Poser supply wiring to switches and motors questions
20 Oct 2020 20:57 #186749
by kbec
Poser supply wiring to switches and motors questions was created by kbec
I have a Mesa 7i96 and looking to wire up limit switches to it. I have a small Sherline mill and most what I have seen uses a hefty power supply. My setup currently has a 5v power supply for the board, and a 36v for the motors. The 36v has 3 36v connections, and I wired each to a motor driver.
I am looking to add the limit switches and another axis, do I need another 36v or other power supply? Can I just hook up more than one motor to the outputs on the power supply?
Thanks
I am looking to add the limit switches and another axis, do I need another 36v or other power supply? Can I just hook up more than one motor to the outputs on the power supply?
Thanks
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20 Oct 2020 21:04 #186751
by rodw
My take would be that normally you would end up wit 3 power supplies, 5v logic, 24 v field power and motor power.
A small 2 amp din rail 24v power supply would be sufficient. I made a big mistake here and wasted a lot of space in my control panel!
Replied by rodw on topic Poser supply wiring to switches and motors questions
I have a Mesa 7i96 and looking to wire up limit switches to it. I have a small Sherline mill and most what I have seen uses a hefty power supply. My setup currently has a 5v power supply for the board, and a 36v for the motors. The 36v has 3 36v connections, and I wired each to a motor driver.
I am looking to add the limit switches and another axis, do I need another 36v or other power supply? Can I just hook up more than one motor to the outputs on the power supply?
Thanks
My take would be that normally you would end up wit 3 power supplies, 5v logic, 24 v field power and motor power.
A small 2 amp din rail 24v power supply would be sufficient. I made a big mistake here and wasted a lot of space in my control panel!
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20 Oct 2020 22:37 #186764
by BeagleBrainz
Replied by BeagleBrainz on topic Poser supply wiring to switches and motors questions
I think I'm up to 6 PSU's ATM.
But to be fair 1 is is an "always on" 24V dc supply that controls a bunch of contactors to control the AC power to various other areas. Tho I think I have gone a little overboard, trying to be modular.
But to be fair 1 is is an "always on" 24V dc supply that controls a bunch of contactors to control the AC power to various other areas. Tho I think I have gone a little overboard, trying to be modular.
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21 Oct 2020 00:43 #186772
by kbec
Replied by kbec on topic Poser supply wiring to switches and motors questions
Constantly learning as I go so to speak. I kind of thought the three power outputs on the power supply were isolated, but I don't think they are. I may end up wiring one of the sets to a couple of terminal blocks and run that to my stepper drivers. That may make things a bit neater. Right now it kind of looks like a spaghetti bowl. The terminal blocks I do have in place help a lot.
My 36v is 10A, and my 5v is 5A.
My 36v is 10A, and my 5v is 5A.
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21 Oct 2020 00:47 #186773
by rodw
With the 7i76e, you could do it this way but for the 7i96, you have to add a 5V logic supply as well.
24v 1.7A Meanwell MDR-4-24 power supply and 60v AC 12.5A custom toroid dual wound for 110v and 240v input.
More to come...
Replied by rodw on topic Poser supply wiring to switches and motors questions
I think I'm up to 6 PSU's ATM.
But to be fair 1 is is an "always on" 24V dc supply that controls a bunch of contactors to control the AC power to various other areas. Tho I think I have gone a little overboard, trying to be modular.
With the 7i76e, you could do it this way but for the 7i96, you have to add a 5V logic supply as well.
24v 1.7A Meanwell MDR-4-24 power supply and 60v AC 12.5A custom toroid dual wound for 110v and 240v input.
More to come...
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21 Oct 2020 00:47 #186774
by BeagleBrainz
Replied by BeagleBrainz on topic Poser supply wiring to switches and motors questions
As Rod said a separate 24V dc psu would be the way to go, they are pretty inexpensive and don't require a lot of power.
Leave the 36V for the Motors.
Leave the 36V for the Motors.
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21 Oct 2020 01:32 #186777
by kbec
Replied by kbec on topic Poser supply wiring to switches and motors questions
I have a Masso Optical encoder that needs 24v too, so I am hoping to be able to use that for the limits and the encoder, correct?
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21 Oct 2020 01:53 #186781
by BeagleBrainz
Replied by BeagleBrainz on topic Poser supply wiring to switches and motors questions
Should be ok. I'm only saying "should" as Murphy's Law could rear it's ugly head.
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22 Oct 2020 22:44 #186937
by kbec
Replied by kbec on topic Power supply wiring to switches and motors questions
Now I have a 24v on the way. Do you guys know of anywhere that shows some sort of wiring schematic?
I really like the DIN rails and stuff, but all of that comes at a price too. Maybe I'll do that down the road some time. Right now everything is scattered on my table.
I really like the DIN rails and stuff, but all of that comes at a price too. Maybe I'll do that down the road some time. Right now everything is scattered on my table.
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22 Oct 2020 23:01 #186939
by tommylight
Replied by tommylight on topic Power supply wiring to switches and motors questions
Warning:
Do not use 24V encoder wired directly to the Mesa board encoder inputs ! They are 5V inputs, so use of voltage dividers on the encoder output/Mesa input is mandatory.
Maybe those can be used as MPG encoders on field inputs, so do aks PCW .
Do not use 24V encoder wired directly to the Mesa board encoder inputs ! They are 5V inputs, so use of voltage dividers on the encoder output/Mesa input is mandatory.
Maybe those can be used as MPG encoders on field inputs, so do aks PCW .
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