Using mist coolant with Hillbilly board (Series I BP)

[Mr. Technical]

Hello all,

I have a Series I (previously Boss 6) that I have retrofitted with a BOB from Hillbilly. (It has worked great by the way!) I am wondering how to use the mist coolant feature. In Mach 3 I command M7, but nothing happens. The coolant switch on the left side of the cabinet is turned ON, and air pressure and coolant are present at the reservoir. All coolant lines are intact up to the nozzles. Do I have to wire up the BOB to allow this feature? If so, any direction on how?

I'd like to be able to use the mist feature since I work with aluminum primarily, and my WD40 trigger finger is getting sore Thanks!

[dougputt]

hello
I set mine up with coolant control through the hilbilly board, but i had to make a small relay board (using a 2n7000 transitor- you should be able to find a schematic if you google it) to control a 12 volt 10 amp relay (omron) then wired it in series to wire 202? i believe going from the 12v relay in the bottom of your cabinet (side cabinet)

[Mr. Technical]

Hi Dougputt,

That sounds like what I'd like to do, but I don't fully understand your description. Is there any chance you could post a schematic of this? Sorry to be so dense!!

[keebler303]

I did the same with mine.

I put an AQV252G opto relay into the hillbilly board. I used the opto relay to switch a relay to turn on and off the power to the external plug. I made a small board for this as well and mounted it where the old SSR was located.

I don't have a schematic but it is fairly simple.

opto relay on BOB > 12V relay > 120V outlet.

Matt

[dougputt]

I'm somewhat limited in my electonics knowledge so someone can feel free to jump in at anytime and correct me. I offer the following suggestions based on my trials & tribulations of hooking up the coolant control. It relay wasn't that hard to do once I got my pea-sized brain around it.
I'd love to send you a schematic but I can't seem to find it. If you google parallel port relay or similar there are some links there. I thought there was something in one of these forums on it as well. If I do come across it I will attache it.
But basically what i did was use output 16 on the BOB. You will probably need to jumper across where the chip usually sits pins 1 to 4 then 2 to 5 i believe. you will also need a small fuse that goes right next to the screw terminals if you look at the other terminals that the machine is hooked up to you will see the black rectangular fuse's. From the BOB you need to go to your relay control board that you will make up. I used a miniture 5vdc relay with the 2n7000 transistor to control it. That setup will only control a 12vdc relay that I put in the system to contol the ground signal going to the other side of the machine and the coolant control board.
Your small board that you make up with the 5vdc minature relay would burn up contacts in no time if you don't use the additional 12vdc relay.

I'm extremely busy with work the next few days but I will try to pop off some pictures or diagrams as soon as I can, with some part numbers and specific wire numbers & locations. I'm sorry I can't be of more assistance right now it's just this damn work thing!

if you send me your email I'll shoot you some more info as soon as I can!

Best Regards
Doug

[Mr. Technical]

Thanks Doug, this is very informative. I've sent you a private email. No rush!!

Ian

[keebler303]

Ian

The method I have tried to describe is very similar to what Doug is describing. THe beauty of the AQV252G is that it is itself a relay, capable of switching up to 2.5 amps. That means you can plug it right into the board, no jumpers like Doug describes, and you will only need a relay capable of driving the load of your coolant setup. YOu will not need any other transistor or external parts other than a relay.

Matt

[keebler303]

Here is a quick schematic of what I have done.

Both the AQV252G opto relay and the other relay you need can be found at www.digikey.com

The optocoupler gives you the advantage of optical isolation so you don't fry your computer if something goes wrong.

Good Luck
Matt

[Mr. Technical]

Hi Keebler303,

Thanks very much for the schematic! I will give this a shot. I plan to connect the negative lead to pin 5 and the positive lead to pin 4 or pin 6. Either looks like it will work. Thanks again!!

Ian

[dougputt]

I wish I could have found info on the AQV252 before I had gone through all the messing around I did!