Possible PROBLEM regarding product page wiring diagram.

[Dazp1976]

To cncdrive.
On product page for AXBB-E the wiring example shows vfd is directly connected to outputs for FWD/REV & 24vO.
That is using the J1000 drive which has a 24v control system so is perfectly compatible.

However. Most of the cheap vfd from China are 12v control internals. I see a problem with directly connecting them the same as the J1000.
It's mixing 12v and 24v controls together so in my view should have a relay in between for control.
I see many people having issues with getting vfd working and breaking the AXBB-E board too.
Could this mixing be the problem??.

Thanks.

[cncdrive]

No, this cannot be a problem, because the isolated outputs of the AXBB-E are NPN outputs, they pulling the output to ground (24V0).
And the ground (24V0) has to be commoned with the VFD's Digital interface ground, so the AXBB-E isolated outputs and the VFD digital interface are on the same potential.
But the AXBB-E never pulls the output to 24Volts, because it cannot do that as NPN outputs can only pull the signal to ground potential.
Basically all VFDs what I've seen including Chinese ones have the digital inputs (start/stop, FWD, REV etc.) internally pulled to 12Volts or 24Volts or 10Volts.
It does not matter what Voltage these signals are pulled to inside the VFD, it works OK with the AXBB-E as it is drawn in the example VFD wiring in the AXBB-E users manual.

[Dazp1976]

No, this cannot be a problem, because the isolated outputs of the AXBB-E are NPN outputs, they pulling the output to ground (24V0).
And the ground (24V0) has to be commoned with the VFD's Digital interface ground, so the AXBB-E isolated outputs and the VFD digital interface are on the same potential.
But the AXBB-E never pulls the output to 24Volts, because it cannot do that as NPN outputs can only pull the signal to ground potential.
Basically all VFDs what I've seen including Chinese ones have the digital inputs (start/stop, FWD, REV etc.) internally pulled to 12Volts or 24Volts or 10Volts.
It does not matter what Voltage these signals are pulled to inside the VFD, it works OK with the AXBB-E as it is drawn in the example VFD wiring in the AXBB-E users manual.

Thank you for the answer.
So if the VFD fwd/rev are on the 12v+ and GND is 12v-....
The F/R go to outputs and the GND goes to 24VO.

The other way round may do damage though yes?.