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TGW Iberica has chosen sensors and systems from Leuze Electronic to measure, position and transmit data.

The transportation paths of the company’s high-bay stacker cranes are measured and positioned by two AMS 200 laser distance-measuring devices from Leuze Electronic; one is used to control the driving movement and the other to control the lifting movement.

To communicate between the stacker cranes and their base station, data is transmitted optically by Leuze’s DDLS 200 optical data transceivers, which operate with total immunity from the AMS 200 positioned alongside.

The sensors monitoring the positioning of the cargo throughout the warehouse are Leuze’s 46B series optoelectronic sensors.

The AMS200 Absolute Measurement Systems are mounted in X and Y orientations at the same height as the running gear, and are said to provide high accuracy.

They offer several interface options, for example, by internally calculating the absolute position of the high-bay crane and its lifting unit.

The speed of this calculation of position is key in enabling the high-bay crane to travel between locations at speed.

Calibrated positions are reproduced with millimetre precision across an operating range of up to 200m and an absolute accuracy of +/-2mm is achieved.

An additional feature is that the unit can also use the change of position against time to internally calculate velocity.

TGW Ibercia was able to reduce the complexity of mechanical velocity-control mechanisms or buffers by 30 per cent, due to the velocity feature offered on the AMS200.

Traverse paths for the cranes are divided into four different distance sectors, with each sector configured with a separate velocity.

The AMS monitors these parameters autonomously, reporting to control if the calibrated velocity is exceeded.

To ensure maximum system availability, the AMS 200 issues early warning messages, for example when its optics are becoming soiled or the laser diode loses power.

The AMS200s are available with optional integrated heating of the optics, which enable them to reliably work in the deep-freeze zone.

Optical data transmission offers high immunity to interference.

For communication between the stacker cranes and their base station, TGW Iberica used Leuze’s DDLS 200 optical data transceivers.

This system offers the benefit of high-speed data transmission without the wear issues of fixed wiring, plus the guarantee of being practically free from interference.

The DDLS 200 transceivers use invisible infrared light, enabling them to be placed alongside the AMS 200 optical distance-measurement units, which use laser red light to provide total immunity from each other.

The system consists of a pair of devices that communicate bi-directionally, with each device operating as a transmitter and receiver unit using different frequencies.

The benefits of the DDLS 200 systems are their speed, variety of interface options and operating range of up to 500m.

This transparency means that Profibus masters do not need to be configured, saving commissioning time and cost.

The option of internal heating is also available on the DDLS 200 units and was again used by TGW Iberica in the deep-freezing area, to ensure trouble-free operation.

Leuze Electronic

Leuze electronic the ‘sensor people’ are committed to being the supplier of choice by providing the best customer service and products.

Leuze electronic the ‘sensor people’ are committed to being the supplier of choice by providing the best customer service and products.

DETECTIONOptical Sensors: An innovative range from economic standard sensors to feature-rich special solutions.

Barcode, 2D and RFID code readers; Smart cameras and Vision systems; Optical data transmission; Optical positioning.

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Leuze electronic also offer a machine Safety Inspection Service to ensure the correct guarding of machines using any brand of safety light curtains & barriers.

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