Author Topic: Sensor Ground  (Read 9205 times)

Offline dlewis

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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

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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 »


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

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

Best regards // Thomas