Switching between resolver and encoder
Posted: Sat Jul 27, 2019 12:16 pm
I was just asked via email what hardware changes are necessary to run a board, that is populated for resolver mode, in encoder mode instead.
So I went to check, this is for AB quadrature encoders only:
If the encoder has a push-pull output you need to do nothing at all. Leave JP2.2 and JP2.4 unconnected and find power for the encoder somewhere else. If the encoder is open-collector you need to populate R17 and R18.
Set encmode to AB, done.
For ABZ and single channel it's a bit more changes as you will see on the circuit diagram. Since that has become rare I won't discuss it here
So I went to check, this is for AB quadrature encoders only:
If the encoder has a push-pull output you need to do nothing at all. Leave JP2.2 and JP2.4 unconnected and find power for the encoder somewhere else. If the encoder is open-collector you need to populate R17 and R18.
Set encmode to AB, done.
For ABZ and single channel it's a bit more changes as you will see on the circuit diagram. Since that has become rare I won't discuss it here