Installing a closed loop stepper motor

During fast movements (120mm) I had observed a layer offset on the Y-axis.

I had already installed TMC 2209, which were supposed to prevent this.

So the next step was to install a second Y-motor, which unfortunately wasn't the best solution either.

Then larger motors were installed, with the result that the volume increased considerably despite the TMC drivers.

Now, in the final step, closed loop motors were installed at X and Y.

Result: Perfect!

The motors have immense power and corrode step errors independently.

Despite their power and speed, the motors run incredibly quietly and hardly heat up at all.

I have increased the print speed to 150% on a trial basis, no layer offset!

For assembly:

I purchased my motors online (MKS SERVO42C NEMA17), which were already pre-assembled and calibrated.

They were therefore ready for immediate use.

The installed TMC drivers had to be replaced with the supplied adapter board (note the installation direction!) and the jumpers had to be moved accordingly.

In the next step, my printer had to know that the driver had been replaced,

therefore it is necessary to change the Marlin software for the driver modules X+Y from TMC to A4988 and to compile it.

I immediately used this to switch to the latest Marlin version.

If the printer is already running with the A4988, nothing needs to be changed here ;-)

Then the motors run directly without any changes to the board.

However, the basic requirement is that the drivers are plugged in, i.e. interchangeable!

The closed loop motors are not cheap, but worth the money....

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With fast movements (120mm) I had observed a layer offset on the Y-axis.

Now I already had TMC 2209 installed, which should actually prevent that.

So in the next step a second Y-motor was installed, unfortunately that wasn't the bringer either.

Then larger motors were installed, with the result that the volume increased significantly despite the TMC drivers.

Now in the last step closed loop motors installed at X and Y.

Result: perfect!

The motors have immense power and correct step errors independently.

In addition, despite the power and speed, the motors run incredibly quietly and are hardly heated.

I've tried increasing the print speed to 150%, no layer offset !, there's probably more to do.

For assembly:

I bought my motors online (MKS SERVO42C NEMA17), they were already pre-assembled and calibrated.

So they could be used immediately.

To do this, the built-in TMC drivers had to be replaced with the supplied adapter board (note the installation direction!) and the jumpers had to be moved accordingly.

In the next step, my printer had to know that the driver was replaced,

it is therefore necessary to convert and compile the Marlin software from TMC to A4988 for driver blocks X+Y.

I used it right away to switch to the current Marlin version.

If the printer is already running with the A4988, nothing needs to be changed here ;-)

Then the motors run directly without any changes to the board.

However, the basic requirement is that the drivers are plugged in, i.e. interchangeable!

The closed loop motors are not cheap but worth the money...