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Inductive Technology in Miniature Format

Compact miniature designs are an integral part of wenglor’s inductive product family – with both standard and increased switching distances. Inductive sensors with increased switching distances impress users with long ranges that enable precise solutions for applications with large mechanical play. The new generation in compact D3 housing or M4 thread format – in stainless steel and with robust PUR cable with a length of 2 m – allows installation in systems with very limited space. Thanks to the PNP and NPN variants, the sensors can be easily integrated into existing systems. The bright LED display serves as a practical adjustment aid and indicates changes in the switching distance to an unsafe working distance during operation by flashing.

Advantages

Small Format, High Performance

  • Increased switching distances of up to 1 mm for simplified and fast installation 
  • Stainless steel V2A and PUR cable for long life in harsh ambient conditions
  • High level of protection against damage due to greater distance to the object
  • Degree of protection IP67 in the large temperature range –25 to +70 °C

Integration in Perfection

  • Flush mounting for high mechanical protection
  • PNP/NPN and NO/NC variants for optimal integration
  • High switching frequency of 3,000 Hz for fast applications
  • Bright LED for easy installation and early maintenance

Application Variety

Presence Check of Nail Pins in Pallet Nail Machines

In the production of wooden pallets, automatic nailing machines are used to join the individual wooden parts. The nail pins are first fed into magazines and then fired into the wood with compressed air. A miniature inductive sensor is used to check whether there is a metal pin in the dispenser unit and whether there is a sufficient supply for the next shot. If the nail is present, it is fired into the wood. If it is not present, the sensor switches off, the machine decelerates and issues a signal for manual intervention. 

End Position Detection of a Gripper in a Crimping Machine

In the electrical industry, wires and cables are stripped fully automatically, pressed with an end piece and cut to the correct length. A miniature inductive sensor is used to first check whether the cable is present or not. Then another sensor checks whether the gripping tool for holding the cable is open or not. If it is closed, the cable is fitted with an end sleeve; if it opens and reaches the end position, the sensor sends the signal for the cable to continue along the production line. If the end position is reached in the next work step, the wire is pressed.

Position Sensing of the Gripper Jaws of a Robot Gripper

In the automotive industry, parts are gripped and moved by robots at high speed. The robots’ grippers have little space, which is why miniature inductive sensors are integrated. These detect whether the grippers are open or closed, ensuring that parts can be correctly gripped and moved. The increased switching distance of the sensor (1 mm) simplifies adjustment and enables flush mounting, so that the gripper and sensor remain protected from damage. 

Conveyor Speed Control of a Drive Shaft

In the packaging industry, pre-packaged products are transported via chain conveyor systems. The drive force is transmitted from a shaft to a chain via a pinion. A miniature inductive sensor checks the rotation speed in close range and in confined spaces through alignment with two holes in the chain wheel and fine adjustment. The holes are detected and a switching signal is output to the control unit. The signal is used to check the speed of the chain conveyor and ensure constant forward drive. 

Product Overview

Precision with Induction

Inductive sensors are unbeatable partners in the contactless detection of metallic objects by electromagnetic induction. Thanks to a wide range of designs and functional principles, various housing materials and high switching distances of up to 50 mm, wenglor’s inductive sensors can quickly and optimally solve a wide range of applications – even in harsh or hygienic industrial environments. The sensors are wear-free, waterproof and resistant to dirt and vibrations.
Product Comparison