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• Consistently following Lean Equipment Design

Guidelines.

• Smallest footprint of only 2.5 m².

• Ideally suited for up-to-date manufacturing islands.

• High flexibility and productivity:

electro-magnetic soldering unit with miniwave

nozzle or multi-nozzle tool.

• High energy efficiency: only one axis to position

fluxer and soldering unit.

• High production rate: up to five carriers in process

at the same time.

• High precision fluxer system and reproducible

preheat process.

• Patented, automatic ultrasonic cleaning of solder

nozzles ensures a reliable process.

• 100 % process control.

• Efficient programming: online or offline.

• Ready for Industry 4.0 with mcServer.

Lean Production in Perfection:

Productive Cell Manufacturing with SEHO LeanSelect

Electronic productions face new manufacturing challenges

more and more frequently. Besides high quality require-

ments at low production cost, there are also an increasing

number of product variants and flexible reactions to

fluctuation in demand.

The SEHO LeanSelect is particularly designed to meet

these challenges, featuring highest flexibility and outstan-

ding return of invest.

While the entire process is fully automated, loading and

unloading of assemblies is done manually on two separate

conveyors. This allows processing of up to five carriers at

the same time.

The work stations are arranged in a counter-clockwise U-

shape, thus consistently following the Lean Equipment

Design Guidelines. Fluxer and soldering unit are mounted

on a high precision axis system and successively approach

the solder joints, while the assemblies remain in a fixed

position.

The LeanSelect ensures highest productivity at smallest

footprint, with the same uncompromisingly high soldering

quality as the high-end systems from SEHO.

Lean Production - Innovative and Productive

L E A N S E L E C T

Fluxing Process: Highly Precise with Low Consumption

Selective soldering systems from SEHO are equipped with a

micro drop jet fluxer that precisely applies the flux at the

solder joints with minimum wetting width. This ensures

remarkably reduced flux consumption as well as minimal

potential flux residues.

Several drop jet nozzles can be installed at the nozzle head to

allow flux application at multi-row connectors with only one

passage.

The fluxing process is of paramount importance for zero-fault

production processes. Therefore both, the filling level in the

flux container and the function of the drop jet nozzles are

continuously controlled. Highest process reliability is ensured

with the flux quantity monitoring system that monitors the

quantity of flux that is jetted to the printed circuit board in

production.

micro drop jet fluxer: highly precise and minimum consumption

multi-nozzle tool for multiwave soldering processes

100 % Process Control: Absolutely Unique

With selective soldering systems from SEHO you are one

step closer to a zero-fault production: a comprehensive, inno-

vative hardware and software package to control the process

sequence 100 %.

The SEHO cross sensor not only precisely controls the wave

height. In addition, its tool measurement function ensures

correct position of the solder nozzle corresponding to the

loaded program.

Precise positioning of assemblies is ensured with the auto-

matic position correction using fiducial recognition that

automatically compensates various types of misalignment.

The automatic z-height correction recognizes warpage of

assemblies and automatically calculates correct z values for

all points of the soldering program.

The flux quantity monitoring system guarantees flux

deposition with utmost precision, exactly dosed and

permanently monitored during application. In the preheat

area, monitoring of all heating circuits and a touchless

pyrometer control that additionally allows a gradient-

controlled preheat process, ensure reproducible temperature

profiles.

The stability of wave height is controlled just like the solder

level in the solder pot is monitored, and, of course, solder wire

is supplied automatically if needed.

A camera for visual process control provides additional

safety.

With the machine communication software SEHO mcServer

selective soldering processes can be traced completely and

are ready for the requirements of Industry 4.0. This software

feature allows comprehensive control of the soldering

process. mcServer collects, analyzes and archives all

information about the machine and production processes and

prepares it statistically to be presented in a comfortable user

interface.

Using appropriate interfaces, the machine can be integrated

into nearly each specific MES/ERP system for superordinate

control of the process.

Preheat Process: Reproducible and Efficient

The LeanSelect may be equipped with two separately con-

trolled preheat stations.

Highly efficient pulsar or quartz heater cassettes with

pyrometer ensure reproducible and gradient-controlled

temperature profiles. Thus, the entire preheat process can

precisely be controlled which allows optimum activation of the

flux and simultaneously enables adjustment of low tempera-

tures to protect components and PCB material.

In order to consistently keep the assemblies on temperature

during long soldering cycles, a top-side preheating can

additionally be installed above the soldering station.

Soldering Process: Unrivaled Precision and Flexibility

Provided with an electro-magnetic soldering unit, the

LeanSelect guarantees perfect and reproducible soldering

results.

A precisely adjustable solder wave height, the effective

energy transfer as a result of the high temperature stability

and control accuracy directly at the solder nozzle, as well as

the low-maintenance, nearly wear-free, compact design of

the solder pot are just some of the many plus points.

Depending on the application, the LeanSelect can be used for

both, flexible miniwave processes and product-specific

multiwave soldering processes with high throughput.

Quickly exchangeable solder nozzles and multi-nozzle tools

ensure short change-over times.

Automatic Nozzle Cleaning: Innovative and Smart

Soiled solder nozzles remarkably affect the reproducibility of

processes.

A particular highlight of selective soldering systems from

SEHO is the patented ultrasonic cleaning function for nozzles

that ensures maximum machine availability. Besides

significantly longer lifetime of the solder nozzles, this unique

feature provides an absolutely stable soldering process.

gradient-controlled preheat process electro-magnetic soldering unit: miniwave or multiwave soldering processes