What do your instructions say about it? The one I was mucking with had a led on the board with a warning in the instructions to wait for the led to go out.
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Suggestions on my vfd conversion
- Thread starter DPittman
- Start date
What do your instructions say about it? The one I was mucking with had a led on the board with a warning in the instructions to wait for the led to go out.
DPittman
Ultra Member
I'll have to check them when I get back home. I don't recall anything in the instructions but I'm pretty sure mine won't be any different than the rest.
The cooling fans on the vfds should draw the voltage right down I would think?
DPittman
Ultra Member
I know this is basic stuff for alot of people but it ain't with me so I figured it is safest to ask.
If I understand the wiring diagram properly on my 3 phase motor, to run in in low volt (230 volt) I need to tie together with a Marr connector wires:
1 and 7
2 and 8
3 and 9
And then the 3 lines from the inverter will connect to those three pairs? I haven't figured out yet if it matters which line goes to which pair.
Lines 4,5 and 6 get twisted together with a Marr connector. This motor does not have a tie bar thingy like some of them.
Can someone please confirm or corre t me on this. Thank you.
If I understand the wiring diagram properly on my 3 phase motor, to run in in low volt (230 volt) I need to tie together with a Marr connector wires:
1 and 7
2 and 8
3 and 9
And then the 3 lines from the inverter will connect to those three pairs? I haven't figured out yet if it matters which line goes to which pair.
Lines 4,5 and 6 get twisted together with a Marr connector. This motor does not have a tie bar thingy like some of them.
Can someone please confirm or corre t me on this. Thank you.
Yes, or you can also reverse it in the vfd programming menu
DPittman
Ultra Member
My wiring is starting to look like a colorful birds nest.
I have external potentiometer, rpm readout, auxiliary cooling fan for box housing, and simple single throw toggle switches for on/off and reverse/ forward.
If I understood the instructions right... I have the "on" wire from the toggle switch to X4. And I have the "reverse" wire from the other toggle switch to X5. However I'm not sure where the wires from the other side of the toggle switches go. "Com" port which is already being used for the potentiometer?
I have external potentiometer, rpm readout, auxiliary cooling fan for box housing, and simple single throw toggle switches for on/off and reverse/ forward.
If I understood the instructions right... I have the "on" wire from the toggle switch to X4. And I have the "reverse" wire from the other toggle switch to X5. However I'm not sure where the wires from the other side of the toggle switches go. "Com" port which is already being used for the potentiometer?
DPittman
Ultra Member
Isn't COM the same thing as ground?
For the "X" control signals, port X1 will connect to one side of the switch and the other side of the switch connects to "COM". There should be a contact marked "COM" for the pot and another for the X contacts.
Can you get a clear picture of the contact labeling?
Can you get a clear picture of the contact labeling?
Not necessarily, depending on the manufacturer and the circuit design, COM is a common connection point for signals in the same area of the circuit. The COM could be ground, 5volts, 12volts etc depending on requirements. The COM for the pot is possibly isolated to that control circuit to minimize the chance of interference.
Usually but not always. On the low voltage DC side it's what ever gives you a X volts (usually 5) potential across all of the other inputs.
I'm watching your post intently as I still haven't gotten my head around how you can have FWD/REV/JOG FWD/JOG REV all activated at the same time.
DPittman
Ultra Member
Oh boy I'm getting confused. Here are a couple of pictures.
In the fully wired picture here is what I've got going on.
Starting from the left
12volt terminal is a wire from a housing cooling fan and the external rpm readout.
X5 is the red wire which goes to one side of the reverse toggle.
X6 is the green wire that goes to one side of the on toggle.
COM is a wire to the external potentiometer
Vi1 is the brown wire which is the signal middle line from the external potentiometer
5V is the 3rd wire from the external potentiometer
The furthest right COM has one wire from the external rpm readout and one black wire from the housing cooling fan.
There is one black and one yellow wire hanging out in the air waiting to be attached to the correct terminals. These are the other lines from the toggle switches wired to x5 and x6.
In the fully wired picture here is what I've got going on.
Starting from the left
12volt terminal is a wire from a housing cooling fan and the external rpm readout.
X5 is the red wire which goes to one side of the reverse toggle.
X6 is the green wire that goes to one side of the on toggle.
COM is a wire to the external potentiometer
Vi1 is the brown wire which is the signal middle line from the external potentiometer
5V is the 3rd wire from the external potentiometer
The furthest right COM has one wire from the external rpm readout and one black wire from the housing cooling fan.
There is one black and one yellow wire hanging out in the air waiting to be attached to the correct terminals. These are the other lines from the toggle switches wired to x5 and x6.
DPittman
Ultra Member
And yes it is speaker wire. Is that a no no? I may have some other no nos happening to.