Operating Instructions_VF335_en.pdf - 第251页
6|Function description 6.15.2 The [Solder nozzle data table] settings dialog Data table solder nozzle Active nozzle Name nozzle number Description X [mm] Y [mm] Dimension Y [mm] Dimension Z [mm] Offset test... Offset t…
6|Function description
The offset value has also the largest control power portion for the solder pump.
The remaining portion of control power is derived from the product of wave power
and gradient.
The Gradient determines by how much the control power increases with a minimal
change in the Wave power.
Note: For different nozzles, also different gradients must be determined. The result
is that, for different nozzles, there are other control power curves!
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 250/695
6|Function description
6.15.2 The [Solder nozzle data table] settings dialog
Data table solder nozzle
Active nozzle
Name
nozzle number
Description
X [mm]
Y [mm]
Dimension Y [mm]
Dimension Z [mm]
Offset test...
Offset test...
Y [mm]
X [mm]
Test distance [mm]
Gradient
Offset cold
Test tolerance minus
Offset warm
Test tolerance plus
Test offset max.
Fig.66: The settings dialog [Data table solder nozzle]
The Data table solder nozzle is used to manage the solder nozzles required for pro-
duction. You can save and examine the settings for up to 15 different solder
nozzles.
The nozzle table contains the following values:
– [nozzle number]: Sequential numbering of the nozzles.
– [Active nozzle]: If this checkbox is activated, stored settings are used for this
nozzle. You can always activate only one nozzle.
– [Name]: Here you can enter a nozzle name.
– [Description]: Here you can enter a description of the nozzle; it would make
sense, for example, to enter the nozzle inner and outer diameters and the
height.
– [X [mm]] and [Y [mm]]: These values are used to determine the centre of the
nozzle. The values must be entered only for nozzles that have no rotationally
symmetrical shape. [X [mm]] and [Y [mm]] indicate how many millimetres the
centre of the nozzle is away from the centre of the nozzle base in the X/Y direc-
tion.
Transfer direction
Blocker (= zero-point)Board
Conveyor
+Y
+X
29,5
13,5
Tip
– [Dimension Y [mm]]: Here, the outer diameter of the nozzle is indicated in milli-
metres plus an addition of 1 mm. This value is used to calculate the software
limit switch to prevent the nozzle from colliding with the conveyor rail. With
regrd to this, please observe the following illustration. A sample calculation for
a nozzle having an outer diameter of 8 mm: Dimension Y [mm] = Outer dia-
meter [mm] + addition [1 mm] Dimension Y [mm] = 8 + 1 = 9 [mm]
– [Dimension Z [mm]]: Here, the height of the nozzle is specified in millimetres.
– [Offset test X[mm]] and [Offset test Y[mm]]: These values are used to determ-
ine how much the desired test position of the solder wave height test should
deviate from the centre of the nozzle base. Here, an input is only required
when no nozzle is located at the centre of the nozzle base; this is the case, for
example, when a Min-Dip nozzle is used.
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 251/695
6|Function description
Test Abstand Z [mm]
– [Test distance [mm]]: This value indicates how far the test needle lies above
the upper edge of the nozzle during the solder wave height test. It also defines
the height of the solder wave. A value pf about 3 mm is recommended. For
nozzles with an inner diameter below 3 mm, this value should be reduced by
0.5 mm. For nozzles with an inside diameter above 8 mm, this value should be
increased by 0.5 mm.
– [Gradient]: This value determines how much the control power of the pump in-
creases when the wave power (%) is increased by 1%. The larger the Gradient,
the greater the increase in the control power and vice versa. The following fig-
ure illustrates the relationships:
Gradient
Offset
Wave power
30000
Control
Pump
Pump
Control
Soldering nozzle
Soldering nozzle
(B)
(A)
Fig.67: Diagram
– [Offset cold], you will find this button in the start dialog: This value indicates
the control power of the solder pump in cold condition. It is a static value. Off-
set cold is used if the solder pump is started after it has been previously turned
off for a while. After the first successful solder wave height test, the pump has
warmed and Offset warm is used. Offset cold is always under the value of Off-
set warm because the control power required is lower in a cold operating con-
dition. If the solder pot icon is blue, the solder pot is still regarded as cold and
[Offset cold] is used. The number under the icon indicates the currently active
Offset cold. In this case, it is a purely numerical value without unit.
– [Offset warm], you will find this button in the start dialog: This value indicates
the control power of the solder pump in warm condition. It is a dynamic value.
This value is the result of the solder wave height tests. It is determined again
using each new test and automatically transferred to the nozzle table. If the
solder pot icon is red, the solder pot is regarded as warm and the [Offset
warm] is used. The number under the icon indicates the currently active Offset
warm. In this case, it is a purely numerical value without unit.
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 252/695