9421 with Rotary Encoder

[cbeckenb]

Hello,

I'm trying to use a rotary encoder (AEDT-9810 Z00) with a 9421 to provide feedback for a stepper motor in LabVIEW. The datasheet for the encoder says that the maximum voltage it can use is 7V. However, the 9421 manual says that the minimum voltage needed for a channel to turn "on" is 11V. I was hoping to use DAQmx for position of the encoder. I also have a USB-6001, but it apparently doesn't support the encoder functions of DAQmx. I'm not quite sure where to start if I can't use the 9421.

Thanks,

Carl

[AvatarAang]

Hi, Carl,

You can look into implementing external circuitry to amplify the voltage. This will require op amps and an external power source. That's probably the easiest method to get your voltage over 11 V.

Here's a pretty good tutorial:

Voltage Amplifier: 4 Steps
http://www.instructables.com/id/Voltage-Amplifier/