HS50_advance_level 2.pdf - 第372页
S tudent Guide HS-50 Ad vanced II 12 S pecial handlin g for th e Z-axis Edition 0 7/2002 28 3ODFH PHQW LQPR GH6OR ZEUDNLQJZLWKSOD FHPHQ WIRUFH SRZHUP RQLWR UPRGH DQGPRGH6ORZ VW DUW Just…
Student Guide HS-50 Advanced II
Edition 07/2002 12 Special handling for the Z-axis
27
6LJQDOVIURPWRSWRERWWRP Placement force of 5N
Positional deviation: 200 mV 10 ms
Force signal: 5 V 10 ms
Iactual: 5 V 10 ms
Vtarget: 5 V 10 ms
End signal from the oscilloscope memory
Increased positioning time to build up the placing force
Positional deviation that can be measured with the axis firmware on an HS-50/S-25HM when
the power monitor mode is active.
Student Guide HS-50 Advanced II
12 Special handling for the Z-axis Edition 07/2002
28
3ODFHPHQWLQPRGH6ORZEUDNLQJZLWKSODFHPHQWIRUFHSRZHUPRQLWRUPRGH
DQGPRGH6ORZVWDUW
Just like for the light barrier mode, the last 44 digits before reaching the placement height are
traversed at minimum speed when moving down in mode 8 "Slow braking with placement force".
This allows the component to be placed correspondingly slowly in the glue or soldering paste,
even when increased placement forces are applied. When moving up in mode 10 "Slow", any
vacuum remaining between the nozzle and the component is released. Travel is also begun at the
start speed for a 44 digit path. Additionally, the acceleration or deceleration of the axis can be
reduced using the special procedure programmed for the nozzle. You must decide yourself if this
is reasonable or not depending on the application. Disadvantage: The placement operation takes
about 55 ms longer (about 35 ms in mode 8 and about 20 ms in mode 10).
6LJQDOVIURPWRSWRERWWRP Placement force of 3N
Positional deviation: 200 mV 20 ms
Iactual: 5 V 20 ms
Vtarget: 5 V 20 ms
End signal: 5 V 20 ms
The standard speed profile is used for positioning in mode 8 "Slow braking with placement
force".
44 digits before reaching the placement height, the axis moves using Vmin.
Begin at the start speed and accelerate to the normal speed profile after traveling for 44 digits
Student Guide HS-50 Advanced II
Edition 07/2002 12 Special handling for the Z-axis
29
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6LJQDOVIURPWRSWRERWWRP Light barrier mode
Positional deviation: 200 mV 10 ms
Force signal: 5 V 10 ms
Iactual: 5 V 10 ms
Vtarget: 5 V 10 ms
After reaching the circuit board, the lower light barrier is activated (the forced air is immediately
switched on).
The additional wait time starts to count down once this point in time has been reached.
In the placement profile for the Z-axis the axis continues to move about 6 digits after reaching
the placement height when in the light barrier mode to ensure full contact with the component.
About 2 to 3 seconds of system time must be added to the wait time programmed.
An additional wait time can be programmed when bare dies are to be placed in adhesive. In this
case the component will be pressed into the adhesive with the programmed placement force.
Can be combined as desired with all other placement modes.