Hi all.
I hope this is the right place to post this.
I'm doing a project at the moment that requires the positional measurement of an x and y axis platform. To achieve this I'm using 2 Renco hollow shaft encoders. Data sheet link: http://www.renco.com/fileadmin/files/Productinfo/RHS15Datasheet.pdf
The issue I'm having is with the power supply to these encoders. The national instruments DAQ 6211 that I have doing the counting uses both the A & B channels for each encoder and I have attempted to use the on-board 5 volts power supply to power them both but unfortunately it does not provide enough power for 2 simultaneously. They both work individually just fine.
I since have tried to power 1 from the DAQ 6211 and the other from
another DAQ 6008. This leads to spurious counting from the encoder connected to the separate DAQ 6008 while the other is fine. I even tried to power both of them from a separate USB device with an on-board 5v supply but both encoders give spurious results in this case.
Ultimately it seems the only correct operation is when the encoder is powered directly by the device that is doing the counting, the DAQ 6211 but of course this only allows me use 1 encoder, not 2.
If I use a separate standalone power supply, would it work for my problem??. I'm concerned a separate power supply will give too much current through its signal lines and damage the DAQ 6211.
I understand that this is a national instruments related question but I thought I would post here to see if anyone has any insight. I appreciate any help or insight as this is really stopping me in my tracks at the moment.
Apologies for the long winded post and thanks for reading.
I hope this is the right place to post this.
I'm doing a project at the moment that requires the positional measurement of an x and y axis platform. To achieve this I'm using 2 Renco hollow shaft encoders. Data sheet link: http://www.renco.com/fileadmin/files/Productinfo/RHS15Datasheet.pdf
The issue I'm having is with the power supply to these encoders. The national instruments DAQ 6211 that I have doing the counting uses both the A & B channels for each encoder and I have attempted to use the on-board 5 volts power supply to power them both but unfortunately it does not provide enough power for 2 simultaneously. They both work individually just fine.
I since have tried to power 1 from the DAQ 6211 and the other from
another DAQ 6008. This leads to spurious counting from the encoder connected to the separate DAQ 6008 while the other is fine. I even tried to power both of them from a separate USB device with an on-board 5v supply but both encoders give spurious results in this case.
Ultimately it seems the only correct operation is when the encoder is powered directly by the device that is doing the counting, the DAQ 6211 but of course this only allows me use 1 encoder, not 2.
If I use a separate standalone power supply, would it work for my problem??. I'm concerned a separate power supply will give too much current through its signal lines and damage the DAQ 6211.
I understand that this is a national instruments related question but I thought I would post here to see if anyone has any insight. I appreciate any help or insight as this is really stopping me in my tracks at the moment.
Apologies for the long winded post and thanks for reading.