detector.
This signal is known as “PRODUCT EFFECT” and
can be “PHASED OUT” by using the front panel
controls as follows:
1.
Obtain a sample of the product which is char-
acteristic of that which will normally pass
through the metal detector. Without a product
or metal signal present, the MONITOR should
display two green LED’s. As a product passes
through the aperture, the red LED’s on either
side of the two green LED’s light. As the prod-
uct enters the aperture, note that one side of
the red LED’s lights first; this is the INITIAL
DEFLECTION of the Monitor. As the product
continues through the aperture, the initially lit
LED’s go out and the LED’s on the other side
of the Monitor light. As the product exits the
aperture, the red LED’s go out leaving only the
two green LED’s lit.
2.
Adjust the Phase switch to 00.0.
3.
Pass the product through the aperture of the
metal detector in a manner consistent with nor-
mal production process techniques (e.g. on the
conveyor, in a chute, etc.). If it is necessary to
pass the product through the aperture manu-
ally, the hand must not come close to the ap-
erture because it will affect the metal detector.
In this case place the product on a piece of
wood or plastic and push it through the aper-
ture. The sample used to phase out the prod-
uct effect must have the same properties (e.g.
temperature, size, orientation, moisture con-
tent, component composition, etc.) as that
which will be scanned during production.
NOTE: Throughout the following adjust-
ment procedure, always be sure to pass
the product through the aperture in the
same direction.
Содержание E-Z TEC IV
Страница 58: ...58 Figures cont Figure 5 Detect Modes...
Страница 59: ...59 Figures cont Figure 6 E Z Tec Major Components Figure 7 E Z Tec Power Supply Analog Version Shown...
Страница 60: ...60 Figures cont Figure 8 Metal Free Area Figure 9 Typical Conveyor Showing Intermittent Current Loops...
Страница 62: ...62 Figures cont Figure 12 Metal Detector Mounting Feet Figure 13 Conveyor Belt Splices...
Страница 63: ...63 Figures cont Figure 14 Electrical Connections...
Страница 64: ...64 Figures cont Figure 15 Analog Version Control Panel...
Страница 67: ...67 Figures cont Figure 19 Flowchart of MPC Menu Structure...
Страница 85: ...85 Appendix C cont Vertical Reject Units Figure C2 E Z Tec IV and V Vertical Reject Sensing Head...
Страница 88: ...88 Appendix D cont Slim Tec Single Surface Units Figure D1 E Z Tec IV and V SlimTec Single Surface Schematic...
Страница 93: ...93 Figure E2 E Z Tec IV and V SlimTec Aperture Metal Free Area Appendix E cont Slim Tec Aperture Units...
Страница 96: ...96 Appendix F cont VFS Packaging Machine Metal Detectors Figure F1 VFS Metal Detector Schematic...
Страница 97: ...97 Appendix F cont VFS Packaging Machine Metal Detectors Figure F1 VFS Metal Detector Metal Free Area...
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