SIPLACE D4-D4i 工程师手册_EN.pdf - 第233页

Settings 6.5.7 Function "Constant Transpor t Time in Placement Area" Conveyor Service Manual SIPLACE D4/D4i 233 6.5.7 6 . 5 . 7 F u n c t io n " C o n s t a n t T r a n s p o r t T im e in P la c e m e n t…

Settings

Conveyor 6.5.6 Setting the Laser Light Barrier for the Stopper Position

232 Service Manual SIPLACE D4/D4i

Procedure

► Set the maximum conveyor width.

► Choose General functions --> Cycle mode --> Safety mode switch on.

► Activate the relevant laser diode using the input/output functions in SITEST.

► Check the path of the laser beam by covering the front edge of a board with a white label and moving

it into the placement area.

► With the help of the three setting screws, adjust the laser beam to the center of the receiver.

► Check the PCB reference corner and reteach, if necessary.

Laser light barrier

Legend

1. Laser receiver

2. Laser diode

3. Setting screws (3x)

Focussing the laser beam

Legend

1. Paper

2. Visible laser beam

3. Board parallel to laser beam

NOTICE

When you move the paper, the beam must follow along the edge of the PCB as accurately as

possible, with minimal deflection to the left and right.

Settings

6.5.7 Function "Constant Transport Time in Placement Area" Conveyor

Service Manual SIPLACE D4/D4i 233

6.5.7

6.5.7 Function "Constant Transport Time in Placement Area"

Function "Constant Transport Time in Placement Area"

Diagrams of PCB braking

The automatic teaching at the beginning of the travel profile guarantees that the stopper is always

reached in the same time, irrespective of the board weight. The transport time remains the same.

Function:

▪ Switching on the laser light barrier

▪ Starting the board braking procedure.

The light barrier in the placement area is used to recognize the board and then start the braking proce-

dure (travel profile) via the conveyor control software. The software automatically "teaches" the first

board how to move in slow approach mode. Once the travel profile for braking the PCB has begun (on

time), the PCB will be reliably stopped at the laser light barrier, after a maximum of 100ms.

6.5.8

6.5.8 Light Barrier Functions in Input, Intermediate and Output Conveyors

Light Barrier Functions in Input, Intermediate and Output Conveyors

▪ Recognizing and stopping the PCB boards.

▪ Monitoring the boards in the input conveyor i.e.

If a board is recognized in the input conveyor, it will appear on the operating interface and the ma-

chine will lock the conveyor interface to the previous station. When using boards with outbreaks, the

board may stop although the signal of the light barrier is disabled and the interface to the previous

Settings

Conveyor 6.5.9 Setting the Clamping Actuator

234 Service Manual SIPLACE D4/D4i

station is opened again. 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

transports it forwards again, until the light barrier switches.

6.5.9

6.5.9 Setting the Clamping Actuator

Setting the Clamping Actuator

6.5.10

6.5.10 Board Clamping Functions

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 rise up and reach 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.

Legend

1. Actuator

2. Top edge of conveyor belt

► Set the distance between the actuator and the top

edge of the conveyor belt to 94 mm.

NOTICE! The distance between the clamping

actuator (lifting table) and the top edge of the belt must

be checked at all four contact points.

NOTICE

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 edge, so that the lifting table can not move to the

upper position.

The check is not performed if the option "Vacuum Tooling" is installed.