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Controller hardware suggestions for first DIY build
- tommylight
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- BeagleBrainz
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From most of the data sheets I've seen the DIN Rail mount PSU are recommend that they are mount vertically. So depending on your space this maybe one thing you want to take into consideration.
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- txtrone
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- txtrone
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- txtrone
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tommylight wrote:
I agree, the first time the machine stops abruptly, it will kill the drive.Clive S wrote: I would not use 48V on a 50V drive. The back EMF could kill them.
40v would be safer. Just my opinion
Gecko uses 100V MOSFets on 80V rated drives so i have seen plenty of them go up in smoke, but i never managed to kill one of them as they do mention on their web site and provide the schematics for wiring a power resistor and a relay to prevent from killing the drives. I have yet to see some one else use that. I know i did.
Hmmm. Should I start another thread asking about what drives I should get? I have a lot of questions about that as well. Getting the PC loaded up with LinuxCNC was priority. Next I want to get the motors turning properly. I am open to try some other drives. KL model drives have been mentioned. Any others I should look at?
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- txtrone
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rodw wrote: Try this shopping list.
1 x Mesa 7i96,
1 x THCAD-5 (for 50:1 divider) or THCAD-10 for others,
1 x thcad-5 for ohmic sensing (Hypersensing)
Mesa DIN rail mounts
Mesa Common x 2 bus rail with their din Rail mount
1 x 2 amp 24v Meanwell DIN RAIL power supply for field power
1 x 2 amp or similar 5v power supply for logic
1 Meanwell HDR 15-24 isolated power supply for ohmic sensing
1 x 25 k 5 Watt resistor for ohmic sensing
1 x 390k resistor for ohmic sensing
3 x 90 ohm x 5 W power resistors for reliable arc OK
An IEC connector with built in RFI filter for mains power input
Stepper motor power supply to suit
Stepper drives to suit.
Mains fuse,
estop switch
Odroid H2+ with 4 gb RAM (8gb optional)
You might use some relays but really the 7i96 has them built in so there is no need to add more components and failure points.
Ok, so far I ordered a Mesa 7i96 and some DIN rail and one Gecko 251x to make sure I could get that much to work before I hauled off an bought the entire list.
I also ordered these power supplies:
-Mean Well USA MDR-60-24
-MDR-10-5
-HDR-15-24
-NDR-480-48
For the PEM I ordered this one:
www.alliedelec.com/product/schaffner/fn9264-10-06/70254153/
Is this the item you suggested, if so do I need just one of these and one of the din rail mounts for it? They sell the din rail adapter mounts in packs of 2 or 3.
store.mesanet.com/index.php?route=produc...id=230&search=common
I am holding off on the resistors and THCAD for the moment... just until I get the motors moving properly. Thanks again!
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