00195398-0103-AI-01005Paket_DE_EN - 第73页
Asse mb ly In st ruct i on s 0100 5- Pac ket Edi t io n 12 /200 7 73 – C auses at the comp onents: – I s the tape cover foil sticky? – D o the c ompo nents slip easily out of the component pockets when the t ape cover fo…
Assembly Instructions 01005-Packet
Edition 12/2007
72
4.1.2.1 Error: Bad Error Rate
Components are placed flipped, upright or tilted at the nozzle when viewing the vision life image;
Components jump out of the component pocket or stick to the extracted tape foil during feeder
synchronizing. 4
– Causes at the feeder:
– Does the feeder synchronize with delay? > Remove extracted tape foil from feeder > Tape
must unroll smooth-running from tape reel!
– Is the pickup position or the pitch set correctly?
– Is the feeder cover cap closed properly?
– Is the discharged spacer available?
– Is the foil extraction clean?
– Is the correct feeder 00176100.xx in use?
– Is the tape placed onto the spacer or does it bounce?
– Does the feeder stay in pickup position during synchronizing?
(Verification suggestion: via LP camera in the ("Display setup" => "Correct position") menu.
Pickup position will be started up. If the feeder is synchronized repeatedly, the pickup posi-
tion must not move around).
– Causes at the machine:
– Is the feeder position recognition active?
– Has the component pocket not been recognized properly during feeder position recogni-
tion? (Verification suggestion: via LP camera in the (Display setup > Correct position menu).
If necessary, repeat the feeder position recognition with the component in the tape slot (Dis-
play setup > Feeder position recognition).
– Is the automatic compressed air switch off active? Reduce switch off time, if necessary.
– Are the nozzles soiled, worn out or put on the wrong way? Verification possibility through
individual functions (Gantry > <Nozzle offsets revolver head > new measurement).
– Replace all nozzles displayed as soiled or worn out with clean ones.
– For SIPLACE D4 only: Has the changeover table height been adjusted so that the feeder
position recognition will function reliably?
Assembly Instructions 01005-Packet
Edition 12/2007
73
– Causes at the components:
– Is the tape cover foil sticky?
– Do the components slip easily out of the component pockets when the tape cover foil is
stripped off?
– Have the components been stored in an area too dry? After opening the component tape
packaging, wait a few moments until a humidity exchange between the environment and
the component tape has taken place. (approx. 30min depending on the difference in humid-
ity).
4.1.2.2 Error: Face-Down Error, GF Out of Tolerance (Vision Error)
Wrong face-down error at resistors; Component shape measurements out of tolerance 4
– Causes at the machine:
When dealing with the 01005 resistors, we recommend to activate the face-down recognition in
the component shape description. This will set the default value for a grey zone limit of 127 for
flipped components. In order to determine the exact value, during pickup you can wait until a com-
ponent actually sits flipped at the nozzle and this is displayed as face-down in the vision errors.
Go to View => "Vision measurement context" to activate this vision dump and use the cursor to
define the grey tone for the component upper side. In addition, you need the grey tone for the com-
ponent lower side. You can determine the grey tone for example in the => "Measure component
and edit component shape data" => "Test component" menu. Use the pointer and move to the
component lower side. The mean value of both grey tones yields the threshold value for the face-
down recognition. Enter this threshold value at the station in the "Measure component and edit
component shape data" => "Manipulate allgorithm parameter" => "Face Down" menu. 4
A mean value around 80 for Rohm and Kamaya resistors proved to be useful. 4
If too many vision errors for component shape measurements out of tolerance are displayed, we
recommend to enter the real component measurements into the component shape. In order to do
so, pick up a component in the "Measure component and edit component shape data" => "Test
component" => menu and read out the measured value in component length and component
width in the "Dimension results" option. Repeat this action and compute the mean value. When
you are finished, enter the real component length and component width into the component shape
description. 4
– Causes at the components:
The dimension values for 01005 components are usually specified with a length of 0,4mm and a
width of 0,2mm at a tolerance of +- 20µm. In our experience the condenser dimensions are more
likely to lie in the lower tolerance limits. They are therefore a little smaller than the resistor dimen-
sions. This should be taken into account with the dimensions in the component shape descrip-
tion. 4
Assembly Instructions 01005-Packet
Edition 12/2007
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4.1.2.3 Error: During Placement
In general, a machine accuracy of a minimum of 80µm at 4 sigma is the prerequisite for the place-
ment of the components. You can execute verification via the CM controller or the measuring de-
vice. 4
A further decisive influencing factor on the placement quality is the soldering paste and the pres-
sure. Refer to the SIPLACE 01005 process manual for further information and assistance. 4