G320X Err/Res Current

[Bob La Londe]

I don't see it in the I have printed out and inserted in my machine binder so I thought I would ask. How much current can you draw off the ERR/RES pin? I can drop it into the breakout board as a trouble input, but I plan to button up the control cabinet when I am done. It would be nice if I could run a relay and a green LED off the pin, and run a red LED and the trouble input to the breakout board off the relay.

The run of the mill 5V relay seems to take from 15 to 20 mills.

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[morestuff]

This output sources and sinks its current through resistors
inside the G320X and can only supply about 2 mA maximum.
This setup is what allows you to override it with an external
switch. You will need a buffer of some sort to drive a relay,
or even a moderately bright LED.

Regards,
Steve Stallings
www.PMDX.com

[Bob La Londe]

This output sources and sinks its current through resistors
inside the G320X and can only supply about 2 mA maximum.
This setup is what allows you to override it with an external
switch. You will need a buffer of some sort to drive a relay,
or even a moderately bright LED.

Regards,
Steve Stallings
www.PMDX.com

Thanks. I kind of thought that might be the case. Looks like I am back to putting a plexiglass panel and a screen (to complete the Faraday cage) in the cabinet door. LOL.

I had hope to be able to remote mount indicators in my console.

[Bob La Londe]

Thanks. I kind of thought that might be the case. Looks like I am back to putting a plexiglass panel and a screen (to complete the Faraday cage) in the cabinet door. LOL.

I had hope to be able to remote mount indicators in my console.

2 mills is pretty minimal. Is that going to be adequate to operate a logical input for stop on my C23 breakout board? It could be pretty bad if a servo driver goes into fault and the machine keeps going.

Is there a way to determine or indicate the fault source?

I have one axis on this machine that seems to go into fault every time when I first move the machine after powerup, but then seems to work fine afterwards.

[morestuff]

The inputs of your C23 board should work with only 2 milliAmperes
of drive current. The thing that you should take into consideration
is that the ERR/RES pin on the G320X is not isolated. It is referenced
to the motor power supply. In order for it to work with the inputs
on the C23, you will have to connect the External Gnd of the C23
to the negative side of your servo motor power supply. Be sure
that this is compatible with the rest of the wiring of your machine
and sensors.

Regards,
Steve Stallings
www.PMDX.com

[Bob La Londe]

Thanks. I'll think my way through the wiring when I have some time just to make sure, but it has been my plan all along to tie all my shields and power supply grounds to a common ground point, and bond that to earth ground.

[MattTheNoob]

Some folks on this board helped me work up an op-amp circuit so I could tie my err signals into my control. If this is something you are interested in, I can look for the old sketches.

[Bob La Londe]

I thik I have just decided to put a window with a screen mesh in the cabinet door instead. Not as elegant, but... I would like to see your circuit diagrams though.

[MattTheNoob]

sorry for disappearing... here is what I currently have monitoring my servos. in an unrelated project, I learned that 555 timer IC's make good relay drivers. attachments opto1 and opto2 show what I used to drive a relay using the tiny current available from a photointerrupter. should work well for the geckos.