Dual Error messages

[Trebol]

Hi all.
Without my A axis connected the Fadal starts and CS's fine in XYZ.
With the A axis connected (VH65) I get the following two error messages:

A Axis:
Error 1
Motor Overload

And it will not allow a CS (after pushing Jog to reset, the axis controllers are reset, but the issue continues and will not allow the machine to start).

From the manual, Error 1 is a faulty resolver. Is it possible that the issue is simply a faulty resolver and the motor message is just in sympathy with this (ie. no movement from the motor because the resolver is faulty, so the system thinks the motor is jammed as well, when it is really just a basic relover problem?) or is there something deeper here??

Would like to test the resolver (J1 and J2 1.6-1.7 Vdc) but for whatever reason I don't see a voltage on any axis when I do this (even when just running OK in XYZ only...) and sometimes the axis' will jump when I put the voltmeter across J1 and J2, so I thought I would wait for replies..

Thanks for your thoughts,

Cheers,
Marty.

[alex gitzel]

you need to put the dummy plug in,when you take off the a-axis wire.check in the rear cabinets for it.

[Trebol]

Hi.
Just to be clear:
"Without my A axis connected the Fadal starts and CS's fine in XYZ."
That is with the dummy plug in as per normal XYZ operation.

"With the A axis connected (VH65) I get the following two error messages:"
This is with the dummy plug out and the A axis connected as mentioned.

Thanks, any advice on this combination of faults and whether this could simply be a basic resolver issue (DC machine) would be appreciated.

Kind regards,
Marty.

[Trebol]

Hi Neal.
Just saw your PM. Thanks for getting back to me. Wondering with this combination of messages (and I know this will be hard to estimate) but at a guess what likelyhood is it of being a pure resolver issue?
Thanks again,
Marty.

[iess525]

Hi Marty,

Give me a call at the office and we'll help you out.

-Shelvin
TheFadalParts.com
(818) 678-9456

[Neal]

Marty--
Both of those error messages will come up with a resolver fault. If this is a DC motor take the lowest cable that plugs into the 1010 controller card and measure the voltage on the coaxial connector. It sould read approx 1.8 volts DC. if has no voltage the either the cable is bad, the resolver is bad or no voltage is getting to the resolver.

Neal

[Trebol]

Thanks for the reply Neal.
With regards to voltage testing of the coax (1.8V) into the 1010 board, against what am I measuring the voltage eg. is J1 to J2 or the voltage across the coax to the machine chassis (earth) or something else??
Thanks again.

[Neal]

Measure the bottom coax from outside the plug shell to the center core of the wire.
Neal

[Trebol]

Hi Neal.
Sorry about the delay, I've been away for a few days.
Hoping to ask you what I'm sure will be a silly question...
Attached is a picture of the lower portion of the 1010 cards. To the left the XYZ and to the right the A.
To get a baseline and to make sure I'm doing this right I have been trying to measure the voltage at the lower coax plug on the 1010 card (to check resolver voltage) at either XYZ (which I know are working) before moving to A (whose resolver is in doubt).
I have tested as you suggested, from the core of the lower coax to its jacket, with the cable plugged in, disconnected and testing at the plug, disconnected and testing at the socket (card) end etc...
Seemingly no matter what I do I can't get a reading across an axis that I know is working. Obviously I'm hoping to get this squared away so that I can get a meaningful test done on the A axis to determine whether the A issue is in fact the resolver. The only other thing I can think of is maybe there needs to be a test program running and the axis moving to see a following voltage there whilst measuring??
Could you give me the step by step rundown on this test that you might otherwise save up for dummies because I sure feel like one...
Either that, or my axis' are running fine on zero voltage
Thanks for your help.
Kind regards,
Marty.

[denmar]

..

[Trebol]

Hi.
Just ran the resolver test on the X axis (end of the J1 plug to the end of the J2 plug on the 1010 board while the X axis resolver program is running) and got the voltage at 1.8V. Just as expected for a working resolver and to set the baseline for the test.
Problem is that when I take the dummy plug out and connect the A axis the machine will not start up as it has the constant error on the A axis, therefore I cannot run a resolver program to test the voltage on the A axis.
I did however test the resisitance of the resolver with the A axis disconnected. (All units in ohms)...

_________Manual________Mine
Pair A____70 to 80_______50
Pair B____190 to 220_____136
Pair C____190 to 220_____136

So all I can do is suspect a resolver pending any other thoughts??
Thanks,
Cheers,
Marty.

[Neal]

Siknce the 1.8v is at the bottom connetor at the 1010 controller card indicates that the resolver is ok. Look for motor, controller card or amp issue.

Neal