I am hooking up a PwnCNC spindle on a OneFinity Elite Foreman. I am using a PwnCNC IOT switch to control my shop vac. What do I plug the pump pump into?
My wiring / plumbing diagram is below
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There’s 2 normally off ports so you could use the other one, or i use the always on port
Maybe our friends at PWNCNC can weigh in on this. I have been wrestling with the same question on a water cooled 2.2kw only I am using the CW3000. On/off with the spindle is not really the right answer which is what seems to be available several ways The tech notes from PWNCNC tell you to warm up the spindle prior to heavy load to allow lubricants to move around and soften. Pretty usual. If you start the water cooler immediately, you do not get that warm up. Typically you would have a temperature sensor, even a thermistor works, (a thermocouple or RTD is preferred), that is embedded in the body to allow for monitoring and cooling control. The PWN CNC spindle does not appear to have embedded temp sensors, which really surprised me. What does PWNCNC recommend for time to intiate/stop cooling? I live in Florida so it likely would not matter for me anytime and on/off is good enough, but for environments that are cold part of this year this could be a problem. The engineer in me would like to see a temp sensor. I would have paid another $25 to $50 to get it, (likely more). As it is I am working on an external temp sensor on the body to meet the need but it is project/task #27+ on the list. PWNCNC?
@BKurk Thank you for the idea about a temperature sensor. I live in Canada where winters are 0F and summers are 100F. I have a temperature sensor which turns 110V AC on and off that I was using to control fans on my old wood stove (Inkbird ITC-308 1200W Temperature Controller with Heating Cooling Power Socket on Amazon). I am going to try taping the sensor to the spindle motor.
Not so much a temperature sensor but i have a fish tank thermometer in my bucket. With a chiller that’s less of an issue, but the chiller has one. Before you ask, i don’t know when it kicks on, but you’ll get an error when it does.
https://support.pwncnc.com/kb/article/478-chiller-error-codes/
Personally, I leave my pump on all the time. I’m in Missouri in an attached garage so I don’t get too hot/cold. My bucket typically stays in the 75-80F range. I use a wireless thermometer that has Bluetooth to my phone and I can set high/low temp warnings.
YoLink Weatherproof Fluid, Air,… https://www.amazon.com/dp/B08Z3XH313?ref=ppx_pop_mob_ap_share
From what I see in the diagram above, I would recommend against connecting the VFD to the IoT device. I’ve seen quite a few people that get power warnings on the VFD when starting both the shop vac and VFD at the same time.
The 110v vfd should be on a dedicated 15a circuit, or a 20a circuit sharing something small.
A shopvac or dust collector are not considered small.
