7i92 and G540 combination?

More
29 Jul 2023 01:14 #276502 by PCW
Replied by PCW on topic 7i92 and G540 combination?
So you have no fault light on the G540?
Do the motors have holding torque?

Please Log in or Create an account to join the conversation.

More
29 Jul 2023 04:46 #276512 by P.J.B.C
Replied by P.J.B.C on topic 7i92 and G540 combination?
No, as i have said they still just spin freely...

Please Log in or Create an account to join the conversation.

More
29 Jul 2023 13:42 #276524 by PCW
Replied by PCW on topic 7i92 and G540 combination?
Did you try disabling the G540's chargepump? (it has a switch for this)

Please Log in or Create an account to join the conversation.

More
02 Aug 2023 00:32 #276748 by P.J.B.C
Replied by P.J.B.C on topic 7i92 and G540 combination?
yes, I have... I gave it one more go but no luck...

Please Log in or Create an account to join the conversation.

More
02 Aug 2023 00:54 - 02 Aug 2023 00:54 #276750 by PCW
Replied by PCW on topic 7i92 and G540 combination?
OK so if you have the G540 chargepump disabled and the G540 estop input is defeated,
this is a hardware issue with the G540 (no signal from the 7I92 can affect this)

Do you have the current setting resistors installed in the G540 stepper connectors?
Last edit: 02 Aug 2023 00:54 by PCW.

Please Log in or Create an account to join the conversation.

More
02 Aug 2023 09:32 #276769 by P.J.B.C
Replied by P.J.B.C on topic 7i92 and G540 combination?
Yeah it is funny, like the g540 has an odd logic circuit that is somehow incompatible with the mesa hardware...
That is why i made this thread... i still require any information from others as to if they have had success or not.

As for myself, i am dying to get my project back on the road and need to pursue my back up plan,
which involves the use of the parallel ports on my old motherboard...

I bought a couple of PCI-e adapter cards which claim to be a mcs9901 chip...
do you mind helping me with the driver installation...

Please Log in or Create an account to join the conversation.

More
02 Aug 2023 11:12 #276772 by tommylight
Disconnect the DB25 cable from G540, power on G540 with charge pump set to OFF, put it out of E-stop, motors should lock, test by hand if they can be rotated.
If they do not lock, no Mesa or config will help as that is a G540 issue.

Please Log in or Create an account to join the conversation.

More
03 Aug 2023 02:28 - 03 Aug 2023 02:31 #276813 by P.J.B.C
Replied by P.J.B.C on topic 7i92 and G540 combination?
OK... You got it... there were still free wheeling...
It must have been that i suffered the drives at some point, and i replaced the motherboard only...
they passed visual inspection only...
Last edit: 03 Aug 2023 02:31 by P.J.B.C.

Please Log in or Create an account to join the conversation.

More
03 Aug 2023 10:44 #276831 by tommylight
Does G540 still use 4 of G251 drives? Small boards with 8 mosfets on the back?
There should be a manual for it and wiring diagram so can be checked individually out of the board, just find a flat hard drive or flopy cable. Also check the pin to wire numbering for those cables.

Please Log in or Create an account to join the conversation.

More
05 Aug 2023 04:47 #276969 by P.J.B.C
Replied by P.J.B.C on topic 7i92 and G540 combination?
I've just ordered a single replacement drive and i'll plug it in alone, see if that does it...
But I am not sure anything is wrong with any of the electronics...

Please Log in or Create an account to join the conversation.

Time to create page: 0.112 seconds
Powered by Kunena Forum