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Case Study

Pick-by-Light speeds up manual logistics by over 60 percent

Sioen Industries optimizes intralogistics processes with a Pick- to -Light system based on the Banner PTL110 series and the robust TURCK logic I/O modules TBEN  

IIoT, IO-Link, ARGEE/Field Logic Controller

Quick read

As a specialist in technical textiles and protective clothing, Sioen Apparel develops, produces, and distributes yarns, fabrics, nonwovens, textiles, and clothing for various applications worldwide. To optimize inbound and outbound processes at its distribution center in Mouscron , Belgium, Sioen implemented a powerful warehouse management system in combination with a Pick- to -Light solution based on the PTL110-series IP67 I/O modules TBEN. The use of cascading display modules with optional touch buttons and optical sensors has drastically reduced error rates and significantly accelerated sorting and picking processes .  

Whether firefighters, welders, or tree surgeons – anyone who works in potentially hazardous environments needs high-quality protective clothing that protects against injuries or accidents. The Belgian company Sioen specializes in technical textiles and protective workwear and produces more than three million pieces of protective clothing at 22 locations in 20 countries worldwide. Sioen employs around 5,000 people worldwide and generates sales of around 700 million euro. In Mouscron, the family-owned company operates four production plants and a large shipping and distribution center. There, garments produced worldwide are processed, stored, and picked so that they can be shipped to customers quickly and efficiently.

Until now, inbound and outbound processes were largely manual. After delivery, the pallets were transported to an employee who scanned the boxes individually and placed them on defined pallet positions. The positions were reserved for specific goods – whether they were in stock or not. In this way, four to five employees loaded a truck in around five hours.

In outbound logistics, an employee received a picking list for each customer and went through the warehouse to collect the goods. "This way of working was not efficient" recalls Filiep Vanwymelbeke, Logistics Manager at Sioen Apparel. "That's why we were looking for a system that could handle the challenges of both inbound and outbound logistics." To solve the problem, a powerful warehouse management system (WMS) was implemented in combination with a fail-safe Pick-to-Light solution based on the PTL110 series from TURCK's optical sensor partner Banner Engineering.

"Whereas five employees previously needed up to five hours to process a truck, today three employees can do the same job in two to three hours. That equates to a time saving of up to 15 hours per truck every day."  

Filiep Vanwymelbeke | Logistikleiter | Sioen Apparel

Inbound: Pick-to-Light als Spielmacher 

Beim Wareneingang (Inbound) heben Mitarbeiter die Kartons von den Paletten auf ein Förderband. Ein Scanner erfasst die Etiketten an den Kartons automatisch im Vorbeifahren. Je nach Etikett werden sie dann zu einem von sechs Förderbändern geleitet. Ist das Etikett nicht lesbar, wird der Karton zur manuellen Bearbeitung auf ein dafür vorgesehenes Band befördert. Nachdem ein Mitarbeiter am Ende des Förderbands den angelieferten Karton gescannt hat, signalisiert das WMS über das Pick-to-Light-System sofort, auf welche Palette dieser abgelegt werden muss. Der Mitarbeiter stellt den Karton auf die jeweilige Palette ab und quittiert seine Aktion über den Touch-Button des PTL110-Geräts, der sich über der Palette befindet. Das dreistellige Display der PTL110 zeigt umgehend die Anzahl der Kartons auf der Palette an.  

Das Pick-to-Light-System stellt mehrere Signal­zustände bereit. Ein grünes Signal zeigt an, dass das System einsatzbereit ist, während rot auf einen Bedienfehler hinweist. Außerdem zeigt ein violettes Signal, dass eine gemischte Palette einer Qualitätskontrolle unterzogen werden muss. Ist die Palette vollständig und kann entnommen werden, leuchtet die LED der PTL110 schließlich blau. 

Outbound: zuverlässige Auftragskonsolidierung

Auf dem Ausgangsförderer laufen zwei Warenströme zusammen: Kartons mit einheitlichem Inhalt und Kartons mit einer Mischung unterschiedlicher Waren, die je nach Inhalt in der Höhe variieren. An dieser Stelle wird erneut das Pick-to-Light-System aktiv. Der Mitarbeiter scannt den Karton, woraufhin das WMS, je nach Kunde bzw. Spediteur, die Palette bestimmt, auf die er abgelegt werden soll. Die PTL110 signalisieren mittels einfacher Farbsignale den jeweiligen Standort der Palette. „Mit dieser Arbeitsmethode sind wir sehr zufrieden“, sagt Vanwymelbeke. „Wir denken darüber nach, die Anzahl der PTL110-Geräte im Outbound zu verdoppeln, damit noch mehr Kunden und Spediteure gleichzeitig bedient werden können.“ 

Multiprotocol I/O module ensures operation  

The communication of the PTL110 devices with the WMS is decisive for the optimal operation of the solution. For this purpose, all PTL110 devices are connected via Turck's TBEN-S multiprotocol I/O modules. The robust IP67 modules can be mounted directly on the conveyor line without a control cabinet and are equipped with the web-based field logic controller software ARGEE as standard. ARGEE allows the module to be operated as a small control unit by using standard communication protocols (ModBus register).

Communication with the WMS can be easily configured by using PickIQ. Thus, the ARGEE software establishes a connection between the PTL110 and the WMS without a great deal of programming effort. The customer's IT staff do not need any special knowledge of automation software. PickIQ uses a serial bus protocol that uses a common ID to avoid latency when querying multiple devices. This allows the system to operate without delay even during peak times.

Error rate dropped to zero  

The versatility of the PTL110 devices is evident in their application in both the inbound and outbound systems. The multifunctional displays with touch-button options, optical sensors and three-digit display enable simple and reliable monitoring of the number of boxes on a pallet with clear signal displays. The PTL110 are characterized by their fast reaction time and flexible installation options, which enables easy adaptation and expansion of the system. M12 connectors enable fast and safe installation of multiple devices. In addition, the display offers up to 14 colors, combined with several animation functions to distinguish between different states.

"The error rate in inbound logistics has fallen to practically zero," Vanwymelbeke notes. "Where previously five employees needed up to five hours to process a truck, today three employees can do it in two to three hours. That equates to a time saving of up to 15 hours per truck per day. This allows us to deploy our employees for other tasks."

Customer | www.sioen.com

Hans De Craemer is a marketing manager | Turck Multiprox in Belgium