Author Topic: Sensor Ground  (Read 11565 times)

Offline dlewis

  • PLUS+1 Guru
  • *****
  • Posts: 109
  • Karma: +2/-0
    • Getman Corporation
Sensor Ground
« on: November 23, 2010, 07:29:05 PM »
On the different controllers is Pin1 (Power Ground) common with Pin 9 (Sensor Ground)?  I ask this question because we use a temperature sensor that grounds through the chassis and therefore the ground returns to Pin 1.  I use a wide range of controllers from the MC024 through the MC088.

Offline turboshad

  • PLUS+1 Developer
  • ***
  • Posts: 14
  • Karma: +3/-0
Re: Sensor Ground
« Reply #1 on: November 24, 2010, 05:32:06 PM »
I don't want to say this for fact since my memory is usually pretty bad, but I think the sensor ground floats just a bit. This way they can keep a true regulated 5V differential between the sensor ground and sensor power. If it were tied directly to the MC050 chassis ground pin then there would be no need for it.
« Last Edit: December 02, 2010, 11:51:51 AM by Thomas »

Thomas

  • Guest
Re: Sensor Ground
« Reply #2 on: December 02, 2010, 02:44:01 PM »
Hi!

The grounds are internally shorted together, there is not a difference electrically.

Best regards // Thomas