Jump to content
  • 0

Z motor Very Hot


TitusADuxass

Question

Why is my Z motor very hot (even at idle).

This is what I have in the printer.cfg. Is it the high run current (0.8)?

[stepper_z]
step_pin: PC6
dir_pin: PC7
enable_pin: !PA9
microsteps: 16
rotation_distance: 8
endstop_pin: PC3 #probe:z_virtual_endstop #PC3 #^PD2
homing_speed: 5
#position_endstop: 0
position_min: -9
position_max: 200
homing_retract_dist: 20
 
[tmc2209 stepper_z]
uart_pin: PB10 
run_current: 0.800
sense_resistor: 0.110
stealthchop_threshold: 500
 

TIA

TAD

Link to comment
Share on other sites

3 answers to this question

Recommended Posts

  • 0

Looking at both my Trident and V0

On the Trident, my run_current is 0.6 and stealthchop_threshold is 0. I have no sense_resistor set.

On the V0, sense_resistor is the same as yours, but run_current is 0.37.

Perhaps your run_current is too high? How did you arrive at 0.8?

  • Like 1
Link to comment
Share on other sites

  • 0

My run current on the Z-motors on all the Vo's are 0.3 - the recommended for stepper online motors, as in my machines. For LDO motors it would be 0.37

[tmc2209 stepper_z]
uart_pin: PC11
tx_pin: PC10
uart_address: 1
interpolate: False
## For OMC (StepperOnline) 17LS13-0404E-200G 0.4A 
run_current: 0.3
## For LDO-42STH25-1004CL200E 1.0A
#run_current: 0.37
sense_resistor: 0.110
stealthchop_threshold: 0   

Perhaps change your run current

Link to comment
Share on other sites

  • 0
16 hours ago, claudermilk said:

Perhaps your run_current is too high? How did you arrive at 0.8?

It was in the cfg that I downloaded from (probably) the BTT git hub.

I'll drop to the level to 0.35.

Thanks guys.

  • Like 2
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...