RepRapFirmware 2.02RC4 released

[3dmntbighker]

@dc42 said in RepRapFirmware 2.02RC4 released:

@garyd9 said in RepRapFirmware 2.02RC4 released:

"Warning: motor phase A may be disconnected reported by driver(s) 2"

(I thought this was resolved in RC2 or RC3??):

I think it's happening during the very slow Z movements when doing G32 probing, but I can't be sure. I know it happens sometime between issuing G32 and getting the results on the paneldue console page. On this machine, I'm using the manual bed leveling assistant (that tells me how far to turn each of three leveling screws.)

I saw this message once with RC3. I wasn't sure what it meant, but the print had completed.

[garyd9]

@dc42 - an example of what I meant by:

@garyd9 said in RepRapFirmware 2.02RC4 released:

It's difficult to isolate via G32, as the message doesn't appear until the bed.g is completed, so it might be happening in the very first move that G32 performs, it it might be the very last... there's no way to really tell (that I'm aware of.)

As you can see by the message at 0m05, multiple messages are combined into a single entry, so I'm not sure where in the bed leveling assistant that the warning occurs.

[dc42]

What is your Z steps/mm and VIV voltage? It's just occurred to me that if the driver can't maintain the requested current due to the motor inductance being high, motor speed being high, and supply voltage being low, that too would give rise to an open load report.

[fcwilt]

Hi,

I would first fix the heater issues and the power supply issue.

Then see how things go.

Frederick

[garyd9]

@dc42 said in RepRapFirmware 2.02RC4 released:

What is your Z steps/mm and VIV voltage? It's just occurred to me that if the driver can't maintain the requested current due to the motor inductance being high, motor speed being high, and supply voltage being low, that too would give rise to an open load report.

M350 Z16 I1
M92 Z401.0

VIN is 24VDC.

Again, I want to point out that this doesn't seem to cause any harm, and it only seems to happen once in a while: usually the first time I run the leveling assistant after turning on the 24V PSU (via M80.) I can (and often do) run the manual bed leveling assistant 3 or 4 times before printing and it will only happen the first time.

If I run the assistant again before the PSU is powered down, I usually won't see the warning. However, if the PSU powers down (via M81 S1), it will usually happen again once I power it back on, heat up the build plate, and run the assistant again.

[dc42]

After turning on the power with M80, do you have any sort of delay before you run the bed probing command? You mentioned waiting for the heaters - do you always do that?

[garyd9]

@dc42 said in RepRapFirmware 2.02RC4 released:

After turning on the power with M80, do you have any sort of delay before you run the bed probing command? You mentioned waiting for the heaters - do you always do that?

Yes. My procedure is to run a macro (from paneldue) that turns on the 24V PSU via a SSR (and also turns on LEDs attached to one of the always-on fan headers.) I then prep my build surface and begin heating the bed. I don't start the manual leveling assistant after until the build area has reached 65C (PLA) or 90C (PETG/ABS/ePC) and settled.

I also often heat the nozzle I'll be using to a standby temperature while heating the build plate (130C or 160C depending on material.)

All of this is initiated on the PanelDue. For this machine, I rarely use DWC for anything besides remote monitoring.

[dc42]

Thanks. Does the problem only ever happen when it is the first time you have run the motor after VIN power has been restored?

[garyd9]

@dc42 said in RepRapFirmware 2.02RC4 released:

Thanks. Does the problem only ever happen when it is the first time you have run the motor after VIN power has been restored?

I think so. I started paying much closer attention to the warning yesterday after my post (but I've only started 2 prints since then.) I'll certainly keep you informed if it happens other than the first time running the stepper after VIN is restored.

[garyd9]

@garyd9 said in RepRapFirmware 2.02RC4 released:

@dc42 said in RepRapFirmware 2.02RC4 released:

Thanks. Does the problem only ever happen when it is the first time you have run the motor after VIN power has been restored?

I think so. I started paying much closer attention to the warning yesterday after my post (but I've only started 2 prints since then.) I'll certainly keep you informed if it happens other than the first time running the stepper after VIN is restored.

As luck would have it, this evening I had it happen when starting a new print with the printer NOT going into "ATX Off" first. Print ended, I hit the M80 macro (to counter a pending M81 S1), prepped a new plate, heated it up, and got the warning when leveling the build plate.