Need assistance with electric enclosure please (CSMIO/AC Contactor issue)

[JAZZCNC]

You mean Mr. Bean

That's bit rich coming from Shrek. .

[Noplace]

ops forgot one complication, VFD fault line and drives.

for drives I guess CSMIO supports them independent of estop input. but how can I fit the VFD fault signal into the above setup? if I keep the E-Stop input as active high then again same issue of cycle between HV and EStop since the fault line of VFD will power up after HV is enabled only.

instead if I use active low setup and normally open connection of the VFD and E-Stop button and all, that would solve it I guess but is that acceptable risk? to have no signal as an indication of things are ok at E-Stop input?

the reason I want this is because I think its important that if VFD/spindle runs into trouble the drives stop also. it happend to me once with overcurrent error and luckily I was just using MDI so I would like to use the safety features of the VFD.

thanks!

[JAZZCNC]

Use a separate Relay and have the VFD fault Signal turn it on when goes active. Run the E-stop signal thru NO contact.

[Noplace]

new small issue/confirmation : regarding ground, it is best to have one point for all ground right? meaning if chassis of one device is grounded and the whole sheet is grounded, I should not wire the ground connections of other devices if they also ground their chassis right?

illustration:

in first photo you can see I have connected the power supply chassis to ground wire which goes back to main ground point ( distribution terminals ) so the whole back is grounded. in second photo VFD and power line filter have earth connections but by checking continuity test already these points are connected to back also. so should I skip connecting ground wire to them?

thank you!

[Noplace]

after some research I realized that all ground contacts should be connected and not rely back panel, anyway I need confirmation of another issue please

when connecting the VFD with contactor, should all wires ( L,N,Gnd) be connected through the poles or can I just connect the Live with contactor and rest direct from mains power?

what about the DC output power supply for the drivers?

thanks!

[Clive S]

after some research I realized that all ground contacts should be connected and not rely back panel, anyway I need confirmation of another issue please

when connecting the VFD with contactor, should all wires ( L,N,Gnd) be connected through the poles or can I just connect the Live with contactor and rest direct from mains power?

what about the DC output power supply for the drivers?

thanks!

If you really want to connect the VFD through the contactor then just the live would be fine (and not the N or E), but having said that I suppose it depends on the power system to your building as it may be different than the UK.


I personally would not connect the mains VFD through the contactor but would just connect the signal wire to make it stop.

The DC output from the power supply should not go through the contactor either .

Perhaps you should find somebody local to give you some help with this before you get a chance to damage it all or yourself.

[Noplace]

If you really want to connect the VFD through the contactor then just the live would be fine (and not the N or E), but having said that I suppose it depends on the power system to your building as it may be different than the UK.


I personally would not connect the mains VFD through the contactor but would just connect the signal wire to make it stop.

The DC output from the power supply should not go through the contactor either .

Perhaps you should find somebody local to give you some help with this before you get a chance to damage it all or yourself.

hmm well I seem to remember reading that it's safest to turn off power instead of just relying on signal coming out of the devices(drivers,VFDs)
and the examples in the CSMIO show it this way.

also I would like to you utilise the software to enable a power on signal