00195193-02 SG D4 FSE en (1) - 第228页

C&P12 Placement Head Z-Axis Down Travel Profiles - Placement Student Guide SIPLACE D4 (FSE) EN 09/2006 C&P12 Placement Head 213 9.4 T ravel Profiles - Placement 9.4.1 Z-Axis Down 9.4.1.1 S t andard Mode - Placeme…

100%1 / 340
C&P12 Placement Head
Travel Profile - Pickup Z-Axis Up
Student Guide SIPLACE D4 (FSE)
C&P12 Placement Head EN 09/2006
212
9.3.2.3 Benefits of the Special Mode "Slow Speed Upwards" and "Creep Speed Standard"
The function change "slow speed" (reduced speed SR/MC 407) offers the following benefits:
Increases the pickup reliability for all nozzle types and for heavy/exotic COs. During the slow start,
the vacuum has the chance to develop its full holding force. An exotic CO and /or a heavy CO will
therefore remain safely on the nozzle!
There is no danger of head contamination for nozzle types with large openings.
However, this option makes the pickup procedure around 20 ms longer than the standard pickup
procedure.
Irrespective of the special modes, the acceleration values in the nozzle handling from SW version
503 onwards can be reduced further if required.
You can also specify the Z-axis down waiting period if you are using special feeder constructions.
The current Siemens feeders do not need this option.
ATTENTION:
The mode "creep speed standard" does not usually provide any additional
benefits (except in the case of pickup from surftape) but does reduce the
placement performance considerably.
C&P12 Placement Head
Z-Axis Down Travel Profiles - Placement
Student Guide SIPLACE D4 (FSE)
EN 09/2006 C&P12 Placement Head
213
9.4 Travel Profiles - Placement
9.4.1 Z-Axis Down
9.4.1.1 Standard Mode - Placement: Z-Axis Down
The placement force is roughly 2.4 N in this
operating mode, with light barrier down on the
C&P12.
End position signal for X/Y and star axes:
All 3 end position signals available
Perform vacuum test "before placement". This
determines whether the CO is at the nozzle.
Z-axis starts:
Positioning of Z-axis downwards
LB up switches:
Electromagnetic valve for air kiss ON
Release signal for function LB down
LB down switches:
End position signal for positioning Z-axis
down;
And valve adjusting drive pickup/placement
position ON for air kiss
C&P12 Placement Head
Travel Profiles - Placement Z-Axis Down
Student Guide SIPLACE D4 (FSE)
C&P12 Placement Head EN 09/2006
214
9.4.1.2 Placing with Increased Placement Force: Z-Axis Down
Benefits of Operating Mode "Increased Placement Force"
With this "higher placement force" function, you can:
Reliably set large components and components with large contact surfaces into the soldering paste/
adhesive!
However, this option makes the placement procedure around 20 ms longer than the standard
placement procedure!
The placement force is 3 -5 N in this operating
mode, with current sensor.
End position signal for X/Y and star axes:
All 3 end position signals available
Perform vacuum test "before placement", to
determine whether the CO is at the nozzle.
Z-axis starts:
Positioning of Z-axis downwards
LB up switches:
Electromagnetic valve for air kiss ON
Release signal for function LB down
LB down switches:
And valve adjusting drive pickup/placement
position ON for air kiss
Current sensor triggers in the servo amplifier:
End position signal for positioning Z-axis
down;