2nd stage of Crusader II retrofit

OTCNC

Wow the last time I tried that link it just looped me right back to your post. This time I see your amp board.
See the picture below. My boards are from the stone age and don't have any led's

Jim

Yes I copied the wrong link and edited that.
I see the LED in the middle there on you JPG. One coming out of a black plastic housing?? If the y is not lit up then it's most likely not the problem (assuming it's a fault indicating led) You could also swap the board with another axis to see if it's the board or wiring. How's your wiring inside the conduit going to the motors?
What changed before things stopped working?

OT-CNC

The blocks that look like led's are uuuh plastic blocks with small screw coming out the ends of them. There are no lights that I have ever seen on the cards I have never taken one of the westamp boards out of the servo box though.

And yes, all axis are enabled thru the 801 board with a single relay.

OT-CNC on your machine do you still have the connector from the 801-p6 to the 803-p2 boards connected? I inadvertently started mine the other day with that connection open and the machine started up and enabled as now?

Thanks
Jim

dang how wrong can I be. Yes there is a led (red) on each board next to the three wire connector with the axis letter on it. None of them are lit up and I've never seen one on.
Do see them wink as power is shut off.

Jim

Hey

I've been checking on what is happening to the Y axis and I have found that the DC voltage to the servo motor on Y is 3.6 dcv while the other axis get 60 volts. There is 118 vdc going to the westamp board but only 3.6 volts coming out. What is causing this I don't know.

Also while testing other systems, the limits in linuxcnc are not working. The physical limit switches are working and the wiring from them to the 7i77 appears okay. But when "hal configuration" watch is set on
hm2_5i25.0.7i77.0.0.input-15-no
hm2_5i25.0.7i77.0.0.input-14-not
hm2_5i25.0.7i77.0.0.input-13-not
hm2_5i25.0.7i77.0.0.output-00
the last one output-00 is active when the servos are enabled. However none of the limits, input-xx-no show the physical movement of the switches.

I have placed my multimeter probes on the screws on the terminals on TB5-ground and each of the screws to 13,14,15 and the voltage drops to zero from 24.7 when the switches are depressed?

Below is a picture of the wire connections to the 7i77 TB8. The red wire to the right is the enable lead. The green, blue, and yellow wires are the ones connected to 13,14,15.

I don't know what to think of the problems with the limit switches? I've spent most of my time working on testing the switches and wiring trying to see what is wrong and I can't find it. Hoping once I found the problem with them then Y axis might come easier.

Any Help Appreciated
Jim

Your Y axis not coming on is a separate issue from your limit switches. As configured I believe all your drives should shut off if you hit a limit since they are enabled/disabled via the relay and hm2_5i25.0.7i77.0.0.output-00.
Are you looking at the hal configuration LED state change when you toggle the switches? They should go between yellow/brown for these signals.
hm2_5i25.0.7i77.0.0.input-15-not
hm2_5i25.0.7i77.0.0.input-14-not
hm2_5i25.0.7i77.0.0.input-13-not
Do you see a status change? If not, how's your field 24v input and ground?

Regarding the Y, I would swap an axis to see if the problem follows the card. Y with X (not Z as it may have very different tuning).

OT-CNC

No I don't see any change in the status of the led in the hal configuration when the switches are pressed. But the multimeter shows the voltage change from 24vdc to 0 when its pressed. When checked from the TB2 ground screw to the TB8 13, 14, 15.
24vdc is run to all the switches then individual wires run to the 7i77 TB8 13, 14, 15.
I've been fighting with my self about swapping out the westamp boards to see if the problem stays the same. I am afraid of screwing up the boards but I may have to.

Thanks
Jim

andy

Yes I only have one 7i77 card.
Yes I was watching the "watch tab"
Yes, besides the limit pins I also had the hm2_5i25.0.7i77.0.0.output-00 pin on the watch tab and it changed color as the machine was enabled or shut down. Though it is a output not a input.

Thanks
Jim