@Edwin, supplementary question, the PDF you sent has an entry “Waterboard & Clamping Kits for CNC”, is that a typo, should that be “Waste Board & Clamping Kits for CNC”?
Missing in @ITmaze’s sheet and your doc is the speed of the linear modules. This detail is also a parameter of the Fusion 360 machine specification files. I’d appreciate it if you can get that info from your engineers.
@Anm, I’ve added a row for it, but I don’t yet have the actual specifications for it.
Sorry, @ITMaze, you are right. I saw that and meant the data was missing, not the row for the data.
Good morning all,
First post to the forum here and a new Snapmaker owner/user but not new to 3d printing and CNC.
I’ve been trying to find some information on the power consumption of the A350 in its different configurations, Printing, Laser and Milling. I can set up current probes and figure it out but i thought I would check before I decide to have at it.
Just go straight to that. The only information I’ve ever run across about current consumption is that the rate of heating the bed is limited by current capacity. (The heated bed uses DC that goes through the main power supply.) And that information was only qualitative, not quantitative.
It’s too bad that this system didn’t get designed in such a way that the various modules are required to report their current consumption. It wouldn’t take much: a single A/D pin and a precision 4-terminal resistor. When you design a modular system that in its fullness has an arbitrary number and combination of modules, you’d really like to be able to measure current consumption automatically.
Yes I saw the documentation glossed right over that. I will have to do three samples, one for each module. Right now I need the printer more than anything but once I get some numbers I’ll share to the group.
When mine arrives I intend to do some measurements using a TP-Link HS110: https://www.tp-link.com/au/home-networking/smart-plug/hs110/
I also plan to leave that plug there so I can switch off the SM remotely at the power switch.
There also five linear modules, a heated bed, the main controller, and a touchscreen. The Z-axis modules will typically have the highest loads of any of the linear modules.
Whoa i never saw that before, really cool!
Yes true, but those will be running during the tests so its the aggregate that I am looking for. I thought about looking at the power factor as well but truth be told, the electric company only cares about apparent power, the don’t care about real power. Im doing this for a costing exercise to determine the true cost of running the unit.
At least my power company only cares about real power. kVA metering is not a thing around here, although I agree it’s better.
And to discourage abusing that we also have a separate power factor penalty, but it’s a simple calculation of IF PF<0.97 THEN (.97-PF)*(kW Demand Bill) for customers with demand meters, anyone without a demand meter (residential customers and small commercial) do not get power factor penalties.
Correct! That is why I abandoned that approach. I’m a bit old school so we call it Imaginary power, but the modern vernacular is Apparent Power. I wouldn’t imagine it would be too far off kilter, as there is a lot if resistive load and the whole thing is run off a switching power supply anyway, even the heaters. So for me, my biggest concern is RFI with all my radio stuff
Haha real power is orthogonal to reactive power, yea imaginary is better though. Even better is the obligatory “watts is the beer, the foam is the vars, and the whole glass is VA”
Hahahaha Like that one!
We have a scada system to monitor PF in real time. For short hand we generally just use kva as kv because its close enough and we shouldn’t be designing anything to fall into the difference
Oh no… That’s horrible
Heh oops I meant KW, not KV. Yeah it would not be good to use power in place of voltage lol
So here’s what I came up with on my little experiment last night. I made a box and inserted a current probe from a power monitor meter i had laying around. One of those multifunction panel meters that shows line voltage, Freq, PF, Current and Wattage. I monitored the meter through the cycles and recorded the readings (see below). BTW power factor was near unity most of the time, .98-.99. At times it dipped to about .96 but I do not know how accurate this cheesy little meter is.
Here are some numbers from another thread: