Too much current goes klunk!
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@brs said in Too much current goes klunk!:
In the information search along with trial-&-error for setting up my Duet3d converted CreatbotF430 I've learned something(s). Perhaps this will be helpful to the next newbe. That is, too much stepper current seems to make a Klunk sound. I'm not sure why, perhaps someone else can explain it.
So, the F430 uses two motors which are labeled (in my case) ...
42HS63-1504A05-D21 & 42HS48-1304JA05-D24
Technical information was hard to find but this morning I discovered a site that suggested that the current rating is right there in plain sight. Turns out that xxHSxx-1504xxxx and xxHSxx-1304xx means 1.50 amps and 1.30 amps respectively. the xxx4 just means 4 leads. But before finding this informationI discovered, through trial and error, that running the 42HS63-1504 motor at 1.2 amps was too much.
Video at 1.2 amps: (turn up your sound)
42HS63-at-1.2amp.mp4Here is the same test but done at 800ma...
42HS63-at-800ma-.mp4It is also related to these settings:
M566 X900 Y900 Z120 ; max instant speed change (jerk) (mm/min) (defaults 900 900 12) (120 z value from phaedrux) M201 X500 Y500 Z240 ; acceleration (mm/s^2) (defaults 500 500 20) (240 z value from phaedrux)Try restoring the current and experimenting with these settings so you can see how they can contribute.
Frederick
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@fcwilt
I tried tweaking M566 & M201 to no avail. Actually I had increased Y current back to 1200ma and ran my test macro and the klunk didn't happen. Go figure, so perhaps it not the amps after all. However...What got me going down this rabbit path was an effort to tune the Y axis. Any help would sure be appreciated. I've activated stealth tune the best that I can figure. When I run my test macro X axis is silent but Y is not. It gets very noticeable when printing a circle tube. Here are my scrips...
; General preferences M575 P1 S1 B57600 ; enable support for PanelDue G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"F430" ; set printer name ; Network M551 P"F430" ; set password M552 P192.168.0.200 S1 ; enable network and set IP address M553 P255.255.255.0 ; set netmask M554 P192.168.0.1 ; set gateway M586 P0 S1 ; enable HTTP M586 P1 S0 ; disable FTP M586 P2 S0 ; disable Telnet ; Drives M569 P0.1 S0 ; physical drive (X axis) 0.1 goes backwards M569 P0.2 S0 ; physical drive (Y axis) 0.2 goes backwards M569 P0.3 S1 ; physical drive 0.3 goes forwards M569 P0.4 S1 ; physical drive 0.4 goes forwards M584 X0.1 Y0.2 Z0.3 E0.4 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X78.82 Y131.23 Z640.00 E415.00 ; set steps per mm M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous (JERK) speed changes (mm/min) M203 X6000.00 Y6000.00 Z600.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X800 Y1200 Z1200 E650 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X0 Y0 Z0 S1 ; set axis minima M208 X420 Y300 Z290 S0 ; set axis maxima ; Endstops M574 X1 S1 P"io1.in" ; configure microswitch endstop for low end on X via pin io1.in M574 Y1 S1 P"io2.in" ; configure microswitch endstop for low end on Y via pin io2.in M574 Z2 S1 P"io5.in" ; configure microswitch endstop for High end on Z via pin io5.in ;M574 Z2 S2 ; configure Z-probe endstop for high end on Z ; Z-Probe M950 S0 C"io7.out" ; create servo pin 0 for BLTouch M558 P9 C"io7.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X-4 Y75.5 Z3.1 ; set Z probe trigger value, offset and trigger height M557 X5:400 Y76:286 S30 ; define mesh grid ; Heaters M308 S0 P"temp0" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin temp0 M950 H0 C"out3" T0 ; create bed heater output on out3 and map it to sensor 0 M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S160 ; set temperature limit for heater 0 to 160C M308 S1 P"temp1" Y"pt1000" ; configure sensor 1 as PT1000 on pin temp1 M950 H1 C"out1" T1 ; create nozzle heater output on out1 and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S420 ; set temperature limit for heater 1 to 420C M308 S2 P"temp2" Y"thermistor" T100000 B4138 ; configure sensor 2 as thermistor on pin temp2 M950 H2 C"out2" T2 ; create chamber heater output on out2 and map it to sensor 2 M307 H2 B1 S1.00 ; enable bang-bang mode for the chamber heater and set PWM limit M141 H2 ; map chamber to heater 2 M143 H2 S70 ; set temperature limit for heater 2 to 70C ; Fans M950 F0 C"out4" Q3000 ; create fan 0 on pin out4 and set its frequency M106 P0 C"Part Cooler" S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off M950 F1 C"out5" Q4000 ; create fan 1 on pin out5 and set its frequency M106 P1 C"HotEnd" S0 H1 S0.5 T100 ; set fan 1 name and value. Thermostatic control is turned on M950 F2 C"out8" Q500 ; create fan 2 on pin out8 and set its frequency M106 P2 C"onXstepper" S0.15 H-1 ; set fan 2 name and value. Thermostatic control is turned off M950 F3 