Application Note for
Die-Mounted Junction Boxes

Some 3rd Party Die-Mounted Junction boxes are NOT compatible with the DSI-2

One of the most innovative features of the DSI 2 is its ability to accept input from either NPN or PNP sensors without having to do any special wiring, programing, or configuration; you just plug in either type, and the DSI-2 can monitor it.

Because of this feature, the DSI 2 is incompatible with any die-mounted junction box equipped with LED indicators, such as the one shown below.

In order for the DSI 2 to have the ability to monitor either NPN or PNP sensors, its inputs look for current flow rather than a specific voltage level. As long as a sensor is actuated, the DSI will detect that it is "On" whether the input voltage level is 0 volts or 24 volts.

If the die-mounted junction box is equipped with LED indicators, these components can cause current to flow through the DSI input even when the corresponding sensor is not actuated, leading to a condition where the inputs appear "locked" on. The easiest way to avoid this condition is to utilize only "plain" junction boxes without indicator lights.

Wintriss offers a complete line of compatible junction boxes, connectivity products, and sensors including proximity and photoelectric sensors, die-mountable junction boxes, cables, and connectors.

If you would like to know if a specific junction box (or other product) is compatible, please contact the Wintriss factory.