Posts made by Tommy_Fr

I tested it within several ways, which with bed compensation and it works great.
Thank you to @dc42.

You can mark it as solved.

Hi,

just to say I installed the SSR and now it works.
Thank you to everyone, specially to @dc42.

Can you mark it as solved?

@dc42 Ok. Thank you for your answer. I will buy a SSR. I read the PSU should be very good. What does it mean ? PSU should have a big current capacity ? Mine are a 12V 30A model S-360-12 and a 24V 20.8A model T-500-24 (but lastly will not be used because of incompatibility with components).

@dc42 said in [Problem]Heating bed not working with Duet Wifi 1.04:

What error message is given when the heater fault occurs?

I did not see it.

@dc42 said in [Problem]Heating bed not working with Duet Wifi 1.04:

If it's a 12V heater cartridge then with 24V power it will produce four times its rated power. You should replace it by a 24V cartridge. Also, take care not to apply 24V to any 12V fans in your printer.

It is. I removed the 24V PSU.

A question on SSR. The purpose is just to have a low current moving throught the Duet 2, and so mainly avoiding PCB traces to melt. Because just the heat triggering signal goes throught the board ?

@dc42 I just made your 24V + 12V wiring. Bed heater now works great, but nozzle heater turns on fault a few seconds after it heats. The fact to go with a 24V PSU instead of 12V could make this?

@dc42 said in [Problem]Heating bed not working with Duet Wifi 1.04:

Are you certain that there are no shorted wires? 0.4 ohms resistance for a bed heater is extremely low.

I will watch this ASAP. And I did another resistance testing, it displays 0.8 Ohm as often as 0.7 Ohm, so with substracting 0.3 Ohm from multimeter short (tested again) it is 0.4-0.5 Ohm -> Giving a 24-30A.
I will try with an other multimeter.

@briskspirit No problem.
But is it normal there is now an issue with a 12V power supplying whereas with my previous board (MKS Gen L) the same bed heater worked fine?

@briskspirit said in [Problem]Heating bed not working with Duet Wifi 1.04:

Check resistance of your heated bed. Isn't it overpowered and trying to drain more than 20A?

@tommy_fr said in [Problem]Heating bed not working with Duet Wifi 1.04:

EDIT 2018-12-18: I measure 0.7 Ohm for bed heater resistor, and with substracting 0.3 Ohm from multimeter short, it is 0.4 Ohm. So, if I do not say foolery, current should be 30A...
What should I do to lower current?
Adding an additional resistor?

@dc42 said in [Problem]Heating bed not working with Duet Wifi 1.04:

If VIN is 24V and your bed heater is 12V, that is not the correct wiring. It will apply 24V to the bed heater. I explained the correct wiring in my previous reply.

No, now I set an all 12V configuration. I removed the 24V PSU. It remains only the 12V PSU. The configuration is like this:

And as said previously, the fuse has burnt out.

EDIT 2018-12-18: I measure 0.7 Ohm for bed heater resistor, and with substracting 0.3 Ohm from multimeter short, it is 0.4 Ohm. So, if I do not say foolery, current should be 30A...

What should I do to lower current?
Adding an additional resistor?

@dc42 said in [Problem] Homing Z works with Macro but not with Home Buttons:

So does Z homing work now?

I just tried with g30 and it seems to work now. I will do further tests in the few coming day.

I read we can change it for a 20A on https://duet3d.dozuki.com/Wiki/Hardware_Overview#Section_Duet_2_Wifi
"Note that the board is rated to 18A on the bed heater channel however from version 1.04 forwards they are supplied with a 15A fuse fitted (18A are difficult to source). If you need 18A on the bed heater channel then you need to fit a 20A fuse and take further precautions against over current."

I just tried with a 20A and it burnt out too...

M558 H parameter was H5, I have changed it to 1 to try, and there is no difference.
Yes, I have tested Z as described at https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe.

