pwm controlled waterpump
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@cosmowave said in pwm controlled waterpump:
Has your pump also a pwm control input?
Yes it does.
Essentially I treat it as a thermostatically controlled fan.
Same with the radiator fan.
In my case the radiator fan doesn't ever turn off completely as it has a minimum possible PWM (didn't realise till I got it).EDIT
I should note that the indicated speed is the impeller speed.
If a hose blew, it would still show as running. I need to put a flow sensor on the return near the radiator as well. -
@dc42 said in pwm controlled waterpump:
However, as it draws about 1.7A, you can't power it from the internal 12V supply
Is it possible to power the pump from the bed heater output?
I use a SSR (3-32VDC in) for my bed.
Is it possible to set the bed heater output constantly on, without linking to a temp sensor? -
@cosmowave said in pwm controlled waterpump:
Is it possible to set the bed heater output constantly on, without linking to a temp sensor?
You can invert the pin name with a ! to have it on by default.
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@Phaedrux
oh yes. That's easy!
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@phaedrux said in pwm controlled waterpump:
You can invert the pin name with a ! to have it on by default.
But is it possible to create the (bed) heater, which i'd like to use for powering my water pump (always on), without linking it to a temp sensor?
With M950, the T parameter seems not to be optional...Mankati FSXT+, DeltaTowerV2, E3D MS/TC
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Well you can link it to any temp sensor you like with any temp range you like. So in effect any sensor could allow it to be enabled or disabled.
I suppose you could define it as a GPIO pin to control the water pump with an M42 command instead of as a heater, then it's just on or off.
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@cosmowave
Maybe define it as a spindle? That way you don't need a temp sensor and can set RPM directly. (as percentage of max RPM) -
@o_lampe But is "spindle on/off" M3 / M5 not CNC/laser specific ? Can i use the commands in printer mode?
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@cosmowave said in pwm controlled waterpump:
@o_lampe But is "spindle on/off" M3 / M5 not CNC/laser specific ? Can i use the commands in printer mode?
Why do you need to PWM control this cooling unit? I use similar as @OwenD SSR to switch on the pump. Always ON
M950 F1 C"out6" Q500 ; create fan 1 on pin out6 and set its frequency Hotend Cooling Waterpump M106 P1 S1 -
@tecno I'd like the idea to control the speed of the pump... also for reliability.
