Bed heater buzzing at print temp 3.3b2
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What would cause the bed heater to buzz at print temp?
mini5 sbc
3.3b2
slice 50w heater
ht th -
Have you PID tuned the heaters yet?
https://duet3d.dozuki.com/Wiki/Tuning_the_heater_temperature_control
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@Phaedrux said in Bed heater buzzing at print temp 3.3b2:
Have you PID tuned the heaters yet?
https://duet3d.dozuki.com/Wiki/Tuning_the_heater_temperature_control
I did yes, I haven’t considered should I need to do it again after upgrading the fw?
Why would it buzz, magnetic fields from the bed? -
Post your config.g. You can specify the PWM frequency which may help. For beds it should be 10hz. The default may be too high. Post config.g so we can see what it is.
After tuning once you don't have to tune again usually as long as you've saved the results somewhere to reload them. Either in config.g or config-override.g
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@carcamerarig
You can try to set a lower Q parameter in the M950 of the bed heater.
Should look similar to thisM950 H0 C"bedheat" T0 Q10(UTC+1)
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@Phaedrux said in Bed heater buzzing at print temp 3.3b2:
Post your config.g. You can specify the PWM frequency which may help. For beds it should be 10hz. The default may be too high. Post config.g so we can see what it is.
After tuning once you don't have to tune again usually as long as you've saved the results somewhere to reload them. Either in config.g or config-override.g
Yes PWM defaults at 100, I didn't know that, thanks.
Pre change config.g; General preferences G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves M564 H0 ; Permits ALL Axis movement prior to or without ANY Homing require [ over-rides default of no movement until all homed ] ; Network ;M550 P"Duet3" ; Set machine name ;M552 S1 ; Enable network ;*** Access point is configured manually via M587 ;M586 P0 S1 ; Enable HTTP ;M586 P1 S0 ; Disable FTP ;M586 P2 S0 ; Disable Telnet M575 P1 S1 B57600 ; Panel Due ; Drive Mappings M569 P0.0 S0 V0 ; Drive 0 goes forwards: X Axis M569 P0.1 S0 V0 ; Drive 1 goes backwards: Y Axis M569 P0.2 S0 V0 ; Drive 2 goes backwards: Z Axis M569 P0.3 S0 V0 ; Drive 3 goes forwards: E Axis M569 P0.4 S0 V0 ; Drive 4 goes backwards: Z Axis (at E1) ; Micrpstepping and Speed M350 X16 Y16 E16 Z16 I1 ; Configure microstepping with interpolation M92 X200.00 Y200.00 Z400.00 E830.00 ; Set steps per mm ; Speeds, Acceleration and Jerk M566 X240.00 Y240.00 Z24.00 E270.00 P1 ; Set maximum instantaneous speed changes (mm/min) M203 X7200.00 Y7200.00 Z723.00 E1200.00 ; Set maximum speeds (mm/min) M201 X1250.00 Y1250.00 Z1000.00 E500.00 ; Set accelerations (mm/s^2) M204 P1250.0 T1250.0 ; set print and travel accelerations (mm(s^2) ; Motor currents M906 X1500 Y1600 Z600.00 E900.00 I30 ; Set motor currents (mA) and motor idle factor in percent M84 S30 ; Set idle timeout ; Motor remapping for dual Z and axis Limits M584 X0 Y1 Z2:4 E3 ; two Z motors connected to driver outputs Z and E1 M671 X-37:287 Y0:0 S10 ; leadscrews at left (connected to Z) and right (connected to E1) of X axis ; Printer geometry M208 X0:250 Y-4:215 Z-0.5:415 ; X carriage moves from 0 to 250, Y bed goes from 0 to 210 M564 H0 ; allow unhomed movement ; Endstops M915 XY F0 S0 H400 R1 ; configure stall detection for sensorless homing M574 X1 Y1 S3 ; Set endstops controlled by motor load detection ; Stallgaurd Sensitivy M915 X S-40 F0 H400 R0 M915 Y S-40 F0 H400 R0 ;M915 X S-4 F0 H400 R0 ; Set X axis Sensitivity ;working 3.3 ;M915 Y S-2 F0 H400 R0 ; Set y axis Sensitivity ; woring 3.3 ; Input Shaper M593 F60 P4 S0.2 ; Input Shaping ; Z-Probe Super PINDA M574 X1 S3 ; configure sensorless endstop for low end on X M574 Y1 S3 ; configure sensorless endstop for low end on Y M574 Z1 S2 ; Set endstops controlled by probe M558 P5 C"^io3.in" I1 H1 F500 T4800 A30 S0.004 ; PINDA ; Probing Mesh Grid and Sheets M557 X24:221 Y10:195 P8 ; Define mesh grid for probing G31 P1000 X23 Y5 Z1.750 ; Textured Sheet ;G31 P1000 X23 Y5 Z1.280 ; PEI ; Heatbed Heaters and Thermistor Bed M308 S0 P"temp0" Y"thermistor" T100000 B4725 C7.060000e-8 ; Set thermistor + ADC parameters for heater 0 Bed M950 H0 C"out0" T0 Q100 ; Creates Bed Heater M307 H0 R0.329 C411.4 D12.77 S1.00 V23.8 ; Bed PID new version M140 H0 ; Bed uses Heater 0 M143 H0 S120 ; Set temperature limit for heater 0 to 120C Bed ; HotEnd Heaters and Thermistor HotEnd M308 S1 P"temp1" Y"thermistor" T500000 B4723 C1.19622e-7 ;define E0 temperature sensor Slice HT M950 H1 C"out1" T1 ; Create HotEnd Heater M307 H1 R2.416 C188.5:134.7 D5.14 S1.00 V23.9 ; Hotend PID new version M143 H1 S285 ; Set temperature limit for heater 1 to 285C HotEnd M302 S185 R185 ; Fans M950 F1 C"out5" Q250 ; Creates HOTEND Fan M106 P1 T45 S235 H1 ; HOTEND Fan Settings M950 F0 C"out6" Q100 ; Creates PARTS COOLING FAN M106 P0 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off PARTS COOLING FAN ; Tools M563 P0 D0 H1 F0 ; Define tool 0 G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C G91 G1 X1 Y1 Z1 ; calibrate StealthChop values G90 M83 G4 S2 M84 ; disable motors M98 P"0:/macros/02_Functions/StartupFilamentSensorCheck" ; Runout Sensor Logic: Startup with filament = runout sensor active Startup without filament = autoload active -
@DIY-O-Sphere said in Bed heater buzzing at print temp 3.3b2:
@carcamerarig
You can try to set a lower Q parameter in the M950 of the bed heater.
Should look similar to thisM950 H0 C"bedheat" T0 Q10Thanks for that, Q being the PWM frequency?
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@Phaedrux said in Bed heater buzzing at print temp 3.3b2:
@carcamerarig said in Bed heater buzzing at print temp 3.3b2:
Q being the PWM frequency?
Yes.
and it sorted the buzzing many thanks.
