Help needed Connecting the VFD

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john543
Posts: 48
Joined: Wed Oct 06, 2021 3:04 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: E06234795241-0928215226
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Maine

Help needed Connecting the VFD

Post by john543 »

Hey all
I'm so confused on hooking up the VFD, I have a Leeson sm series vfd I downloaded the manual from said vfd web and have narrowed it down to a 2 wire connection and 3 wire connection.
This vfd came originally on this machine but had no documentation as to how it was hooked to the old controller.

I followed Marty's layout almost to a tee seeing I'm using the same type of clearpath servos except my vfd draws 24 amps according to the manual. I've had a few set backs ordered from Amazon and found the supplies were not as I expected ( meaning quality sucked Chinese made) and didn't want to chance frying the system or burning down the house.
Attachments
IMG_20211021_170917648.jpg
IMG_20211021_163830089.jpg
Last edited by john543 on Fri Oct 22, 2021 9:29 am, edited 1 time in total.
john543
Posts: 48
Joined: Wed Oct 06, 2021 3:04 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: E06234795241-0928215226
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Maine

Re: Connecting the VFD

Post by john543 »

Sitting here eating supper I think I figured it out.
#1 is fwd should go to NO on relay 4

#13A is reverse and should go to NO on relay 5

#11 is analog input should go to Vout on Acorn
Let me know if I'm right I really don't want to fry anything.

By God Jim I'm A Machinist not an Electrician...
john543
Posts: 48
Joined: Wed Oct 06, 2021 3:04 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: E06234795241-0928215226
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Maine

Re: Connecting the VFD

Post by john543 »

So another question has got me baffled. I see no mention of a fault reset in my documentation to be able to set it for either 13B or 13E see picture. Looking at the top picture is it p12 set to 07 give me the reset I'm looking for?
Attachments
IMG_20211022_084520315.jpg
IMG_20211022_080508076.jpg
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Help needed Connecting the VFD

Post by cncsnw »

#11 is analog input should go to Vout on Acorn
Let me know if I'm right I really don't want to fry anything.
It looks to me like terminal #11 is the sequence common, which you would connect to the common terminals of your forward and reverse output relays.

It looks like terminals #5 and #2 are for the 0-10V analog speed reference.
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Help needed Connecting the VFD

Post by cncsnw »

No, if you set P12 = 7, then closing terminal 13-E would cause a fault (not reset one).
john543
Posts: 48
Joined: Wed Oct 06, 2021 3:04 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: E06234795241-0928215226
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Maine

Re: Help needed Connecting the VFD

Post by john543 »

So I should set it to normally open not normally closed?
Attachments
Screenshot_20211022-174014.png
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