Search results

  1. Minder

    Treadmill potentiometer/pwm?

    For the PWM pin you should do a trace of the the pins and if like the MC2100, there should be a 4 pin Opto isolator that then goes to the processor. On the MC2100 ver. the series resistor is quite small value, so most interfaces require an added series res the value depends on the voltage used...
  2. Minder

    Treadmill potentiometer/pwm?

    I don't really have any knowledge of the MC5100 series, but I would surmise that LG1 is a GND connection, try metering it to LV common or the chassis. As to the 12pin HD2 the PWM normally goes to a small value resistor then to a 4 pin opto, on the MC2100 it is pin 1 (Common) and pin 4, PWM in...
  3. Minder

    Treadmill potentiometer/pwm?

    Appears you have a version of it, MC5100, looks almost identical to the MC2100's. It also appears to have the same HD2, 8 pin socket that takes the PWM command signal. Previously used to interface the console. The motor and power connections are plainly marked.
  4. Minder

    Treadmill potentiometer/pwm?

    The two blue wires are usually a thermal sensor in the motor. The MC2100 versions use a PWM 20Hz signal into HD2 socket to emulate the console signal. There are 555 circuits out there, I also made some up using a 8pin picmicro. with stop start P.B. inputs. With MC2100 the input is isolated from...
  5. Minder

    Help converting lathe from 110v to 220v?

    Have you followed the directions on the plate for the required direction for 240v operation, seems like just a jumper change?
  6. Minder

    220v leg isolation

    You would need to rewire using the 120v live and neutral, but proper fusing and sufficient current carrying capacity of the motor relay would have to be confirmed. Why not try a new capacitor on the current motor, it did not last very long?? BTW the capacitor should be in series with a winding...
  7. Minder

    how to go from one power source to many power sources

    They are not necessarily, in the general sense. Depends on the individual design.
  8. Minder

    how to go from one power source to many power sources

    You don't specify any requirements? Voltage(s) current(s) etc?? I have done some thing under that general description with a Toroidal linear supply and some overwinds/secondary's. You have the choice of shared commons or galvanically isolated. Do you require regulation?
  9. Minder

    Mains quick testers.

    You only have to travel ~50mls for a different accent in the UK. As an ex UK pat by birth, I have had a yearning for Crumpets, so I have had to resort to making my own, as they do not know anything about them in Canada. Just like Marmite, the only ones that can even get it past their lips has to...
  10. Minder

    Closed loop for two brushless motors

    For some many decades now I have been using the popular quadrature encoder for PID servo loop feedback. And In DIY products using them with the likes of the Galil motion cards, where the encoder response feedback is in the order of 18mhz now.
  11. Minder

    American 220 wall heater problem...

    You cannot calculate the amperage of a AC inductive device (e.g. motor) from a resistance reading. It possesses inductive reactance which reads a lot higher than the DC resistance, this is what limits the current
  12. Minder

    American 220 wall heater problem...

    In N.A. it is 240v 120v-0v-120v. The 240 v is the same as 2x120v. The thermostats do not appear to be voltage sensitive, so any equivalent should suffice.
  13. Minder

    Solenoid Help

    That might work on an AC version, bit the efficient way is to wind on a lot more turns for a DC solenoid.
  14. Minder

    Solenoid Help

    I assume that is 12.6vdc? Or?
  15. Minder

    AC motor question

    So if you intend using the threaded version, then you will need to lock-nut it or ?
  16. Minder

    AC motor question

    Appears that motor has a left hand threaded shaft, often not reversed in the actual application due to the unthreading action. If the windings are equal however, it should be electrically reversible.
  17. Minder

    AC motor question

    PSC motor, move L1 to S to reverse.
  18. Minder

    Closed loop for two brushless motors

    The title of the thread indicates Mechatronics, " Closed Loop for Two Brushless Motors" Done consistently in most CNC applications, via PID.
  19. Minder

    Switching DC motor with TIP122 and Arduino

  20. Minder

    Switching DC motor with TIP122 and Arduino

    The device will need to handle the initial current, especially if a load is present at switch on.
Top