Duet2 wifi: Motor Driver & Connector heating issue

R006

Hello,

I am using a Duet 2 WiFi with RRF 3.5.2rc1.

My setup includes three Z motors connected to the Z, E1, and E2 connectors, with the X and Y motors connected to their respective axes. The motor current is configured at 1600mA for all motors, while their rated capacity is 2500mA.

;M-curr 
M906 X1600 Y1600 Z1600 E800 I50                      
M84 S30

I have observed that when the axes are at their home positions, the motor connectors heat up significantly, which appears unusual. However, after homing, if I jog the axes, the connectors cool down to a normal temperature. Additionally, there is a fan installed that blows air directly onto the board.

What could be the cause of the connectors heating up?
Occasionally, the drivers also overheat. What might be causing this issue, and how can it be resolved?

Looking forward to your guidance. @dc42 @Phaedrux

Phaedrux

@R006 said in Duet2 wifi: Motor Driver & Connector heating issue:

RRF 3.5.2rc1.

Please update to 3.5.4 and see if the be behaviour continues.
Also please post your config.g and homing files.

R006

@Phaedrux
Homeall.g

G91                                         
G1 H2 Z2 F100                            
G1 H1 X-300 Y-300 F600                   
G1 H2 X5 Y5 F1000                          
G1 H1 X-300 Y-300 F200                   
G1 H2 Z-5 F100
G1 H1 Z304.1 F300                             
G1 H2 Z-2 F100                            
G1 H1 Z304.1 F100
G92 X0 Y0
G90                                        
G92 Z304.1

homex.g

G91             
G1 H2 Z2 F100  
G1 H1 X-300 F600 
G1 H2 X5 F600 
G1 H1 X-300 F200 
G1 H2 Z-2 F100
G92 X0
G90

homey.g

G91             
G1 H2 Z2 F100   
G1 H1 Y-300 F600
G1 H2 Y5 F600 
G1 H1 Y-300 F200 
G1 H2 Z-2 F100
G92 Y0
G90

homez.g

G91              
G1 H2 Z2 F300  
G1 H1 Z304.1 F360 
G1 H2 Z-5 F240
G1 H1 Z304.1 F200
G90
G92 Z304.1

config.g

M552 S1                                                                                          
;M552 S-1
M586 P0 S1                                           
M586 P1 S0                                          
M586 P2 S0                                           

; Drives
M569 P0 S1                                           
M569 P1 S1                                           
M569 P2 S1                                           
M569 P3 S1 
M569 P4 S1 
M569 P5 S1   
M584 X0 Y1 Z2:3:4 E5                                    
M350 X32 Y32 I0                                        
M350 Z16 E16 I1                                      
M92 X160.0 Y160.0 Z2133.33 E932.00  
;change as per machine                   
M566 X720.00 Y720.00 Z300.00 E600.00                       
M203 X8400.00 Y8400.00 Z420.00 E8400.00          
M201 X3000.00 Y3000.00 Z30.00 E250.00                
;M-curr 
M906 X1600 Y1600 Z1600 E800 I50                      
M84 S30                                              

; Axis Limits
M208 X0 Y0 Z0 S1                                     
M208 X300 Y300 Z304.1 S0                               

; filament Sensor                           
M591 D0 P7 C"exp.e3stop" R15:300 L7 E17 S1            

; Endstops
M574 X1 S1 P"xstop"                                 
M574 Y1 S1 P"ystop"                                
M574 Z1 S1 P"zstop+e0_stop+e1_stop"                                 

; Z-Probe
M950 S0 C"exp.heater3"                               
M558 P9 C"^zprobe.in" H5 F120 T6000  
                   
G31 P500 X0 Y0 Z1.038

; Auto level, coordinates as per motor order in M584 
M671 X-17.66:297.34:140.00 Y-5.00:-5.00:327.61 S5.0 F1.2  
; define mesh grid                           
M557 X30:300 Y30:300 S20   
M376 H5                        
		
; End Limits 
M950 J1 C"exp.e4stop"  				   	 
M581 P1 T2 R0 S1                                     			     
M582 T2							     
M581 P-1 T2	                                         				     
M581 P1 T0 R0 S1                                    

;PA
M572 D0 S0.045		                             

; Bed Heater
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138       
M950 H0 C"bedheat" T0                                
M307 H0 B0 S1.00                                     
M140 H0                                             
M143 H0 S105                                         

; Extuder Heater
M308 S1 P"e0temp" Y"pt1000"                          
M950 H1 C"e0heat" T1                                 
M307 H1 B0 S1.00                                      
M143 H1 S320                                         

; cooling Fans
M950 F0 C"fan0" Q500                                 
M106 P0 S0 H-1                                       
M950 F1 C"fan1" Q500                                 
M106 P1 S0 H-1                                       

; Tools
M563 P0 D0 H1 F0                                    
G10 P0 X0 Y0 Z0                                      
G10 P0 R0 S0  
M575 P1 S1 B57600                                   
M501                                                
M911 S21 R22.5 P"M913 X0 Y0 G91 M83 G1 Z5 E-5 F1000"   
M929 S3 P"/macros/SERVICE/log/STPL_DEBUG.txt"