Les, W2LK said:
The OR2800DC runs on 30-47VDC. Polarity determines rotation direction
and voltage determines speed.
If the control box is smoking, there is probably a stray wire strand
shorted in the control cable somewhere.
I would think that the likelihood of a short in the rotator itself is low.
Pins 1 & 2 on the rear of the controller are the turning voltage.
Pins 5 & 6 are around 10V, low current, used for the pulse counter and
shouldn't be a problem.
Recheck the controller cable connections for stray strands or cracks/cuts.
A DC motor should turn (slowly) on well under the rated operating
A short in the 'control wire' will not cause smoking. The reed switch
in the rotor SHORTS terminals 5 & 6 in normal operation; shorting
and opening those terminals is how the control box determines
the location of the antenna (counting pulses).
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