Acc24E3 & Pbrick with analog feedback (sincos)

[sbrun]

Is it possible to connect on Acc24E3 or Pbrick with sincos option, à second sincos on the pins named "altsin", "altcos" (u,v,w,t pin) ?

 

On some encoders there is 2 sincos signals, one with several period/rt, the second with one périod/rt. I would like to phase the motor with the second sincos connected on altsincos pins.

Is it possible ?

How do that ?

 

Thanks.

[steve.milici]

This feature is available on the ACC-24E3 with the analog mezzanine only - it is not available on the Power Bricks. The setup for these are the same as the primary encoder inputs but the ADCs are at:

Gate3.Chan[j].AdcEnc[2]

Gate3.Chan[j].AdcEnc[3]

[steve.milici]

C O R R E C T I O N :

The Power Bricks do have this feature.

[sbrun]

Thank you Steve, that's wonderful.

 

Could you tell me the best way to get a position from AdcEnc[2] & [3] ?

I suppose it's with EncTable[n].type =4, but could you give me the full configuration ?

 

Thanks

[steve.milici]

I will need to research this a bit to get the exact settings needed - but fundamentally a type 4 entry with the following:

EncTable[n].pEnc = Sys.Udata[x].a // the next 8 consecutive registers must always be zero

// to simulate the Encoder status/phase/servo capture registers

// to keep the quadrature count at zero

EncTable[n].pEnc1 = Gate3.Chan[j].AdcEnc[2].a

EncTable[n].index3 = 3 or 7

EncTable[n].index5 = 1

EncTable[n].ScaleFactor = set to equal the number of counts/rev of the actual commutation encoder

 

And then appropriately set the AbsPhasePos elements to look at this entry.

[sbrun]

Thank you Steve,

I'll test it in some weeks at the customer plant.