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Nope, Variable Reluctance resolvers require quite a bit more excitation drive, and not all resolver circuits can handle these. Tamagawa is a leading manufacturer of these, but they also make "brushless resolvers" which require MUCH less drive. In the data sheets, they sometimes state the excitation impedance as a complex number, something like 95 + 135j Ohms at some frequency. The higher these numbers, the less drive current the resolver requires. Common brands of brushless resolvers seen on older equipment are Singer-Kearfott and Harowe Controls.
Sin/Cos encoders are not magnetic devices, but often optical linear scales (can also be rotary) where the raw optical signal is brought out, either as a voltage or a current. The reason for this is interpolator boxes can be attached to increase the encoder resolution. Back in the "old days" linear scales often had native resolution of 100 lines per inch or so, so interpolation was required to get proper machine accuracy. Nowadays, high-resolution optical gratings can be made easily, so this stuff is rarely seen today.
Jon

Hi,
seit dem ich die LatheMacros zu Gmoccapi honzugefügt habe, habe ich Probleme mit dem Fenster.
Wenn ich im Vollbild-Modus bin und z.B. in der Werkzeugtabelle bin passt das Bild, sobald ich jedoch in den manuellen Betrieb wechsle, ist das Bild unten abgeschnitten.
Das Fenster lässt dich dann auch nicht mehr so einfach klein schieben.
Hatte wer schonmal so ein ähnliches Problem oder hat eine Idee an was das liegt?

Vielen Dank im voraus

tommylight; I'm using a super cheapo amazon power supply, I will test with a better one when I am able. Do you think such noise could cause the parport to become disabled in linux?

pcw; with the parallel port unplugged from the driver, the exact same issue happens! so i guess it is software or maybe my PCIe parallel port? this is the one I have  www.amazon.com/dp/B01N6MG5TM?ref=ppx_yo2ov_dt_b_fed_asin_title  
 

ok...thanks...I will do on monday...in the meantime check out halshow


Thanks!!

the actual path  of x home (in your hal file) should be:

net x-home-sw <= hm2_7i96s.0.gpio.000.in_not

net x-home-sw => joint.0.home-sw-in

So trace from hm2_7i96s.0.gpio.000.in_not to  x-home-sw to joint.0.home-sw-in
in halshow



 

Much better.
 

Not exactly, but seems very useful

2 x 2watt is correct I believe

Is this resistor better with 0,6w ?

www.reichelt.de/de/de/shop/produkt/wider...207_0_6_w_0_1_-12752

Hi..Thanks for reply...I made change...same result...I made the change under the external input signals...is that right?....if so... I am not familiar with homing variables...anything that could be set wrong to make switch ignored?

Thanks again for your help..

I've done a little research, and have found three types of devices that are sometimes called resolvers:

1. brushless resolvers
2. variable reluctance resolvers
3. sin/cos encoders

It appears that brushless and variable reluctance resolvers are excited and measured the same way and should be indistinguishable by electronic means, whereas sin/cos encoders are driven with DC and produce sin and cosine signals only when the rotor is turning, but static voltages when it is stationary.
 

Hi everyone, I'm new to the forum. I'm Italian and I'm using a translator.
I have a Delta A2 model E servo drive (EtherCAT).
I'd like to use Index Home, but I noticed that the CN1 connector on the drive is missing the OCZ signal output.
Is there another way to do Index Home?
For communication, I use Beckhoff EK1100, EL1859.
Thanks in advance.

I would choose a higher wattage/higher maximum voltage resistor
 

Is it possible to use stall force tolerance for z axis home and detecting the sheet metal in qtplasmac?  I will add a floating head and a z home switch if its not possible.

So at the beginning of the hal file
there is a commented out loadrt for the
abs function and later on an addf line
for that function that fails because
the function was never installed.

I suspect this is a bug in this pncconf
version when certain spindle functions are not
used. It turns out the the abs function
is never used, so simplest fix would be to delete
the addf abs.spindle line in the hal file.

#loadrt abs names=abs.spindle
#loadrt lowpass names=lowpass.spindle

addf hm2_5i25.0.read servo-thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
addf pid.x.do-pid-calcs servo-thread
addf pid.y.do-pid-calcs servo-thread
addf pid.z.do-pid-calcs servo-thread
addf pid.a.do-pid-calcs servo-thread
addf pid.s.do-pid-calcs servo-thread
addf abs.spindle servo-thread
addf lowpass.spindle servo-thread
addf hm2_5i25.0.write servo-thread
setp hm2_5i25.0.dpll.01.timer-us -50
setp hm2_5i25.0.stepgen.timer-number 1

Edit:

Note that the same issue is there with the lowpass function.

I suspect these were added for some some spindle speed display
function, that was not used, and only 1/2 removed from the hal
file boilerplate