Problem- spindle won't start

[russb8]

hello
i have a milltronics partner I
serial#1772-901 with a centurian 5 controller on it
the spindle will not start on it
i put in a spindle speed in mdi (like m3s500)
hit cycle start and spindle will not start
sounds like the switches are doing something in the
electronics box but nothing happens
i have had the machine for 3 years and use it about once a week
any suggestions would help!i need this machine running again
thanks ,russ

[bwilkinson]

I can think of one of four things:

(1) The motor controller is not receiving the signal to start from the card cage.
(2) The motor controller is not receiving the speed from the card cage, and assuming zero.
(3) The motor controller is damaged.
(4) The motor is damaged.

So, a few questions:

(1) Does the motor turn on in reverse? If so, it would lead me to believe it is not receiving signal from the card cage for forward (with the Partner 1 I have helped out, forward and reverse are two different signals).

(2) Do you have enough electrical experience to work in a "hot" environment? Because if not, you need to call someone. My next areas would be checking signals using a DMM to make sure the motor controller is getting signals. In the controller, Pin 1 to ground should read 24 VDC when the machine is not rotating "forward", and should read 0 VDC when it is. Similarly, pin 2 should read 24 VDC to ground when the machine is not spinning in "reverse", and 0 VDC when it is.

Above and beyond that, I do not know how to test the motor controller or the motor.

[John Bennett]

Does this machine have a float level spindle inhibitor switch on the way lub , that when the level in the container is at a low, the spindle will not turn on?

[moldcore]

I guess you haven't overlooked the obvious in that the speed switch hasn't been turned down to zero. Been there done that.

[chipsinpan]

If it has a tool changer , do a M6T1 , and see if it rotates the spindle to orient .
Make sure the air is connected .