Filtec FT-50 Manuale di installazione

Document 40378-0502

Dud Inspection Operation Manual

Can and Bottle Inspection

for the FT-50 and FT-70

Industrial Dynamics Company, Ltd.

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.

Filtecand Industrial Dynamicsare 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

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.

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).

2Dud Inspection Operation Manual

Document 40378-0502

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.

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.

4Dud Inspection Operation Manual

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.

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.

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.

6Dud Inspection Operation Manual

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.

No. Description

1BracketPivotHinge

2 Bracket Leveling Adjustment Screw

3 Bracket is parallel with lid or cap

4 Direction of container flow

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

No. Description

1 Centerline Bracket Height Locking Lever

2 Centerline Bracket Positioning Lever

3 Dud Sensor Bracket attached to Centerline Bracket

8Dud Inspection Operation Manual

Document 40378-0502

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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