Boxford 190vmc upgrade

[davethesteam]

Hello Steve,

Spindle sensor is for feeding back the spindle speed or for tapping synchronisation. Spindle position doesn't matter for the toolchanger. The spindle sensor will probably have 2 wires for LED and another 2 for the (photodiode) detector. The slots in the sensor disk cause the detector to pulse once per slot. Try and read any numbers off the sensor and look for a datasheet on the net. Don't worry about the ones with 5 leads as they have a different detector. They are not expensive to change if you need to.

I can't find any details on my wiring diagrams, sorry

David

Next question for you both.

Basically there is a spindle sensor, I assume it must be required for the auto toolchanger as it used to rotate the spindle to a specific angle prior to activating the tool changer. So was wondering how I go about determining details of this sensor.

At this moment in time I have found the wires that come from the sensor (pic attached). Wire colours are blue, green, yellow and red. Is there any relevance of wire colours for sensors?

[JAZZCNC]

Has Dave says will be for spindle feed back and the colours will probably be something like this but they could be anything has well.
Red = 5v (For LED)
Grn = 0v(gnd)
Yel = Signal +
blu = Signal -

If it's like most of these Slotted Optical sensors fitted on these machines there will be 2 slotted sensors, one for RPM signal and one for Index signal wired together each with 4 pins. Model number will be something like 306-061
pin1 = Signal +
pin2 = signal -
Pin3 = Led -
Pin4 = Led +

Like Dave said you really need the switch model number.

[swood1]

Hmm,

I tried to run my spindle in reverse last night. I have changed the settings to give a long delay between start and stop but the spindle only seems to be going one way. I assume it must be something simple I am missing. Also managed to get some photos showing the inside of the spindle and it's sensors. Will post later when I get chance.



Regards

Steven.

[JAZZCNC]

I tried to run my spindle in reverse last night.

How are you trying to do this.? . . . How do you have it setup.?

[swood1]

Hi Jazz,

I have it setup basically as originally proposed (ie. Wiring into the green board, where Agnd on 107 goes to 0v, and Aout to 10V), I shall get some pics showing my wiring when I get some time. The spindle works well with Mach3 currently including slow/fast and I can adjust the ramp up etc. Just cant get it to go backwards at the moment.

Regards

Steve

[JAZZCNC]

Hi Jazz,

I have it setup basically as originally proposed (ie. Wiring into the green board, where Agnd on 107 goes to 0v, and Aout to 10V), I shall get some pics showing my wiring when I get some time. The spindle works well with Mach3 currently including slow/fast and I can adjust the ramp up etc. Just cant get it to go backwards at the moment.

That is just the Speed control of the motor. The Reversing will be done by relays or Contactors that switch the Polarity of the Motor. You control these Contactors using the Relay OUTPUT's on the 107 board. Then in Mach3 you setup which OUTPUT/Relay controls Forward or Reverse.

The time Delay you setup is how long Mach waits before turning that OUTPUT/Relay On/off.

[swood1]

Hi Jazz,

I have only re-visited the setup of my machine and last week I bought the full version of Mach4 which I now have setup. You stated in your last reply that I need to control the relay to switch polarity of motor. There is a relay on the original board for which if the direction and the 0v wires are connected it flicks the relay over and initialises reverse direction, it would be great if I could work out how to incorporate this switch within the 107. So I suppose my question is should I be using the original relay off the original CNC board or should I use the relay on the 107? If it's the relay on the 107 I dont understand which wire connects to which terminal on my power supply board (simplatron). Looking at the power supply board it does have 5v and 10v but no reverse option so I assume with my current setup the only way to get reverse is via the original relay unless I strip all this stuff out the machine. I attach a couple of photos, the one shows the original wiring the other shows my new wiring (temporary blue wires). Would be nice to hear your thoughts on this.



And reversing switch which works (when I join 0v and direction wires).


Steve