In Preperation for hooking up Delta ASDA-B2 to Acorn.

[Muzzer]

Also known as a metal oxide varistor (MOV) or voltage dependent resistor (VDR). Quencharc is a tradename of Cornell Dubilier.

Various other brands available depending where you live such as https://uk.rs-online.com/web/p/metal-ox ... s/5380783/
https://www.tdk-electronics.tdk.com/inf ... andarD.pdf

[cnckeith]

fyi...many modern contactors have "snap in" snubbers/quench arcs. it just looks like part of the contactor after installed.

[AnnArborNate]

Thanks so much for everyone chiming in with info! I appreciate you all taking the time.

Great to know more about snubbers. I have been reading a bit about them on this forum. I will order a handful from Centroid in the morning.

Truth is, that I was actually referring to the schematic symbol that is between the drive control circuit 220vac input (single phase) and the supply line of 3 phase 220vac. I have decent 220vac 3 phase from an American Rotary 20hp phase converter, so I will be feeding the drive with 3 ph.

The component I was referring to (or at least trying to) is the one under the junction of 220vac3ph and the drive control circut input labeled L1c & L2c

[martyscncgarage]

Thanks so much for everyone chiming in with info! I appreciate you all taking the time.

Great to know more about snubbers. I have been reading a bit about them on this forum. I will order a handful from Centroid in the morning.

Truth is, that I was actually referring to the schematic symbol that is between the drive control circuit 220vac input (single phase) and the supply line of 3 phase 220vac. I have decent 220vac 3 phase from an American Rotary 20hp phase converter, so I will be feeding the drive with 3 ph.

The component I was referring to (or at least trying to) is the one under the junction of 220vac3ph and the drive control circut input labeled L1c & L2c

You sure would be saving us a lot of trouble if you would use Windows 10 SNIPping tool and get a screen capture of what you are talking about. We are just guessing otherwise....

Are you TALKING about this?:

fuse.JPG (11.49 KiB) Viewed 3062 times

Look like a circuit breaker logic power to the drive.....

[tblough]

Motor overload relay/contactor.

https://www.google.com/amp/s/anekalistr ... ion-2/amp/

[martyscncgarage]

I have asked Centroid to clarify....they drew the schematic. Overload relay contactor...where is the coil?
It appears to me to be logic power to the drive. Which, I would want to come on when the cabinet is powered up and stay hot with the control.
Hence my guess is that it should be a circuit breaker.....

Let's see what they say....the drawing seems to need clarification.

[AnnArborNate]

Motor overload relay/contactor.

https://www.google.com/amp/s/anekalistr ... ion-2/amp/

That's exactly what I was talking about. Thanks so much.

Interesting... so Centroid is recommending (per the delta wiring diagram) that a motor overload relay/contactor for the 220vac power input for the drive logic power input?

OH OK.. think I get it now. That is there to provide for a means (in general) to switch off and on the power to activate the drive logic portion of the drive.

Am I getting it now? seems like its there so that on your control interface you can have a switch that powers on/off the logic side of the drive. for resetting etc..

[AnnArborNate]

I have asked Centroid to clarify....they drew the schematic. Overload relay contactor...where is the coil?
It appears to me to be logic power to the drive. Which, I would want to come on when the cabinet is powered up and stay hot with the control.
Hence my guess is that it should be a circuit breaker.....

Let's see what they say....the drawing seems to need clarification.

Most excellent assistance you provide. Much appreciated.

Coming from my vantage point (limited skills with these matters) I am just trying to do this as carefully and professionally as I can this time. I have done various conversions of machines to CNC with Mach3, but I am trying to build this acorn controller as close to pro as is practical/possible. I can hack my way through things, but I have grown tired of hacky work and want to build a clean control with the appropriate safety features per the schematic.

I appreciate you asking for clarification from Centroid.

[martyscncgarage]

See attached Delta Schematic for OAK. Look at the Delta drives follow them. It is intended to be a circuit breaker. Centroid should clarify. The Acorn schematics are so small there isn't much room for a legend.

[AnnArborNate]

If i'm reading the OAK schematic correctly, the delta Axis drives are fed 2 phases of the 3 phase input power (labeled L2, L3) through CB3/4 and CB3/2 presumeably this is referring to Circuit Breaker.

The (NB1-D10-2P) shown in the legend appears to be the following CB-

https://www.ebay.com/i/184407440601?chn ... d84e8e3531