Filtec FT-50 Manual de instalación
Document 40378-0502
Dud Inspection Operation Manual
Can and Bottle Inspection
for the FT-50 and FT-70
Industrial Dynamics Company, Ltd.
Document 40378-0502 Copyright. All rights reserved.
No part of this publication may be reproduced or used in any form or by any means (graphic,
electronic, or mechanical including photocopying, recording, taping, or information storage
and retrieval system) without written permission of Industrial Dynamics Company, Ltd.
Filtecand Industrial Dynamicsare registered trademarks of Industrial Dynamics Company,
Ltd. All other trademarks are the property of their respective owners.
Contact Information
Corporate Headquarters: 3100 Fujita Street,
Torrance, California
90505-4007
U.S.A.
Telephone:(310) 325-5633
FAX: (310) 530-1000
Internet: www.filtec.com
Mailing Address: P.O. Box 2945,
Torrance, California
90509-2945
U.S.A.
Shipping Address: 3100 Fujita Street,
Torrance, California
90505-4007
U.S.A.
Customer Service: (800) 733-5173
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Document 40378-0502
Dud Inspection Overview
Dud inspection detects improperly sealed vacuum or pressure
sealed containers. If the container is not sealed properly, the
container shape is distorted and the dimensions at the inspection
reference point will deviate from a correctly sealed container.
When inspecting cans the reference point is the lid and when
inspecting bottles the reference point is the cap seal button.
Figure 1. Lid and cap characteristics of vacuum and pressure
sealed containers.
If a container is pressurized properly and the seal is intact, the
pressure will distort the lid or cap by raising it (pressurized) or
indenting it (vacuumed). If the container is not pressurized
properly, or the seal is not intact, the cap is not raised or
indented as there is low pressure or indented as there is over
pressure.
1
2
3
4
No. Description
1 Vacuum seal good as lid is indented.
Pressure seal bad as lid is indented (dud).
2 Vacuum seal bad as lid is raised (dud).
Pressure seal good as lid is raised.
3 Vacuum seal bad as cap button is raised (dud).
Pressure seal good as cap button is raised.
4 Vacuum seal good as cap button is indented.
Pressure seal bad as cap button is indented (dud).
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As the container passes under the proximity sensor the sensor
determines if the seal is intact based on the distance between
the sensor and the top surface of the lid or cap. If the lid or cap is
too far from the sensor, the pressure seal is not intact because
the cap is not raised high enough by the container pressure.
Figure 2. Containers passing under the dud inspection sensor.
When configuring dud inspection you must pass both good and
bad containers through the inspection tunnel to perform the
automatic calibration procedure. This determines the threshold
settings for good and bad containers. During inspection each
container is compared to these thresholds and non-conforming
containers are rejected.
For proper inspection, the overall variation in can height should
be no more than 1/16 inch (1.5 mm). The containers must flow
smoothly under the exact center of the dud sensor as they travel
on the conveyor.
Note: Low threshold defines the low pressure or over vacuum
and high threshold defines the over pressure or low vacuum.
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Document 40378-0502
Container Changeover
When changing to a container type that does not require dud
inspection:
1. Press Key 5 until Dud Status appears and press the Arrow Key
to turn dud inspection off.
2. Perform the container fill level changeover as explained in
the inspection unit Operation Guide.
3. Verify the dud sensor is raised out of the way, so that it is not
will not be struck by the containers.
When changing to a container type that requires dud Inspection:
1. Perform the container fill level changeover as explained in
the inspection unit Operation Guide. This places the
proximity sensor at the correct height above the can.
2. Repeat the dud sensor alignment procedure. For more infor-
mation see Dud Inspection Sensor Alignment on page 4.
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Document 40378-0502
Dud Inspection Sensor Alignment
Before you align the dud sensor you must configure the inspection
head and inspection trigger to the proper height for fill level
inspection and calibrate the fill level inspection. Align the dud
sensor immediately after all fill level inspection adjustments are
complete. For more information refer to the service manual
provided with you inspection unit.
