Mini5 Weak Fan output
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I'm getting very poor fan performance from my part cooling and Heatsink fan on my Mini5 both are wired to 24v on out.5&6. I'd say I'm only getting about half their output when wired to the Mini5 vs direct wired direct to power on the same wires.... What do I need to do to correct this? And yes I'm positive I'm jumpered to VIN and not 12v I also tested with another controller board (running Klipper and they spool up nicely there.) Fighting a heat-creep issue cuz no fan is delivering enough ariflow.... So the fan on out6 is the most critical it hardly moves any air at all when on out6. Short of hard wiring it to the PSU I don't know what to do.
Just using the standard settings... And they aren't fantastic fans just WINSINN's but like I say they work a lot better connected to other things....
; Fans M950 F0 C"out5" Q500 ; create fan 0 on pin out5 and set its frequency M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off M950 F1 C"out6" Q500 ; create fan 1 on pin out6 and set its frequency M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on{edit} Just checked to cover my bases and in getting 24.1 V at the fan. So this makes no sense to me 24v is 24v why are they running slower when attached to the board. They are just dumb 2 wire fans.
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Okay I removed the Q500 and that did the trick... I didn't think that would have any effect since they aren't PWM fans. And Q500 is listed for the default so you'd think that's what would be there even if it was not set but.. Fan is going like blazes now.
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You can verify what values it's using by sending M950 F0 by itself. I can't see why setting Q500 manually wouldn't work if the default value is 500. Perhaps it's not 500 afterall? Or it's getting set elsewhere?
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@phaedrux said in Mini5 Weak Fan output:
M950 F0
7/23/2021, 1:57:34 PM M950 F1 Fan 1 pin out3 frequency 250Hz 7/23/2021, 1:57:21 PM M950 F0 Fan 0 pin out5 frequency 250Hz -
@nurgelrot thats my second Mini5 not the one I was having issues on. (its printing right now and don't want to messit up) They are configured the same except the heatsink is 12v on this one. I'll check when it done printing but sshouldn'tbe different then this one.
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firmware version?
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@phaedrux RepRapFirmware for Duet 3 Mini 5+ version 3.3 (2021-06-15 21:46:11) running on Duet 3 Mini5plus Ethernet (SBC mode)
Both the same
test print just finished on the one having the biggest issues:7/23/2021, 2:10:29 PM M950 F0 Fan 0 pin out5 frequency 250Hz 7/23/2021, 2:10:16 PM M950 F1 Fan 1 pin (out6,laser,vfd) frequency 250Hz -
Thanks. I'll check what the default is supposed to be
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in RRF3 it's 250 for both heaters and fans. I'll have to update the M950 wiki entry.
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@phaedrux The RRF config tool makes them as 500 as well. So that may need to be updated
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Thanks for the heads up on the config tool.