But I wonder if there is a scale issue, because on DWC I have that for machine control:

It is normal X and Y lines have different values from Z line.
And when I click, for example, on Z+5, nozzle moves five times more longer away than on X+10.
So, is there a scale issue?

UPDATE: I edited my config.g file and changed Z steps per mm which was totally wrong (I set a M5 lead screw system instead of a M8, but value was still incorrect, changing from 4000 to 2560, I finally changed it to 400 which seems to be right or close of the rightful value). Z line on DWC did not change but movement matches more with the first both lines, X and Y.

@dc42 said in [Problem]Heating bed not working with Duet Wifi 1.04:

The 15A fuse is connected between VIN+ and bed heater+, so in this configuration it isn't used. Did you miswire the board earlier to make it fail?
I do not know.

To verify, I just remade the basic connection with a 12V PSU (bed heater directly connected to VIN V_BED and BED- from bed heater board connection).
When I launched heating for the bed, the fuse burnt out... So it seems to do not come from my previous connection.

N.B.: I have a big bed (310x310mm), so I may need a 20A fuse?

UPDATED 2018-12-18: VIN becomes V_BED

Yes, it was what I meant. Sorry if my english was incorrect. The nozzle is moving upwards with increasing positive Z.

Hi,

My 12V heating bed does not work with my Duet Wifi 1.04 but works correctly directly with a 12V PSU (warming felt, sensor matching the warming). I noticed fuse was broken and I changed it. The problem is still there.

My installation is a 24V PSU for general power supplying, and a 12V PSU just for bed heater (neutral connected to the board, line in on 12V PSU), is it correct?
I noticed HeatBed LED is very weakly lightened when heating bed is OFF or STANDBY, and strongly when it is ACTIVE (both not flashing).

There is no fault displayed on Duet Web Interface.

And just another question by the way: Are there several colors for a same LED on the board ?

I noticed what you said @kazolar .

I fixed toward direction for my Z axis to be rightful and easier to understand. It now goes in right direction (forward goes up, with Z increasing).

When I use G30, G30 S-1 or G30 S-2, movement is in the wrong direction (so upward instead of downward); before the toward change for my Z axis it was going downward.
So G30 direction and stop while probe is triggering does not work.

Firmware Electronics: Duet WiFi 1.04 (bought from one of the official Duet suppliers)
Firmware Version: 2.01(RTOS) (2018-07-26b2)
WiFi Server Version: 1.21
Web Interface Version: 1.21.2-dc42

Hi,

Thank you both for your answers.
I replaced homez.g and homeall.g Z probe command G30 with Macro_01 file command G1 S1 Z3200 F9000 (I just deleted Xnnnn Ynnnn). It now works.

@phaedrux said in [Problem] Homing Z works with Macro but not with Home Buttons:

Can you post the contents of your test homing macro?

Here it is:
0_1544630685917_01-Test_IR_PD_Homing.g

Hi,

I use an inductive Z probe sensor (NPN) which seems to work with the specific connection (Z_Probe_In, GND, 12V VIN) as displayed on my web interface (I do not have Panel Due).

When not trigerred, Z probe value is 0. When trigerred, it is 1000 (and is set as the trigerring value).

When I run the macro Test_01 for homing, the Z homing movement is stopped when the probe is close enough with a metal part to trigger itself. So it seems to work fine.

But when I use the home Z command button on web interface (after X and Y homing were done), the movement still goes on when and after the probe is trigerred (trigerring effective on web interface).
It happens too with Home All command button

I read in the macro file a G1 is used (with S1 parameter) for testing, whereas in homez and homeall it is G30 which is used.

0_1544528348045_config.g
I set M558 like that "P5 I1 H5 F500 T2000"
At the end of config.g I added a "M564 H0" to do not have a problem with "not enough homed axis".

For information, I used the configurator from https://configurator.reprapfirmware.org/ to make the files for a cartesian printer.

Here are the homing files I have currently:
1_1544528728527_homeall.g 0_1544528728526_homez.g

I did not touch macro files.

Can you help me?