Quick G540 connection protection question.

[Propaganda]

I want to connect a cooling fan's ground terminal to the e-stop pin of the G540 so when the driver is out of fault (well, at least e-stop in 'ready' position) the cooling fan will be active.

The fan is 12vDC 330ma running off a dedicated PSU with a shared ground with the G540's PSU.

I just want to make sure the e-stop pin is protected in a way this will not harm the electronics.

tyty

[jalessi]

You can purchase a double pole estop switch.

http://tinyurl.com/yfeos8b

[Propaganda]

Good solution. My e-switch is double pole but each pole is C-NC or C-NO. ...Just rechecked the link and it's the same config as mine so in that case the other pole would break the connection when in 'ready' position. Now, I can use a relay to flipflop the connection, unfortunately all my relays are 5v and I don't have the proper power resistor to power them from a 12v source. I guess I can use a automotive relay, they should be only about a few dollars found anywhere really.

But, I perfer the simplest solution at the moment.

Thanks.

[jalessi]

A DPST NC switch is available.

http://www.omron247.com/doc/pdfcatal.nsf/D062665A76A95A96862570C7007DA985/$FILE/D31A1650705.pdf