00197975-06_UM_TX-Serie_EN - 第149页

User manual SIPLACE TX-Series 3 Technical data and assemblies From software version 713.0 Edition 01/2020 3.7 PCB conveyor syst em 149 3.7.2.4 Synchronous transport mode In synchronous mode, two PCBs of the same size are…

3 Technical data and assemblies User manual SIPLACE TX-Series

3.7 PCB conveyor system From software version 713.0 Edition 01/2020

148

3.7.2.3 Asynchronous transport mode

In asynchronous mode, only one PCB in a transport track is processed. At the same time, another

PCB in the second transport track is moved into the placement position. This saves the full con-

veying time of one PCB, thus considerably increasing performance, particularly for PCBs with a

short cycle time. Once the placement machine has received the job data (panel, setup), the

boards on the input conveyors are continuously transported to the available processing conveyor

(provided that the processing conveyor is free) throughout the placement operation. The place-

ment process begins as soon as a board is transported into the processing area. The PCBs are

processed one after another.

If the placement sequence is interrupted, the conveyor interface will be disabled and the PCBs

currently on the processing belts will be completed.

The conveyor interface is disabled or enabled simultaneously for both transport tracks.

Fig. 3.7 - 3 Transport modes

Synchronous transport mode

Asynchronous transport mode

User manual SIPLACE TX-Series 3 Technical data and assemblies

From software version 713.0 Edition 01/2020 3.7 PCB conveyor system

149

3.7.2.4 Synchronous transport mode

In synchronous mode, two PCBs of the same size are transported into the placement position at

the same time. They are processed as a common panel. When using products with greatly differ-

ing placement content, common optimization increases the performance of the whole content on

both boards.

The time needed to transport the board is reduced as two boards are always transported at the

same time. It also ensures better utilization of the nozzle configuration.

PCBs on conveyor tracks 1 and 2 are moved synchronously onto the conveyor sections (i.e. the

conveyors are controlled synchronously, but independently of one another). The components to

be placed on conveyor tracks 1 and 2 must be organized into a panel via two subpanels.

If only one conveyor lane is occupied at the beginning of placement, this single use of the con-

veyor lane will be identified as "not to be placed".

If the dual conveyor is operated in synchronous mode, the ‘PCB whispering down the line’ option

is deactivated. The "Global bad fiducial" option cannot be used.

3.7.2.5 I-Placement

In addition to synchronous and asynchronous conveyor modes, I-Placement is also available. In

this mode, the two heads work simultaneously and populate a PCB totally independently of one

another. This further increases the output. I-Placement is a prerequisite for placement accuracy

of 15µm for the SIPLACE TX2i micron 15µm.

3.7.3 Controlling and width adjustment

3.7.3.1 Controlling using the Single Functions menu

The online help contains information on controlling the PCB conveyor system and on the Single

Functions menu.

3.7.3.2 Automatic width adjustment

When the command is received, the conveyor belts are set to the desired width. Different widths

are possible for a dual conveyor.

See the Online Help for detailed information about changing the conveyor track width.

3 Technical data and assemblies User manual SIPLACE TX-Series

3.7 PCB conveyor system From software version 713.0 Edition 01/2020

150

3.7.4 IPC-Hermes-9852

IPC-HERMES-9852 is a communication protocol for SMT lines and can replace the IPC SMEMA

interface. This protocol allows you to transfer more information than previously via the IPC

SMEMA interface. This could be, for example:

– Unique board IDs

– Barcodes

– Conveyor speed,

– Board length and width

– Board thickness

– Transport clearance height

All this information can be transmitted along the whole line without interruption. See also the ad-

ministrator manual IPC-HERMES-9852, [item no.: 00198615-xx]