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  1. SaraJoy

    Stepper Motor Temperature

    Yes I have done so, the voltage is 12V ... However, that voltage is provided via two step-down resistors at 30 Ohms. As the stepper heats up, its own resistance increases from 30 Ohms to about 33, meaning that it gets a higher voltage across it the hotter it gets - bit of a vicious cycle! The...
  2. SaraJoy

    Stepper Motor Temperature

    I'm currently running a 12V 1.8deg stepper motor, doing a short sequence of about 4 secs duration: one 180deg move, one 90, another 90, with about a second's stopping between each move. There is no load on the shaft. But!! It is running at about 70deg Centigrade (and still rising), which is...
  3. SaraJoy

    Mitsubishi Melsec FXos data register trouble!

    Thanks xyzz, shame that link isn't working for me though :(
  4. SaraJoy

    Mitsubishi Melsec FXos data register trouble!

    Thanks, that is exactly what I needed! My problem now however gets a lot more complicated (probably deserves a new thread) - I am using the FX0s, but would ideally like to use a function present in later FX's - PLSR. I have PLSY and RAMP, it's just a case of making the ramp up and the ramp down...
  5. SaraJoy

    Mitsubishi Melsec FXos data register trouble!

    I've tried the forum search to no avail, I am convinced this is an easy-answer question to those in the know... ...So how on Earth do I write data into a register? This is the FXos-14MT-DSS (though I'm sure most of the FX's are the same), and the software I'm using is FXGP/WIN-E. According to...

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