So I was looking at buying some Lapp USA Olflex 190CY 22 ga/10 conductor braided shield flexible cabling to use to connect the encoder line drivers on my mill to the Mesa 7i29's I just bought to drive my servos. Finding that new Olflex is pretty expensive ($4+/ft) I found an auction on ebay for some servo cabling, from what I have no idea paid about a hundred bucks for 30+ feet of:
2x Olflex 190CY 24/5pr
2x Olflex 190CY 22/10C
2x Olflex 190CY 16/4C
So now I'm in a dilemma...I bought this because I saw the 22/10C in the auction and thought it would serve my needs well, but now that I have the option of 24/5 pr (twisted pair) I'm wondering if that would be a better choice.
My mill is a Lagun FTV-3, longest run of encoder cable is probably going to be about 7 feet. I've got HEDS 5500 series encoders, 500 CPR, with CUI 103E-10 line drivers. The X/Y/Z/A axis need to connect to a pair of Mesa 7i29 servo drives which are in turn connected to a 5i20 FPGA PCI on a WDM Intel Atom SBC.
My next question is, how should these be wired? If I go the twisted pair route should I have A/A' differentials paired, or A/V+ or A/V-? What should the shield be connected to? Its worth mentioning that not all of my encoders have an index output and the Mesa boards don't necessarily need it, so I have enough wires to pair a power/ground wire with a signal if thats best for signal integrity. Last thought, is there anything to be gained by pairing signal and gnd for A/B/A'/B' and using the last pair for +V or Gnd/+V?
Do I want to connect all of the ground wires together where it terminates on both ends?
On my motors, from a previous project I have some 14 Ga, 2 conductor braided shielded mil-spec wire to connect motors to drives. Am I any better off from a noise standpoint to use the 16/4C in 2 pairs to power my motors or am I better off switching it for the Olflex? I may anyways just so all my cable color matches.
Thanks for the help.
2x Olflex 190CY 24/5pr
2x Olflex 190CY 22/10C
2x Olflex 190CY 16/4C
So now I'm in a dilemma...I bought this because I saw the 22/10C in the auction and thought it would serve my needs well, but now that I have the option of 24/5 pr (twisted pair) I'm wondering if that would be a better choice.
My mill is a Lagun FTV-3, longest run of encoder cable is probably going to be about 7 feet. I've got HEDS 5500 series encoders, 500 CPR, with CUI 103E-10 line drivers. The X/Y/Z/A axis need to connect to a pair of Mesa 7i29 servo drives which are in turn connected to a 5i20 FPGA PCI on a WDM Intel Atom SBC.
My next question is, how should these be wired? If I go the twisted pair route should I have A/A' differentials paired, or A/V+ or A/V-? What should the shield be connected to? Its worth mentioning that not all of my encoders have an index output and the Mesa boards don't necessarily need it, so I have enough wires to pair a power/ground wire with a signal if thats best for signal integrity. Last thought, is there anything to be gained by pairing signal and gnd for A/B/A'/B' and using the last pair for +V or Gnd/+V?
Do I want to connect all of the ground wires together where it terminates on both ends?
On my motors, from a previous project I have some 14 Ga, 2 conductor braided shielded mil-spec wire to connect motors to drives. Am I any better off from a noise standpoint to use the 16/4C in 2 pairs to power my motors or am I better off switching it for the Olflex? I may anyways just so all my cable color matches.
Thanks for the help.