D-serie level 1 EN - 第78页

Reference Run P&P Reference Run Vacuum Check S tuden t Guide Advanced Level 1 SIPLACE D-Series Reference Run EN 05/2007 5-10 5.2.3 V acuum Check  After the CAN bus proces sor for the va cuum/air bla s t generator ha…

Reference Run

Z-Axis Reference Run P&P Reference Run

Student Guide Advanced Level 1 SIPLACE D-Series

EN 05/2007 Reference Run

5-9

5.2 P&P Reference Run

5.2.1 Z-Axis Reference Run

5.2.2 D-Axis Reference Run

5-8: Z-axis reference run

Legend

1. Incremental scale mounted on moveable part

of the Z-Axis

2. Fixed incremental encoder

3. Zero pulse on the incremental scale (only one

for Z-axis)

 Z-axis search for the commutation point of the

linear motors in a special mode. (A 3 phase

motor continues to run at the correct time and

in the correct sequence, when the current is

switched from 1 phase to the next one.)

 Then the Z-axis moves upwards to the zero

pulse and loads the zero point correction.

 The zero point correction, max. and min. travel

range, are determined when you calibrate the

head height.

5-9: D-axis reference run

Legend

1. Incremental glass scale for D-axis

2. Incremental encoder

3. Zero pulse on incremental glass scale

The D-axis (turning axis) then performs a

reference run.

The D-axis moves to the zero pulse of the D-axis

incremental encoder. The zero point correction is

loaded. The D-axis moves to the reference

position, in accordance with the polarity.

Reference run finished! The gantry reference

run (see Section Gantry) follows.

Reference Run

P&P Reference Run Vacuum Check

Student Guide Advanced Level 1 SIPLACE D-Series

Reference Run EN 05/2007

5-10

5.2.3 Vacuum Check

 After the CAN bus processor for the vacuum/air blast generator has booted, this is initialized. This

means that the vacuum/air blast generator is regulated to ensure that neither vacuum or air blast is

generated at the nozzle.

 The gantry axes move the Twin head to the reject position.

 When the head is over the reject container, the vacuum/air blast generator switches over to air blast,

to reject components and check the air blast.

 The vacuum/air blast generator now switches to vacuum and the open vacuum is measured* for both

segments (X and D3 machines, D1: one Twin segment).

 After measurement, the pressure is regulated to 0 bar.

 The vacuum reference run for the Twin head is now finished.

* The closed vacuum value for the Twin segments relates to the calibration value, which is determined

in SITEST.

5.2.4 Height Reference Run

5-10: Measuring the nozzle height

This function checks whether the correct,

programmed nozzle type is used. The nozzle

length is taken to calculate the pick up, centering

and placement height for the following

placements.

Legend

1. Top of fixed conveyor side

2. Z-motor

3. Vacuum - air blast distribution

X The gantry moves the placement heads above

the fixed conveyor side.

X The Z-axis positions module 2 (X/D3 machine)

downwards.

X The travel range of the Z-axis is taken to

calculate the TWIN Head height in relation to

the nozzle type.

X The same procedure is now performed for

module 1.

X The maximum length tolerance is 0.4 mm: If

the length difference is too high an error

message is displayed.

NOTE:

Both modules are measured at the same position of the PCB conveyor!

This TWIN Head reference run is performed parallel to the C&P head reference run in the other

placement area.

Reference Run

Height Reference Run Room for Your Sketches and Notes

Student Guide Advanced Level 1 SIPLACE D-Series

EN 05/2007 Reference Run

5-11

5.3 Room for Your Sketches and Notes