M12 connectors for switches!

Microprecision Electronics SA is extending the possibilities of its MP700 series of sealed limit switches in order to facilitate the connection of limit switches as sensing devices to industrial bus systems.

The switches are now available with an M12 connector integrated directly into the housing, thus making for easy and flexible interfacing to a bus interconnect box. This feature allows for a simple and detachable cable connection as an alternative to the common potted cable solution. Standard M12 connection cables are broadly available.

M12This option is implemented for 30mm and 35mm housing sizes which reflects the 20mm “EN” and 25mm “US” mounting style. Metal housing for rugged outdoor applications as well as plastic housing for indoor use are both offering this new feature.

A five-pin version is used in the MP740/60 metallic cases and a four-pin for the MP730/750 plastic cases. All cases are IP67 sealed. The electrical rating is adapted to the power specification of M12 connectors for 4 A up to 120VAC and 3A for 240 VAC.

The MP700 limit switches come with a wide selection of actuator types consisting of pin and roller plungers, roller levers and many others. The electrical switching module is a positive opening circuit with either slow- action or snap-action movements for a broad range of industrial applications. The products fulfil the EN 60947-5-1 standards and are also UL approved.

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Setting up a limit switch.

Thomson Industries has released a new educational video to help design engineers to setup a limit switch correctly with a Thomson linear unit.

Kyle Thompson, Global Product Line Manager, Systems at Thomson, explains in the video, “A limit switch is operated by the motion of a linear unit as part of a control system. Each limit switch sent out with a Thomson linear system comes with a track to match the stroke length of the unit."

Kyle demonstrates how to install the limit switch onto the track in the video. He explains: “The user only needs to slide it into position on any part of the unit and screw it down until secure. This can be adjusted as necessary for where the engineer wants to mount the unit.” The cover strip for each linear unit is provided for aesthetic protection. Each limit switches cables can slide into position on the track. The video itself, "Linear Systems: Limit Switch Setup," and others  may be viewed at the Thomson Tech Tips Videos section of their website.