Can I connect this switch to the FX3U?

[as1988 1]

Hello everybody!

 

I have a Capacitive switch with the following specifications: https://docs.rs-online.com/cfa1/0900766b81586b27.pdf

I would like to connect that switch to the Mitsubishi FX3U-64M input.

As show on the attached picture, terminal S/S and terminal 24V are shorted, which means that it is a sink input.

 

Question 1: Is my switch NPN or PNP type or it is neither?

Question 2: Can I connect my switch to the sink input without damaging PLC or the switch? If yes, how?

 

 

Thank you so much in advance! 

 

 

[Crossbow 295]

It appears your switch is controlling the - side of the load, so the common terminal should be positive.  This is sinking inputs.

[as1988 1]

17 hours ago, Crossbow said:

It appears your switch is controlling the - side of the load, so the common terminal should be positive.  This is sinking inputs.

Thank you.

 

Let's say we will connect the switch to the input X007.

 

So, just to avoid any misunderstanding, would you connect it like in the attached picture?

 

 

 

 

 

 

Edited 31 Aug 2021 by as1988

[ngxuanhoa 0]

Vout (-) --> NPN switch

Connect as the attached picture is correct

[as1988 1]

Yeah... Not gonna work...

[panic mode 246]

do you have a proper datasheet for the switch or that little document is all there is to it? 

issue is that switch seem to be meant for 5VDC circuit, not for 24VDC.

[pturmel 159]

The document clear states the switch is rated 5 to 30 volts.

I would expect it to work.

[panic mode 246]

i only see contact rating to be 5-30V, 1.5A max (Vout). there is no spec on the sensor portion of the circuitry (Vin).

maybe our definitions of clear are not the same or i am just too picky .

[pturmel 159]

Well, you can't get 30V on the "contact" of this switch without applying 30V to the electronics, as drawn in the datasheet.

[panic mode 246]

no argument there. but this is clearly not the only way device could be wired. i was merely questioning if that is all there is to it since linked datasheet looks incomplete. it is not uncommon for distribution networks (RS, Newark, DigiKey, Mouser etc) to place edited (stripped down) version of datasheet, sometimes just page or two long. this looks like such trimmed down document (hence embedded RS logo for example). 

[Inntele 60]

What is seen from an apparently truncated technical bulletin indicates that the touch button should be installed / connected as follows, namely:
- install the button in the cabinet door through an insulating sleeve and two insulating washers;
- put a GND wire between the nut and the insulating washer, tinned and soldered into a ring, which should be connected to -24V;
- connect the Vin+ wire to + 24V
- connect the signal output wire to the PLC input.
And everything should work ... If it hasn't been damaged early.