Announcement

Collapse
No announcement yet.

Electric motor overheats at speed

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #31
    Originally posted by derekm
    The motor is 1425 rpm 50hz 900w dual 380/440 -220/ 250V 2.1-3.6A motor

    The Drive is a 200-240V Single in 3 three phase out 4kVA 9A. The drive has its defaults at 1450 50Hz 9A constant torque profile. it runs fine no load it runs ok if the spindle is warmed up
    Ah HA.....................

    THAT isn't going to be bothered by a bit of slowdown in the motor...........
    1601

    Keep eye on ball.
    Hashim Khan

    Comment


    • #32
      no load (no belts) motor rpm1500 rpm
      with belts set for ratio 8 out of 9 motor rpm 1430 rpm
      with belts set for ratio 9 out of 9 motor rpm 1360 rpm and very slowly increasing
      note mill warmed up at this point
      note the last 1%- 5% of these speeds took a few minutes to achieve.
      Note some more grease was expelled again.

      Comment

      Working...
      X