I NEED ADVICE ON WIRING DRO ENCODER HEAD

[ar15barrels]

another good thing to know.

Thanks buddy

heh, look at this diagram!



That is instructions for a specific driver that happens to support 4 wire and 6 wire encoders.
They just want the un-used inputs tied low in the case where you use a 4 wire encoder.
Obviously, that's not true on all drivers as some 6 wire drivers won't work with a 4 wire encoder, but all 4 wire drivers will work with the correct 4 wires of a 6 wire encoder...

[riftol]

Probe at the wires with a multimeter and see if you find DC voltage across the black and the white/red.
If you do, figure out where those go first.
The TTL wires can be hooked up either way, but will likely only work correctly when hooked up correctly.
You will just get funky DRO readings with the TTL quadrature wires reversed.

The wire that appears to be white/red is soldered to the encoder head; it is not a wire that is among the cable wires.



I did use a meter to determine that there is a reading of 5 volts across the cable's red wire and the cable's black wire.

I need to know which wire on the encoder head is soldered to the cable's red wire and which wire on the encoder head is soldered to the cable's black wire.

I think what follows might be a clue.


I did see that the red/white wire soldered to the encoder head, and the black wire soldered to the encoder head are both soldered to different pins at opposite ends of the encoder head and that the pins are connected to both of the little circuit boards that sandwich the scale between them.

The orange wire and the green wire soldered to the encoder head are not soldered to pins connected to both of the circuit boards.

My guess is that this difference is a clue as to which cable wires are soldered to which encoder head wires.

[ar15barrels]

I did see that the red/white wire soldered to the encoder head, and the black wire soldered to the encoder head are both soldered to different pins at opposite ends of the encoder head and that the pins are connected to both of the little circuit boards that sandwich the scale between them.

The orange wire and the green wire soldered to the encoder head are not soldered to pins connected to both of the circuit boards.

My guess is that this difference is a clue as to which cable wires are soldered to which encoder head wires.

It makes perfect sense that the power would go to both boards and the sgnals would only be on one board.
Now, look at the boards and figure out which of the two pins is ground.
The ground plane will typically be attached to any large un-used area of the boards so check continuity there without any power applied.
Also, most IC's will have ground going into pin1.

[riftol]

Thanks to all for your advice.

Here are pics of the encoder wires and cable wires.

I was told that soldering as follows should be OK:

black cable wire to black encoder wire

red cable wire to white w/ red stripe encoder wire

green cable wire to green encoder wire

blue cable wire to orange encoder wire

Now that you have seen the pics, I welcome any further advice, info etc.

IMG_0761.jpg

^^^

AFAIK, the short orange wire and the short white wire are not connected to the cable's plug.



IMG_0764.JPG