Re: Dynamyte 2400 - Help Required Please

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "erdorpin" <writeco@...>
wrote:

>
> Can anyone help me to get one of these up and running? Mine is in
> excellent condition, with original software, though I suspect it

was

> standing unused for a time.
>
> I have a Programming Manual that makes reference to a Service

Manual

> that I don't have; and getting my hands on one of these would be a
> good start. So far, I haven't achieved much further than switching
> it on, - the display asks 'Ready', and after pressing 'Yes' it

makes

> a reference to backlash and goes no further. However, today after
> pressing 'Yes' the Z axis head made a tiny move and the display
> showed a message 'Intialising', but a humming noise lasted longer
> than I liked and I switched off in case of burn out.
>
> I'm sure it's something simple I need to do to get up and running.
> There must be folks out there who still operate these machines.

I've

> been told that Dyna don't support this kit anymore. Helpful

contacts

> who could save me a lot of dead ends, mistakes etc. would be very
> much appreciated.
>
> Thanks,
> Andrew.
>

Andrew,

The machine should be moving the axes toward the home switches while
the readout says 'Initialising'. If a motor is humming, but the axis
is not moving, it may indicate a 'stuck' axis. Can you remove a
motor, and check to see that it moves without a load? With the motor
removed, can you easily turn the leadscrew? The Initialisation
process starts with the Z axis first, and, I'm guessing, it stops if
it is unable to trip the Z axis homing switch. You could fool the
controller into attempting to home the next axis (X or Y) by tripping
the Z-axis limit switch twice while the machine is attempting to home
the Z-axis. If the machine is already at the home position in Z,
then it may be an issue with switch. It may be easiest to check that
the homing switch is working before disassembling the axis drive
motors. You should be able to find where the two-wire homing
switches plug into the boards, disconnect them, and check continuity
while manually opening and closing the switches.

If the switch(s) are working correctly, you can try swapping axis
driver boards.

I have heard that the stepper motors on the 2400s are under-sized for
the job, and may stall for reasons as small as the increased drag of
cold way lubricating oil. Is the machine in a cold shop? Are the
ways lubricated, and free of corrosion?

If the controller is able to complete initialisation, it will stop at
the 'Mode?' prompt.

You can email me off line if you prefer.

Patrick