Grizzly G3616 #CNC #MILLS
¿ªÔÆÌåÓýProbably should have changed the subject rather than hijacking your post.? Sorry. ? Two other parts of this project are the HV power supply control. ?The board on the left has a relay and FET that shunts the power supply to either clamp an over voltage transient from a decelerating motor or when power is removed to discharge the capacitors as quickly as possible. ? The board on the right receives it's control signal from the PIC processor on the Power Control board to limit inrush current on the AC side into the transformer.? Two seconds later it closes and shorts out this relay. ? I also 3D printed a box that sits on the back mill power control box (Grizzly G3616 mill) and has two electronic circuit breakers that show voltage and current.? One supplies 220VAC to the 24V power supply, PMDX-126 and the PC/Monitor.? The other supplies AC to the big supplies for motor motion. ? An ESTOP/FAULT removes power from all motion components while leaving the PC alive. ? John ? From: [email protected] [mailto:[email protected]] On Behalf Of John Dammeyer
Sent: November-23-19 8:58 AM To: [email protected] Subject: Re: [digitalhobbyist] RELS Progress #RELS ? Nice idea for the ventilator. ? Still need to make the harm and support for the monitor/keyboard/mouse since the cabinet sits out of the way of chips and coolant. ? And you're not the only one with overkill on power supply cabinets.? ? The HV_Supply photo shows the 105VDC power supply for the XY and Harmonic Drive. The 60VDC supply is on the back and I can't get at it to make a photo at the moment. ? The ControlSide photo shows:from top left to right, two HP_UHU drives (105VDC) for the X/Y axis, then another plate with a Gecko (60VDC) for the Knee Stepper motor (and a 24V to 16V regulator for the HP_UHU)? and finally the STMBL AC Servo Drive for the 4th axis harmonic drive. ? Below that a DIN rail with a module I made to do level conversion of step/dir/enable/Fault to/from RS-422 for the STMBL drive along with DIN rail terminals.? On the right of that is a 24VDC switching power supply and at the bottom the PMDX-126 Break out Board.? ? The small 3D printed box holds another custom board that just translates a DB-25 from the AC Servo into the two RJ-45 cables for the STMBL drive. ? What's not shown is a second mounting board that holds either a SmoothStepper or MESA 7i92H.? At the moment I have the PC parallel port cable connected directly so I have only one parallel port and limited step rates.? With the Ethernet MESA 7i92H I get full 180 ipm on the X axis and can do all sorts of things to the PC without any motion control issues.? Same with the USB Smooth Stepper that I borrow from my CNC Router.? ? I've not yet decided if I will finalize on MACH3 or LinuxCNC but all I have to do is select which OS to run from the dual boot.? No cables to change unless I'm using MESA or Smooth Stepper. ? And I've 3D printed caps over the backs of the DC Servo CUI encoders. ? |
John Lindo