Just thinking outside the box, and not actually suggesting this... but what if you took an analog servo drive (like a G320 :-) and put your analog pressure...
21557
WilliamF
feldmanwill
Mar 17, 2011 1:05 pm
It seems that vacuum switch is what I'm going with. Looks like a quick and easy way to prove out a concept before going with controllers etc. (even though it...
21558
Dan Mauch
danmauch
Mar 17, 2011 1:54 pm
As Mariss said the servo amp can't cause a hot motor when stopped. I have a lot of practical experience with servos. Here is what I would do. Disconnect the...
21559
william_mcbride_sr
william_mcbr...
Mar 17, 2011 7:44 pm
I can't argue the point. this is what gecko told me. the axis all move freely and with not issues. if you move that axis the motor temp drops to room temp. I...
21560
mwalston1
Mar 18, 2011 2:41 am
I was getting a fault on one of my new 320X's, and I traced it back to the current limit pot being maxed out. The motors I'm using are good form more than 20...
21561
william_mcbride_sr
william_mcbr...
Mar 19, 2011 7:24 pm
I did this. and it fixed the problem. I left the machine on for 2 hrs and wasn't running anything. it seems to have fixed the problem. Thank you guys...
21562
bc_axyz
Mar 22, 2011 4:46 am
Hi, How do I know if I have cooked a g201? Motor won't turn, no sound, nothing If its gone it went very quietly....
21563
Michael Jones
michaelgjone...
Mar 27, 2011 1:16 am
I am attempting to control my spindle speed with the G540's VFD (I believe it's a rev 4) input to the P1, P2 and P3 positions on a KBIC speed controller. I've...
21564
dbworth@...
dbworth...
Mar 27, 2011 8:47 am
Hi all, I have a very fussy Geckodrive G320X rev11 that won't trigger. I've emailed Geckodrive but I guess they ignore you when their product doesn't work....
21565
Stephen Wille Padnos
swpadnos
Mar 27, 2011 1:17 pm
... Did you ever try using this config file to start with? <http://wiki.linuxcnc.org/uploads/G540.stepconf>; ... Did you connect all three wires of the G540...
21566
Marty Swartz
mac_marty_15221
Mar 27, 2011 2:48 pm
Hi, Dave. Your "guess" about Geckodrive support is incorrect. They are widely acclaimed as outstanding, but they don't have a huge support staff sitting at the...
21567
Michael Jones
michaelgjone...
Mar 27, 2011 7:22 pm
... Yes... it didn't change things.. and if I remember correctly, it created a conflict when I added the spindle on-off out through the relay. I'm curious...
21568
Michael Jones
michaelgjone...
Mar 27, 2011 8:35 pm
... Solved.. Thanks for the input.. I had followed the instructions on-line.. but the instructions online are backwards.. Ground and +10 were reversed....
21569
teqdruid
Mar 28, 2011 7:41 pm
I'm putting together a box with some gecko drivers, the 201 and 250 in particular. The power is being supplied to the drivers from an external AC/DC supply...
21570
frxdy@...
Frxdy
Mar 28, 2011 8:06 pm
In a message dated 3/28/2011 3:41:34 P.M. Eastern Daylight Time, me@... writes: The problem here is that the drive manuals say that the DC supply ...
21571
Andy Wander
andywander
Mar 28, 2011 8:09 pm
He's talking about switching the DC side of the supply, as that is what will be plugged in to the controller box.
Andy Wander, CTS, TCE I / TCE II
Vice...
21572
curtisleo@...
littleduckie001
Mar 28, 2011 8:11 pm
If I was reading the docs correctly, you cannot switch between the Servo/Stepper and Gecko. You can switch the power between the Gecko and Power Supply. Many...
21573
Andy Wander
andywander
Mar 28, 2011 8:15 pm
The G201 manual clearly states:
CAUTION! Never put a switch on the DC side of the power supply! This will damage, if not destroy, your drive!
I am not sure...
21574
Dr Mark Vaughan
dr_mark_vaughan
Mar 28, 2011 8:34 pm
It's because the drive needs to dump energy returned from the motor in the third quadrant back to the supply, and it relies on the supply quenching that...
21575
Andy Wander
andywander
Mar 28, 2011 9:47 pm
But Mark, that only applies if the motors are moving, correct? I though that if the motors were still, you could disconnect the DC from the drives.
Andy
....
21576
mariss92705
Mar 28, 2011 10:40 pm
Sorry about the missed communication; this is the first time it has come to my attention. Go to the "Files" section of this group and find: G320X STP_DIR...
21577
mariss92705
Mar 28, 2011 10:55 pm
The reason for not switching DC power to turn the drive on or off is very simple. The drive has 100uF to 200uF of power supply bypass capacitance. The inrush...
21578
Andy Wander
andywander
Mar 29, 2011 12:17 am
Thanks, Mariss..:)
Andy Wander
-----Original Message-----
From: geckodrive@yahoogroups.com [mailto:geckodrive@yahoogroups.com] On Behalf Of mariss92705...
21579
mariss92705
Mar 29, 2011 1:13 am
David, I looked into why your email didn't get through. Your email was automatically flagged as spam and was rejected as being potentially dangerous because it...
21580
Jon Elson
jmelson2
Mar 29, 2011 1:26 am
... All Gecko drives have a modest electrolytic capacitor on the DC supply terminals in the drive. If you have a DC power supply with a substantial filter...
21581
Jon Elson
jmelson2
Mar 29, 2011 1:33 am
... Well, in theory, yes. As I said before, the REAL mess would be on making the connection with the power supply charged. That will lead to a LOUD snap and...
21582
cbreitz5223
Mar 29, 2011 10:16 am
Hello All, I have recently completed a R&P machine using a G540. I am now pondering a rotary axis and do not quite understand how I would go about adding a 5th...
21583
frxdy@...
Frxdy
Mar 29, 2011 1:22 pm
In a message dated 3/28/2011 8:17:31 P.M. Eastern Daylight Time, awander@... writes: If you have to switch the DC side, use an inrush current limiting...
21584
Remco Hosman
rhalflex
Mar 29, 2011 1:48 pm
Fuse is a bad idea. It's the same thing as having a switch in that place. Remco Hosman ________________________________ Van: geckodrive@yahoogroups.com...
21585
mariss92705
Mar 29, 2011 1:56 pm
It's not really necessary when you switch the AC side of the power supply. The DC voltage comes up in 10's of milliseconds instead of a millionth of a second....
