Planning - Bridgeport Interact 1 linuxCNC Retrofit

Do the encoder cables terminate in suitable connectors for an EXE unit? Maybe those are the best way to go?

Andy, the encoders terminate in 9 pin male plugs. I'm considering the exe boxes at the moment.

Most of my connections to the TCN-151 controller was cut. Not much of a bad deal. Also one of my encoder cables were cut. I can just shorten and install to the servo, I have plenty of slack.

The T2 transformer is an auto-transformer from my understanding. In the wiring schematic it shows it as using 103 and 104 as a power source. L1,L2 So I believe this is a step up transformer because the required voltage going to my servo amps require 380v input. Is this accurate? Or am I misreading the schematic?

cncnoob1979 wrote: Andy, the encoders terminate in 9 pin female plugs. I'm considering the exe boxes at the moment.

The encoders look like they will plug straight in to those EXE boxes that you bought and then cancelled.
So that just leaves the puzzle of finding connectors for the outputs, which Mouser seem to sell at a reasonable price.

The T2 transformer is an auto-transformer from my understanding. In the wiring schematic it shows it as using 103 and 104 as a power source. L1,L2 So I believe this is a step up transformer because the required voltage going to my servo amps require 380v input. Is this accurate? Or am I misreading the schematic?

If it was only L1 and L2 then I would say that you only need to re-arrange the input terminals to suit your mains voltage.
However, I am rather puzzled by the function of the UV inputs which seem like they might be + / - 180 V relative to the 0V line.

Maybe it would be wise to disconnect the outputs, re-arrange the inputs and check output voltages.

Andy,

Well good news. The autotransformer does step up voltage.

In accordance with the schematic I checked 0v line and my 380v line and received around 350v. My L2 (#112) is connected to 210v on the T2 transformer. (Was wired previously for 210 3ph).(I need to move it to the 220) I had to actuate 5FC relay manually to get the power to T2. I haven't figured out what signal to actuate it yet.

Now the bad news. I blew a resistor in my control cabinet upon first actuation of 5FC. (Scared the **** out of me!)

Attached is the resistor I'm currently trying to figure out what it goes to. I think power is heading toward my z axis limit switch wiring. (I had one disconnected and grounded) I think it was a 3R3 prior to me destroying it. But that is from memory.

I'm a child playing pilot in an Airbus here!



Alright. Traced it down to R7, #169 and #7. Guess I took out the z axis power resistor. Now to find a replacement. I think I found the short. I'm at fault. I had the wires hanging from the encoder box but failed to ensure one wasn't grounded. :doh:

Maybe someone should take this machine from me before I destroy it!

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So now the question: where to get a replacement and when the drive amps are powered are the servos immediately powered? I'm pretty sure I tested that. But just incase it should not have happened.

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Would this be a suitable replacement?

3.3 ohms/10W

Buy two, in case the fault isn't what you thought it to be.

Alright I bought 3 resistors, just incase! I also bought 3 702B exe boxes. With power cords.

The encoders will plug directly into the exe boxes but I'll have to get the output 12 pin male cannon plugs and pins.

Also I'll need to buy a female 10 pin adapter for the cut encoder cable going to the servo. That way I can re-wire the encoder as the factory.