C"out9" Q500 ; create fan 3 on pin out9 and set its frequency M106 P3 C"Duet-board" S0.1 H-1 ; set fan 3 name and value. Thermostatic control is turned off ; 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 ; Custom settings are not defined ; Miscellaneous M501 ; load saved parameters from non-volatile memory M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss M150 x0 R100 U100 B100 P100 S107 ; set DotStar LEDs (dim white) T0 ; select first tool; homeall.g ; called to home all axes ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Fri Jun 10 2022 15:08:30 GMT-0700 (Pacific Daylight Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 X-425 Y-305 F1800 ; move quickly to X and Y axis endstops and stop there (first pass) G1 H2 X5 Y5 F6000 ; go back a few mm G1 H1 X-425 Y-305 F360 ; move slowly to X and Y axis endstops once more (second pass) G90 ; absolute positioning ;stealthchop tuning AT1 M18 X Y ; disable x and y steppers M569 P0.1 D3 V5 H5 ; enable stealthchop and set tpwmthrs and thigh for X M569 P0.2 D3 V5 H5 ; enable stealthchop and set tpwmthrs and thigh for Y M915 P0.1 T5 ; set tcoolthrs for X [needed if stallguard is not used???] M915 P0.2 T5 ; set tcoolthrs for Y [needed if stallguard is not used???] M17 X Y ; enable x and y steppers [will this enable full run current or idle current???] G4 P150 ; pause for 150ms to satisfy AT1 condition G92 X0 Y0 ; set home positions again after position loss due to M18 G90 ; absolute positioning ;stealthchop tuning AT2 (and goto probe bed-center) G1 X200 Y75 F6000 ; tuning move at "typical speed" that is nearly a straight line... ; ...in order to move both steppers (CoreXY) significantly i.e. >400 full steps @ 60-300RPM ;homing z G1 X209 Y 67.5 G30 ; home Z by probing the bed G91 ; relative positioning G1 Z50 F1000 ; lift Z relative to current position G90 ; absolute positioning -
More learning
More questionsIn regard to the videos in the first post.
-with StealthC off and the Y current reduced to 1100ma, a Y only move does-not create that 'bark' sound when changing directions. Though it 'barks' above 1100ma.
-with StealthC on (current still at 1100ma) a Y only move does create that 'bark' sound.Q: why?
- with StealthC on, a linear move in either X or Y is very quite (except for the Y 'bark').
- still with StealthC on, again, a diagonal move from X to Y is very noisy.
Q: why?
....Five minutes later
I just disabled StealthChop on the Y axis but left it on for the X axis. This works much better! Seems there is an issue with StealthChop and the Y motor.Q: Any Ideas Why?
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@brs
your find there is more friction on the X axis, just turn off the motors and move the X and Y axis by hand.do you have different types of stepper motor on Y and X?
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@moth4017
Yes X an Y are very different. Much less friction on X than Y.X drives just a belt (so 1:1) and the motor is only about an inch tall. Only moves the head.
Y drives the gantry through a step-up pulley (~1.7:1) which drives a shaft to two belts one on each side to the gantry. The motor is about 2.5" (60mm).
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@brs the klunk on the video sound like something
is loose -
@moth4017 said in Too much current goes klunk!:
@brs the klunk on the video sound like something
is looseHa, no not at all - nothing is loose. But yes, kinda sounds like it. It's demonstrably related to Current and StealthChop. No doubt there is much more to it, but it's not physical, at least not the cause. It amazes me how these steppers bing 90% electric/electronic can make such a variety of sounds. Do the sounds come from that 10% mechanical? Makes no sense to me.
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It's usually the sudden acceleration/deceleration that leads to that sound.
I had it on one printer. Changing the acceleration and "jerk" parameters got rid of it with little impact on performance.
Frederick
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@fcwilt said in Too much current goes klunk!:
It's usually the sudden acceleration/deceleration that leads to that sound.
I had it on one printer. Changing the acceleration and "jerk" parameters got rid of it with little impact on performance.
Frederick
Frederick, per your previous post (and my response) I already spent considerable time tweaking M566 & M201. Nothing seemed to make any difference. Thanks though.
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@brs said in Too much current goes klunk!:
Frederick, per your previous post (and my response) I already spent considerable time tweaking M566 & M201. Nothing seemed to make any difference. Thanks though.
It's hard to remember what I have responded to and what I have yet to respond to.
Sorry about that.
It should have been able to silence it completely. I do not understand why it couldn't.
Frederick
