Operating Instructions_VF335_en.pdf - 第247页
6|Function description 6.15 The solder nozzle data table To work with a solder nozzle, you must install and enable it in the [Data table solder nozzle]. In principle, installing a solder nozzle takes place in three ste…
6|Function description
NOTE
To move the DIP solder pot out of the service position, acknowledge the service
message
To be able to move the DIP solder pot out of the service position, acknowledge the
corresponding service message.
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 246/695
6|Function description
6.15 The solder nozzle data table
To work with a solder nozzle, you must install and enable it in the [Data table
solder nozzle].
In principle, installing a solder nozzle takes place in three steps:
– Activating and inserting the nozzle into the solder nozzle data table
– Determining the offset for a wave power of 1%
– Determine gradients and offset for a wave power of 75%.
The exact procedure for installing a solder nozzle is described in Chapter Tutorial:
Installing a new solder nozzle [}255].
6.15.1 The behaviour of the solder wave with different solder nozzles
The behaviour of the solder wave is influenced by the following factors:
– Wave power
– Gradient
– Wave offset
– Test distance [mm] Solder wave height test
– Shape of the solder nozzle.
These factors must be matched to one another in such a way that the solder wave
shows the following behaviour:
Wave power at 1% of the maximum value
4 mm
With a 1% wave power of the maximum value, the solder should be in the middle
of the nozzle, about 4 mm under the upper edge of the top. In a narrow nozzle, the
solder is drawn by capillary action upwards to the sides, while this effect is slighter
in a wide nozzle.
Wave power at 75% of the maximum value
3 mm
In a 75% wave power of the maximum value, the solder wave should lie still on the
nozzle, i.e. make no horizontal or vertical movement. It ideally has a height of
about 3 mm. The height of the solder wave is also determined by the distance of
the test needle from the upper edge of the [Test distance [mm]] solder nozzle.
With narrow nozzles (inner diameter < 3 mm), it may be useful to decrease this
value by 0.5 mm to obtain an optimal solder wave, whereas with nozzles with a
large diameter (inner diameter > 8 mm), it is useful to increase the value by 0, 5
mm.
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 247/695
6|Function description
100% wave power
In a 100% wave power, the solder wave may be noisy, but not tilt to one side. With
small nozzles (up to an outer diameter of about 10 mm), the solder wave forms a
dome. The wave moves horizontally and vertically.
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 248/695