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Post by clyevo on May 15, 2015 2:25:29 GMT
I know the position sensor cable need to be shielded. Doesnt the cable for forward, reverse, analog input, analog output (ground) from the ext card to VFD need to be shielded as well since they also carry analog signal right? How about the the power cable from VFD to motor? And how much minimum AWG do you guys recommend for each type of cable especially the motor cable? I plan to use 1.5kw AC motor.
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Post by tronicgr on May 18, 2015 20:55:47 GMT
I know the position sensor cable need to be shielded. Doesnt the cable for forward, reverse, analog input, analog output (ground) from the ext card to VFD need to be shielded as well since they also carry analog signal right? How about the the power cable from VFD to motor? And how much minimum AWG do you guys recommend for each type of cable especially the motor cable? I plan to use 1.5kw AC motor. I must have missed this post... You don't need to shield the 24v signal wires but yes its a good idea to shield the analog 0-10V signals from the 6DOF ext board to the VFD. You can use same shielded cable as for the sensors. For the motor power wires you could use 18AWG or if the current demands are bigger use 16AWG wire. You can find lots of online calculators or apps for smart phones that can calculate the required AWG for the current that your motors are rated. Some of them even calculate for you the voltage losses in case you decide to lower AWG... Thanos |
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Post by clyevo on May 19, 2015 1:03:55 GMT
Thanks thanos
Ok so so forward and reverse no need shield cable
For the analog 10v input i will connect to the shielded core and the output (ground) i will connect to the braided shield itself (same as using 1 core shielded like coaxial cable)
The motor cable i will use 16 AWG for 1.5kw motor rated 6.25A at 240V, at 10A the voltage drop is only 0.1%
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