@OpenBuilds Can I use same IOT relay for driving both Deawlt 611 router and Bucktool 1HP 6.5 Amp dust collector ? Both connected to each 'Normally OFF' ports of the relay? Using blackbox 2.7
I'd be concerned about exceed the current rating of the IoT. Rather do it correctly, its only $28 for another IoT : docs:blackbox:connect-coolant [OpenBuilds Documentation] - much safer than overloading it Sure its rated 30A (EDIT recommended peak 12A), but peak power on spinning up inductive motors... With two relays you also stagger the startup a little so both don't start at once
You are right: as per IoT Relay "The durable SPDT control relay is rated at 30/40A, >400,000 operations at 12A or 2 million+ operations at 5A." They don't quote a number of operations on the 30A figure. So they kinda hint more at 12A.
@Peter Van Der Walt This morning I connected a 2nd IOT relay for the dust collector (1st one for Dewalt 611) to the blackbox 'Cool' port. Also followed the red and black connection as per the documentation. But it didn't run the dust collector. AM I missing something from the GCODE side?
Coolant on/off gcode is M8 and M9 You can test with the Tool On / Tool Off buttons in Control. Just click on them and select Coolant On or Coolant Off A faster way is typing in M8 or M9 in the serial console
Yes, probably. You need to have the GCODE add an M8 at the start and M9 at the end, to switch the "coolant" on and off. Editing your CAM post may be needed, some CAMs has a tickbox for enabling coolant. What CAM do you use, then may I'll be able to give a more specific answer
Sorry. I should've mentioned earlier. I was sending the code from Vectric pro (with Openbuilds post processor profile)
You may need to edit the Post for Vectric: You can download ours as a base: OpenBuilds/OpenBuilds-Vectric-Postprocessor Edit and rename accordingly so your own post shows up in the list after installing it: Add an M8 to the Header: OpenBuilds/OpenBuilds-Vectric-Postprocessor Add a new begin FOOTER section and add an M9 See Post Processor Editing
Looks good? +--------------------------------------------------- + Commands output at the start of the file +--------------------------------------------------- begin HEADER "T1" "G17" "G20" "G90" "G0[ZH]" "G0[XH][YH]" "M8" +--------------------------------------------------- + Command output after the header to switch spindle on +--------------------------------------------------- begin SPINDLE_ON "M3" "G4 P1.8" +--------------------------------------------------- + Command output to switch Coolant off +--------------------------------------------------- begin FOOTER "M9"
Almost, I'd consider putting the M8 before the G0 moves - I guess it takes a second or two to start up right? And you may want to start the dust extractor before the machine starts? Or not - entirely up to you. If you want to add a pause for it to come up to speed, you can also add a "G4 Px" line after the M8 where Px = seconds for example G4 P3 will wait for 3 seconds before continuing
Yes, it takes a few seconds for the dust collector to fully start sucking air. I'll move it before G0. I guess the M9 at the footer loks good too? Should look like this below: begin HEADER "T1" "G17" "G20" "G90" "M8" "G4 P3" "G0[ZH]" "G0[XH][YH]" +--------------------------------------------------- + Command output after the header to switch spindle on +--------------------------------------------------- begin SPINDLE_ON "M3" "G4 P1.8" +--------------------------------------------------- + Command output to switch Coolant off +--------------------------------------------------- begin FOOTER "M9"
I had to add more lines as below, since it got rid of M5 , M2 and move to (0,0,.8) from GCODE, when I added the footer begin FOOTER "M9" "M5" "G0Z0.8000" "G0X0.0000Y0.0000" "M2"
