Loctite 97211 User manual

1
Operating Manual
Bedienungsanleitung
Online Preamplifier
Online-Vorverstärker
97211

2
R
97115
97118
97119
R
R
R
97110
Change
Off
OnPower
Refill
Empty
97106
97125
97108
97127
97110
97123
R
97123
ESC
97103
97204
R
97103
ESC
A
B
A
B
BA
97115
97118
97119
97211
Loctite Deutschland GmbH
Madein Germany
cat.no. 97211
R
97211
Output
1V
5V
10V
1x 2x
1x
2x
1x
2x
2x
1x
1x 2x
Z6113100
Z6113300
Z6113100
Z6113300
97153
97204
1
ESC
Num
0
9
6
-
8
Start
3
P
45
2
7
A
B
C
D
97153
+
4x

3
Contents
English......................................................................................................................4-32
Deutsch...................................................................................................................33-59

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Contents
1 Please observe the following......................................................................................6
1.1 Emphasized Sections.....................................................................................................6
1.2 Items Supplied................................................................................................................7
1.3 For Your Safety..............................................................................................................7
1.4 Field of Application (Intended Usage)............................................................................8
2 Description....................................................................................................................9
2.1 Theory of Operation .......................................................................................................9
2.2 Displays, Operating Elements and Connections..........................................................12
3 Technical Data............................................................................................................13
4 Installation ..................................................................................................................14
4.1 Enviromental and Operating Conditions.......................................................................14
4.2 Space Requirements....................................................................................................14
4.3 Connecting the Unit......................................................................................................15
4.3.1 Automatic Controller 97123..........................................................................................15
4.3.2 Dual Channel Automatic Controller 97103...................................................................15
4.3.3 Pressure Sensor...........................................................................................................16
4.4 Disconnect the Pressure Sensor..................................................................................17

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5 Measuring...................................................................................................................18
5.1 Adjusting of the Dispense Quantity..............................................................................18
5.2 Adjusting the Preamplifier 97211.................................................................................19
5.3 Setup at the Controller.................................................................................................20
5.4 Storing a Reference.....................................................................................................21
5.5 Monitoring....................................................................................................................22
5.5.1 Normal Monitoring Mode..............................................................................................22
5.5.2 Extended Monitoring Mode..........................................................................................24
5.6 Software Interface for Statistic Process Control (SPC)................................................25
6 Care, Cleaning and Maintenance..............................................................................27
7 Troubleshooting.........................................................................................................27
8 Annex..........................................................................................................................28
8.1 Spare Parts..................................................................................................................28
8.2 Pin Assignment............................................................................................................29
8.2.1 4 pin Plug for Connection to Controller........................................................................29
8.2.2 4 pin Socket for Connection to the Pressure Sensor...................................................29
8.2.3 PLC Interfaces XS 5 Controller 97123 and XS 9 Controller 97103 (internal voltage)..30
8.2.4 PLC Interfaces XS 5 Controller 97123 and XS 9 Controller 97103 (external voltage).31
8.3 Declaration of Conformity ............................................................................................32

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1 Please observe the following
For safe and successful operation of the unit, read these instructions completely.
If the instructions are not observed, the manufacturer can assume no responsibility.
Be sure to retain this manual for future reference.
Refer to the technical data sheet for the LOCTITE-product used at www.loctite.com or
contact your local technical department.
1.1 Emphasized Sections
Warning!
Refers to safety regulations and requires safety measures that protect the operator or
other persons from injury or danger to life.
Caution!
Emphasizes what must be done or avoided so that the unit or other property is not
damaged.
Notice
Gives recommendations for better handling of the unit during operation or adjustment as
well as for service activities.
The numbers printed in bold in the text refer to the corresponding position numbers in
the illustration on page 12.
•The point emphasizes an instruction
step.
Instruction steps in the illustrations are
indicated with arrows.
When several instruction steps are
indicated in an illustration, the shading of
the arrow has the following meaning:
Black arrow =1st step
Grey arrow =2nd step
White arrow =3rd step

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1 Please observe the following
1.2 Items Supplied
1 Preamplifier 97211
1 Connection Cord Preamplifier to Controller
1 Operating Manual 97211
Purchasing the Preamplifier 97211 includes the permission to use the monitor software
of the controller 97103 and 97123.
As a result of technical development, the illustrations and descriptions in this instruction
manual can deviate in detail from the actual unit delivered.
1.3 For Your Safety
Only an authorized Loctite service representative may repair the unit.
Observe manufacturer’s instructions!

