Topics created by JJJJ

@JJJJ How have you got the bed heater set up? Looking at the 'original' config from my machine, it's:

M307 H0 A119.9 C608.9 D1.4 S1.00 B1

The M307 B1 parameter on the end is for 'bang-bang' control, i.e. it turns on when it's not at temperature, and turns off when it is, so switching frequency is low. 'Bang-bang' control causes wider temperature swings, so usually B0 is used for PWM control of the bed. However, this comes at a much faster switching rate, set by the M950 Q parameter for the heater, which sets the PWM frequency in Hz.

It may be that you had the PWM frequency set too high for the SSR, which has either caused it to fail, or just to stay on. It's difficult to say what PWM frequency would work, as the 'Fotek SSR-100 DD' doesn't seem to be a current product, see https://www.fotek.com.tw/en-gb/product-category/144. The other SSRs in that range state a 'response time' of 1ms (millisecond). This might mean that it can switch at 1000 times a second (1000Hz), but realistically I'd tend to drive it at a much lower rate, eg 10Hz, as we suggest here: https://docs.duet3d.com/en/User_manual/Connecting_hardware/Heaters_bed#configuring-a-bed-heater

We also don't recommend this kind of SSR, see https://docs.duet3d.com/en/User_manual/Connecting_hardware/Heaters_bed#bed-heater-driven-using-a-solid-state-relay

Ian

@JJJJ said in Tractus 3D 1250 - Y-Axis Stopping & Cooling Fan Issue:

And that's very exciting, I hope yours is less of a headache aha!

Picked up yesterday!

f47cd367-c105-42cd-80de-d5f295ef0d25-image.png

PSU is missing (could you post a picture of yours? Ideally any label that's on it, and the plug that plugs into the printer) and someone tried to replace the hot end with what looks like an Ender 3 hot end! Fortunately the original effector is still there, though the original hot end and wiring is lost to the mists of time. I'll post a separate thread on it, and include all the details. It has what looks like the original configuration on the SD card, too.

Edit: I've uploaded the original config files to https://github.com/Duet3D/RRF-machine-config-files/tree/master/Tractus3D T1250/Tractus3D T1250 - RRF 1.19
Note that they are for use with RepRapFirmware 1.19, not RRF 3 or later!

Ian

@JJJJ said in Printer pausing at start of each layer.:

@droftarts Yeah its strange, still got to tweak the settings as im getting a very large seam still, but its not pausing now.

I'm guessing your cura has retract at layer change turned off.

@droftarts Thank you for your reply, that's very helpful I will try changing the speed then.

This is the printer they have at work and when I joined a few other people had already tried to get it working with no luck. When I went to update it I forgot to save the original config, it was on version 1. something. But it wasn't really working then anyway, so my plan was to start again so I did the config from scratch.

I have also struggled to find any information about the printer, so that explains why then.

I've managed to get some prints from it now I rewired the hot end and added a new extruder but it's just the first layer and z offset causing issues now.

I will try the things you have said, thanks again for your help.