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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Dish motor less wear and tear
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<blockquote data-quote="jeallen01" data-source="post: 1024634" data-attributes="member: 176704"><p>FWIW, the motor is designed to run best at its rated voltage (36V) and at 66% it will have far less torque because the current will be proportionately lower. Therefore it will run slower and it might struggle to start the actuator moving, especially if the actuator mechanism is a bit dirty/rusty, and so might actually run hotter, or even stall (which will do it no good!), because of that. Also, because of the lower motor torque, it might not actually be able to drive the actuator to the ends of its travel = reduced scanning arc.</p><p></p><p>However, you could also trying running it at around 30V.</p><p></p><p>Also remember that you will need some form of voltage reduction circuit - could be a simple resistor network (large wire-wound resistors) but a semiconductor regulator would probably be better, especially if that has a voltage control which can be altered so that you can experiment to find the lowest voltage at which the actuator moves smoothly.</p><p></p><p>Final thought, it might even be worth running the actuator at a little <em>more</em> than 36V as that would give it more torque and so it would struggle less at the extremes of the scan arc (especially if the supply cables are long and so there is an appreciable voltage drop along them - but that means that you would need a voltage step-up circuit instead of a reduction circuit.</p></blockquote><p></p>
[QUOTE="jeallen01, post: 1024634, member: 176704"] FWIW, the motor is designed to run best at its rated voltage (36V) and at 66% it will have far less torque because the current will be proportionately lower. Therefore it will run slower and it might struggle to start the actuator moving, especially if the actuator mechanism is a bit dirty/rusty, and so might actually run hotter, or even stall (which will do it no good!), because of that. Also, because of the lower motor torque, it might not actually be able to drive the actuator to the ends of its travel = reduced scanning arc. However, you could also trying running it at around 30V. Also remember that you will need some form of voltage reduction circuit - could be a simple resistor network (large wire-wound resistors) but a semiconductor regulator would probably be better, especially if that has a voltage control which can be altered so that you can experiment to find the lowest voltage at which the actuator moves smoothly. Final thought, it might even be worth running the actuator at a little [I]more[/I] than 36V as that would give it more torque and so it would struggle less at the extremes of the scan arc (especially if the supply cables are long and so there is an appreciable voltage drop along them - but that means that you would need a voltage step-up circuit instead of a reduction circuit. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Dish motor less wear and tear
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