00196044-05 - sg x und x4i fse_en.pdf - 第460页

Modular Conveyor Conveyor Settings Board Clamping Functions S tudent Guide (FSE) SI PL ACE X Series and X4I Modular Conveyor Edition 01/2009 EN 460 1 1.3.7.1 Setting Board Clamping 11-18: Setting the actuator Legend 1. G…

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Modular Conveyor
Light Barrier Functions in Input, Intermediate and Output Conveyors Conveyor Settings
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Modular Conveyor
459
11.3.6 Light Barrier Functions in Input, Intermediate and Output Conveyors
Function:
Recognizing and stopping the PCB boards.
PCB monitoring in the input conveyer, meaning that
if a PCB is recognized in the input conveyer, this PCB will appear on the station GUI and the machine
will close the conveyor interface to the previous station. When using boards with cutouts, the light
barrier signal may extinguish and the interface to the upstream station may be opened although the
board has stopped. Then the next PCB would move into the input conveyer with the PCB still lying
in the input conveyer. The board monitoring function moves the board backwards and then forwards
again, until the light barrier switches.
11.3.7 Board Clamping Functions
Function Description:
The PCB moves into the placement area, it is recognized by the light barrier, stops at the laser and
the lifting table moves up.
Check PCB clamping: The transport motor in the placement area start again. If the PCB is clamped
correctly, the motor current will exceed a defined threshold value. Once the board has been correctly
clamped into place, the placement process will begin.
If this threshold is not reached, the system assumes that the board is on its way to the intermediate
or output conveyor and has therefore not been correctly clamped into place.
The station computer will issue the message "PCB not correctly clamped PA1 (PA2)". The process
can be repeated by pressing the "start button".
The lifting table will move downwards, the board will be transported back and the stopper position
will be approached again.
NOTE:
The check whether a PCB is clamping correctly, is controlled with a motor current check of the
transport motor if the PCB board is clamped (Lifting table up). To check the function you could
put a distance plate under the conveyor side, so that the lifting table can not move to the upper
position.
The check is not performed if the option "Vacuum Tooling" is installed.
Modular Conveyor
Conveyor Settings Board Clamping Functions
Student Guide (FSE) SIPLACE X Series and X4I
Modular Conveyor Edition 01/2009 EN
460
11.3.7.1 Setting Board Clamping
11-18: Setting the actuator
Legend
1. Gauge [00369202-01]
2. Actuator
3. Drilling, for fixing the actuator screws, when
the gauge is fitted
If the conveyor control issues the error
Clamping
error transport
, check the distance from the lifting
table actuator to the top edge of the conveyor belt.
Use the setting gauge to check and set the
actuator. The distance from the clamping actuator
(lifting table) to the top edge of the belt should be
94.0 mm at all four contact points. (see diagram)
Modular Conveyor
Lifting Table Functions Conveyor Settings
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Modular Conveyor
461
11.3.8 Lifting Table Functions
Lifting table up function
Requirements for detecting that the lifting table is up:
30-35 pulses from the incremental disc
Check performed by software (see Section (11.3.7 Board Clamping Functions
J
459 ) )
Dynamic response for board clamping of approx. 500 ms
Lifting table down function
Requirements for detecting that the lifting table is down:
30-35 pulses from the incremental disc
Proximity switch on the lifting table cylinder
Dynamic response for board release of approx. 480 ms
11.3.8.1 Adjusting the Speed of the Lifting Table (from SW701)
11-19: Lifting table unit
Legend
1. Actuator
2. Lock nut damper
3. Fastening screws for mounting block
4. Damping unit
5. 3/5 way solenoid valve mounted on lifting table
drive cylinder
6. Fork-type light barriers / incremental disk
11-20: Time needed to move lifting table up with lifting table plate
X Switch the machine on.
X In the
Conveyor --> Conveyor functions and
manual checks
menu, you can move the
lifting table up and down. The time is shown
directly.
X Select
Actuate Clamp
.