[kbspeed]

I have a huge project ahead of me and hope that I can get some help. We have aquired a VF3 (1996?) from a plant that had a central coolant system and they had modified the wiring to their coolant sytem. If I can at least find the output for M8 code I can wire that to a relay and eventually to a pump. Any info on the programmable coolant nozzle would be a plus also.

Thanks for the help

[greg emmon]

our vf from that era has the pump pluged into the lowest outlet on the side of the controll box the m8 should turn that outlet on and off

[panaceabea]

helicoptejohn has a video on hooking up a solenoid for airblast which shows the location of the relays . they have leds on board so you can punch in m8 / m9 in mdi and see which relay controls the contactor for the coolant pump.

Here is a link to the video, even though it may no be your exact IO board it should at least get you close [ame="http://www.youtube.com/watch?v=zssH53f_7sA"]YouTube- HAAS TM-1P Air Solenoid Valve Utilizing M23 Relay[/ame]

[Haas__man]

If you open the electrical cabinet
Bottom left of cabinet is i/o pcb
about 4 plugs up from bottom right side should be the plug you are looking for.
It should be labelled 'coolant'

Hope this helps
if not I could take a look at a i/o board and get you a plug number.
Let me know.

[kbspeed]

I appreciate all the help so far! This is what I have so far.

LED light on i/o board lights up when M8 is entered.
Found the coolant plug on the i/o board which in turn runs to a 110 volt twist lock plug on the left of the electrical cabinet. When M8 is entered, LED coolant light is lit but no voltage at the coolant plug. When I turn the switch on this panel (see attached pic) there is constant voltage at the coolant plug-M9 or M8 have no effect.

[Donkey Hotey]

Well, there's part of your problem. That's not a switch, it's a circuit breaker and it's supposed to be on all the time.

Turn that on and start tracing again. Did they use a relay on the older I/O boards?

[Haas__man]

Just as Donkey says, that is a circuit breaker, and must be left on all the time.
Also, the voltage will always be there on the output on the i/o pcb. Apparently when M8 is commanded, the voltage is switched to earth - which makes the pump run. I would suggest getting a pump and trying it.

Hope this helps.

[kbspeed]

DUHHH!! on the circuit breaker. Hooked a pump up but stays on all the time. Is the relay that is just below the LED to signal the pump is on; the relay for the coolant pump?

I really appreciate the help!

[panaceabea]

the small relay just below the led switches a larger contactor (relay) on and off that handles the pump, I dont know about the older Haas boards but both the newer ones i have there are screw terminals present right above the relay , the contactor it switches will not be located on the circuit board but mounted in the cabinet.

[kbspeed]

The only contactor I can find is the one for the spindle drive unless I am overlooking it which is quite possible. I have attached pics of the relay under the LED for the coolant pump as well as the pics of the cabinet.




Top of cabinet