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General Category => Do-more CPUs and Do-more Designer Software => Topic started by: Garyhlucas on April 10, 2024, 03:45:04 PM

Title: Noise on BRX Analog voltage input
Post by: Garyhlucas on April 10, 2024, 03:45:04 PM

We have Gefrans inclination sensor 0-10vdc output to an analog input on a BRX36.  We are seeing the input bounce around so much that a machine won?t run.  My choice would have been 4-20 ma but I bought the sensor the day AD introduced it. Any way to reduce the noise? Maybe a filter cap, inductor?
System is in Romania!  We made a mistake not using shielded cable because it runs through an energy chain along with wiring for a pair of DC servos.

Title: Re: Noise on BRX Analog voltage input
Post by: BobO on April 10, 2024, 03:51:29 PM

Quote from: Garyhlucas on April 10, 2024, 03:45:04 PM

We have Gefrans inclination sensor 0-10vdc output to an analog input on a BRX36.  We are seeing the input bounce around so much that a machine won?t run.  My choice would have been 4-20 ma but I bought the sensor the day AD introduced it. Any way to reduce the noise? Maybe a filter cap, inductor?
System is in Romania!  We made a mistake not using shielded cable because it runs through an energy chain along with wiring for a pair of DC servos.

For onboard inputs you can use the FILTER instruction. Modules can filter on the module itself.

Title: Re: Noise on BRX Analog voltage input
Post by: Garyhlucas on April 10, 2024, 06:40:38 PM

We use that function all the time. However I wasn?t the programmer on this one so I don?t know and will have to check on that.
Thanks,