Also, verify the following:
• The containers are centered on the conveyor so they pass
directly under the center of the dud sensor.
• The dud sensor face is parallel with the top of the
containers.
1. Locate several good production containers. These should be
containers that pass all inspections. If the height of the
containers varies slightly, select the container that is the
shortest.
2. With the conveyor moving slowly and no production
containers present, place the good container on the conveyor
upstream of the inspection head.
3. Watch the container as it passes under the dud sensor and
verify the container is centered directly under the dud sensor
as it passes under the sensor.
4. Stop the conveyor and place the center the good container
directly underneath the dud sensor.
Note: Aligning the dud sensor can change the height of the
inspection trigger. After you align the dud sensor, verify the
inspection trigger height has not changed.
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Document 40378-0502
5. Unlock the dud sensor height adjustment mechanism and
adjust the height of the sensor so the sensor’s face is 3/32
±1/32 inch [3 ±1 mm] above the container.
Figure 3. Centering a container under the sensor and adjusting
the height of the sensor.
1
2
3
3
No. Description
1 Height Adjustment Locking Lever
2 Bracket Pivot Hinge allows deflection if hit by container.
3 3/32 inch [3mm] space between can rim or bottle cap.
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Document 40378-0502
6. Verify the dud sensor face is parallel to the top of the can. If
necessary, use the adjusting screw to change the angle. When
complete, tighten the adjusting screw and its locknut
securely.
Figure 4. Level the sensor bracket parallel to the container top.
7. Press Key 5 until System Display appears.
8. Press the Arrow Key until Calibrate appears in the bottom line
of the display, and if prompted, enter the password to access
the Calibrate Mode.
9. Press Key 2 until Dud Status appears and verify the status is
turned on. If not, press the Arrow Key until ON appears. Dud
inspection is now activated.
10.Press Key 2 until Dud Readings appears. Four (4) readings are
listed on the bottom line. The reading marked C= is the
current dud sensor reading.
1
2
3
4
No. Description
1BracketPivotHinge
2 Bracket Leveling Adjustment Screw
3 Bracket is parallel with lid or cap
4 Direction of container flow
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Document 40378-0502
11.Unlock the inspection (centerline) trigger adjustment
mechanism and raise or lower the sensor very slightly until
the C= reading is between:
• 120-140 for cans
• 70-90 for bottles
Record the position of the trigger on the trigger height scale
for ease of future container changeovers.
Figure 5. Fine tuning the sensor position.
12.Lock the inspection (centerline) trigger adjustment
mechanism.
13.Press the Key 5 until Container Width At Trigger appears and
verify the width of the container at the point where it inter-
sects the trigger is correct. For more information refer to the
Service Manual provided with your inspection system
1
2
3
No. Description
1 Centerline Bracket Height Locking Lever
2 Centerline Bracket Positioning Lever
3 Dud Sensor Bracket attached to Centerline Bracket
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Dud Inspection Software Setup
1. Align the dud sensor. For more information see Dud Inspection
Sensor Alignment on page 4.
2. Prepare five good containers and four bad containers to use
during the calibration procedure.
• The good containers should be containers you are certain
will pass dud inspection and any other inspection enabled
on the inspection unit.
• The bad containers should be containers that you are
certain will fail only dud inspection, but pass all other
enabled inspection processes. For more information see
How to Create a Dud Container on page 12.
3. Press the Key 2 until Reject Undefined appears and press the
Arrow Key to turn the function On. The Reject Undefined
function enables rejection of any containers that give faulty
dud readings. These readings can be caused by:
• off-centered containers.
• containers with bulged, missing, deformed or abnormal
lids.
• bulged lid containers which struck the dud sensor bracket
and passed under the sensor before the bracket returned
to position.
• the sensor being too close to or too far away from the
container.
A low priority diagnostic will be generated for each undefined
reject to explain the cause of the reject.
Note: Turning the Beacon Status is on while setting up the dud
inspection enables low priority diagnostic messages, that can
help provide feedback about errors that can occur during the
setup procedure.
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