8
1 Please observe the following
1.4 Field of Application (Intended Usage)
The integrated flow monitor of a Loctite controller in connection with the Preamplifier
Online Monitor 97211 is used for monitoring the quality and quantity of adhesive
dispensed on parts, i.e. the flow monitor recognizes and evaluates dispensing defects
with respect to quality and quantity. Such defects include:
– Air bubbles in the dispensing system
– Pressure changes in the dispensing system
– Lost or clogged dispensing nozzle
– Touch down of dispensing nozzle onto substrate.
It has been designed specifically for applications requiring high accuracy in dispensing
Loctite adhesives. It is an ideal tool for quality assurance. The flow monitor is used
mainly in the following types of workstations:
– Manual work stations handling precision manufacturing jobs or safety relevant parts.
– Assembly lines with robot stations.
– Assembly lines with automatic in-feed and out-feed.
– CNC workstations.
Necessary Loctite controllers:
– Automatic Controller 97123 or
– Dual Channel Automatic Controller 97103.
In order to integrate such a monitoring system in the production process a special
dispensing valve with an integrated pressure sensor is required.

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2 Description
2.1 Theory of Operation
The integrated flow monitor of the Loctite controller in connection with the Preamplifier
97211 measures the dispense pressure characteristic by means of a pressure sensor
and stores this parameter. The pressure sensor is integrated in the dispensing valve.
The measuring time corresponds with the dispense time sequence. The controller
compares the measured pressure characteristic with a previously stored reference
characteristic, based on four different criteria:
– Dispensing time
– Integral of pressure characteristic; corresponds with quantity of product dispensed
– Length of envelope curve for pressure characteristic
– Center of gravity
If the measured values are within the pre-set tolerance zone, this dispensing cycle is
recognized as o. k. and the ready signal will be available. If the deviation is outside the
tolerance zone, this dispensing cycle is detected as an error, and a fault is signaled.
This message is indicated on the display at the controller. It is also provided as a signal
at the socket XS 5 of the Automatic Controller 97123 or at the socket XS 9 of the Dual
Channel Automatic Controller 97103. This signal has to be acknowledged.
Integral (I)
P
Gesamtdosierzeit (T)
Total Dispensing Time t
Hüllkurve (H)
Envelope Curve1. Offset
1st Offset
2. Offset
2nd Offset
Normaler Druckverlauf mit einem Dosierventil
Typical Pressure Characteristic with a Dispensing Valve

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2 Description
It measures the last preceding dispensing cycle relative to a reference measurement
previously recorded and found to be o. k. All adjustments have to be done in the setup
menu of the controller, to make sure that authorized personnel can store this reference
value only. Tolerance can be adjusted in 3 preadjusted ranges (low = 15%, middle =
35% or high = 55%) or from 1 to 99% to define the optimum between frequent false
alarms and reliable fault detection, see operating manual of the used controller. This
value affects the tolerance of the monitored parameters of integral and length of
envelope curve.
Referred to the length of the envelope curve the tolerance value actually indicates
accuracy in %. An air bubble, a clogged needle or a needle touchdown each has a very
strong effect on the envelope curve length of the pressure characteristic. Therefore this
is generally the governing parameter for dispense monitoring.
Ten different dispense quantities can be monitored by the controller. The order of storing
is fixed, but the reference can be selected per user’s own choice. The advantage is, that
different quantities on various work pieces can be preselected according to the user’s
requirement via the serial interface.
P
t
Luftblase
Air bubble
Aufsetzer
Needle touch-down
Normaler Druckverlauf mit Schneckenpumpe
Normal Pressure characteristic with Rotor Pump
250 ms 500 ms 750 ms 1000 ms 1250 ms