N0VUSUN and Mitsubishi-D700-SC

[JAZZCNC]

Ok well you have the Nvem S-axis wired up so were are you running those wires.?

I've never used either of these but I've wired many others controllers and VFD's and they all pretty much work the same.
Here's where I think they should go after looking at both manuals.

S-axis /Gnd1 goes to terminal 5 on Vfd which is Analog Gdn
S-axis/VSO goes to terminal 2 on VFD which is 0-10V.

This is your 0-10V speed reference voltage. Terminal 10 on the VFD is a 10V speed reference voltage in case if you wanted to use a potentiometer (POT) and would go to the wiper of the POT. In this case you don't need it because the Nvem supplys the 0-10V

S-axis/Out1 goes to STF on VFD (forward rotation)
S-axis/Out2 goes to STR on VFD (Reverse rotation)

Edited: After reading Nvem Manual little more.

However this would mean you have to tie the VFD control logic Gnd which is Terminal PC on the VFD to the same supply Gnd that the Nvem uses.
(this bit I'm not sure about now because I would have expected the Analog Gnd to be separate to the Output Gnd and it doesn't appear so reading the Nvem manual.?)

You may be better and safer for the VFD using separate relays controlled by the Outputs to control the Run/Stop on the VFD by running the VFD connections thru it's contacts.

All your basicly doing is using Outputs 1 & 2 on the Nvem to turn on/off the RUN signal on the VFD by shorting STF/STR to PC(Gnd).

Then it's just a case of setting up the Outputs for Forward/Rev and Pulley speeds in Mach3 which the manual should tell you how.

Hope this helps.

[Daveo]

Ok well you have the Nvem S-axis wired up so were are you running those wires.?


I've never used either of these but I've wired many others controllers and VFD's and they all pretty much work the same.
Here's where I think they should go after looking at both manuals.

S-axis /Gnd1 goes to terminal 5 on Vfd which is Analog Gdn
S-axis/VSO goes to terminal 2 on VFD which is 0-10V.

This is your 0-10V speed reference voltage. Terminal 10 on the VFD is a 10V speed reference voltage in case if you wanted to use a potentiometer (POT) and would go to the wiper of the POT. In this case you don't need it because the Nvem supplys the 0-10V

S-axis/Out1 goes to STF on VFD (forward rotation)
S-axis/Out2 goes to STR on VFD (Reverse rotation)

However this would mean you have to tie the VFD control logic Gnd which is Terminal PC on the VFD to the same supply Gnd that the Nvem uses and this would need to be 24Vdc because that's what the VFD requires.


Or if your using a lower voltage say 12V to run the Nvem then you would need to connect the Out1 and Out2 to relays which use 12V coils and then put the STF and STR thru the relay contacts and back to PC on the VFD.

All your basicly doing is using Outputs 1 & 2 on the Nvem to turn on/off the RUN signal on the VFD by shorting STF/STR to PC(Gnd).

Then it's just a case of setting up the Outputs for Forward/Rev and Pulley speeds in Mach3 which the manual should tell you how.

Hope this helps.

[Daveo]

Hi JAZZCNC
thanks for your reply,
Ok well you have the Nvem S-axis wired up so were are you running those wires.?

Nvem S-Axis out1 Orange and White twisted pr goes to STF on the VFD
Nvem S-Axis out2 Green and White twisted pr goes to STR on the VFD
The other two twisted pairs blue and white,brown and white have not been connected as yet but looks like terminal 5 and 2 after reading your reply

S-axis /Gnd1 goes to terminal 5 on Vfd which is Analog Gdn
S-axis/VSO goes to terminal 2 on VFD which is 0-10V.

[JAZZCNC]

Hi JAZZCNC
thanks for your reply,
Ok well you have the Nvem S-axis wired up so were are you running those wires.?

Nvem S-Axis out1 Orange and White twisted pr goes to STF on the VFD
Nvem S-Axis out2 Green and White twisted pr goes to STR on the VFD
The other two twisted pairs blue and white,brown and white have not been connected as yet but looks like terminal 5 and 2 after reading your reply

S-axis /Gnd1 goes to terminal 5 on Vfd which is Analog Gdn
S-axis/VSO goes to terminal 2 on VFD which is 0-10V.

Read my edited reply.

[Daveo]

JAZZCNC
Thanks for your help and it has got me further then i was but i am not sure to do now
Edited: After reading Nvem Manual little more.

However this would mean you have to tie the VFD control logic Gnd which is Terminal PC on the VFD to the same supply Gnd that the Nvem uses.
(this bit I'm not sure about now because I would have expected the Analog Gnd to be separate to the Output Gnd and it doesn't appear so reading the Nvem manual.?)

You may be better and safer for the VFD using separate relays controlled by the Outputs to control the Run/Stop on the VFD by running the VFD connections thru it's contacts.

All your basicly doing is using Outputs 1 & 2 on the Nvem to turn on/off the RUN signal on the VFD by shorting STF/STR to PC(Gnd).

Then it's just a case of setting up the Outputs for Forward/Rev and Pulley speeds in Mach3 which the manual should tell you how.

Hope this helps.

do i need to use relays as the power supply for the Nvem is 24v
Thanks Dave

[JAZZCNC]

Dave the thing that's concerning me is that Analog Gnd is shared with the Common Gnd to the outputs and not isolated. I'm sure it will work as I described but it's not a good setup in my eyes for the reasons Doddy stated with noise etc feeding back into the Analog and vise versa.!

Personaly I would feel more safe by using the outputs to control a relay and then feed the For/Rev thru it's contacts then if any stray voltages/currents get fired out they don't fry the VFD logic. You still may get noise issues and the Odd strange behavior but at least the VFD is safe.

Also regards your earlier comment about twisted wires and not being too concerned about noise, then if your actually wiring the machine rather than just testing on the bench I strongly suggest you re-think that because if you get any noise issues it will send you crazy and I mean proper hair pulling sessions so it's worth doing correctly straight off the bat.