Dynomotion

Group: DynoMotion Message: 3580 From: Dennis Date: 1/30/2012
Subject: Differential encoder contections to KFlop
Confusion has set in and I need a little help!

I have a differential quadrature encoder with the following connections:

Pin A CH A+
Pin B CH B+
Pin C CH A-
Pin D +12 VDC
Pin E CH B-
Pin F GND
Pin G CS/GND

I'm using JP7 for all my axis and encoder hookups.

I notice that, for example, JP7 Pins 7 and 8 are for Axis 0 Encoder Input A and B respectively.

Would I hook the encoder up like this:
Enc Pin C to KFlop Pin 7
Enc Pin E to KFlop Pin 8
Enc Pin D to KFlop Pin 3 (+12 VDC)
Enc Pin F to KFlop Pin 25 (Digital Ground)

Any help would be very appreciated.

Thank You!
Group: DynoMotion Message: 3583 From: Tom Kerekes Date: 1/30/2012
Subject: Re: Differential encoder contections to KFlop
Hi Dennis,
 
The KFLOP inputs are 3.3V inputs that can tolerate +5V.  Most encoders run from a 5V supply.  Yours appears to run from +12V.  Do NOT connect 12V outputs to KFLOP.  Do you have a specification on your encoder?  If not you will need to scope the outputs to see what level they are.  They might need pull up resistors.  You might be able to reduce the voltage with a voltage divider.
 
Regards
TK