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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Testing servos/Drives
I would like to get some clear idea on how to test components of what
I build. Say, just a servo: can I test it by connecting a small DC power supply to + and - cables and gradually increasing voltage? I should see it run, right? Or, a servo with amplifier: give amplifier power and apply small voltage to the +/-10v command input. Then it should move the servo motor. Right? i |
#2
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Testing servos/Drives
start with this:
http://www.a-m-c.com/content/support/FAQ.html#setup10 lot more good stuff on this site. everything you ever wanted to know about servo motors Karl "Ignoramus8975" wrote in message ... I would like to get some clear idea on how to test components of what I build. Say, just a servo: can I test it by connecting a small DC power supply to + and - cables and gradually increasing voltage? I should see it run, right? Or, a servo with amplifier: give amplifier power and apply small voltage to the +/-10v command input. Then it should move the servo motor. Right? i |
#3
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Testing servos/Drives
On Tue, 08 Jun 2010 13:53:16 -0500, Ignoramus8975
wrote: I would like to get some clear idea on how to test components of what I build. Say, just a servo: can I test it by connecting a small DC power supply to + and - cables and gradually increasing voltage? I should see it run, right? Yes, based on it having two leads, it's just a DC motor. Or, a servo with amplifier: give amplifier power and apply small voltage to the +/-10v command input. Then it should move the servo motor. Right? The AMC amps have an offset adjustment on the command input that make it easy to run the motor without an external command. -- Ned Simmons |
#4
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Testing servos/Drives
On Tue, 08 Jun 2010 15:03:48 -0400, Ned Simmons
wrote: On Tue, 08 Jun 2010 13:53:16 -0500, Ignoramus8975 wrote: Or, a servo with amplifier: give amplifier power and apply small voltage to the +/-10v command input. Then it should move the servo motor. Right? The AMC amps have an offset adjustment on the command input that make it easy to run the motor without an external command. BTW, with no feedback or load, the motor may behavior may be unpredictale if the amp is set for current (torque) mode. -- Ned Simmons |
#5
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Testing servos/Drives
On 2010-06-08, Karl Townsend wrote:
start with this: http://www.a-m-c.com/content/support/FAQ.html#setup10 lot more good stuff on this site. everything you ever wanted to know about servo motors Yes, awesome, I figured out the inhibit concept, it is great. I can inhibit movement beyond limit switch, but still pull in other direction. i Karl "Ignoramus8975" wrote in message ... I would like to get some clear idea on how to test components of what I build. Say, just a servo: can I test it by connecting a small DC power supply to + and - cables and gradually increasing voltage? I should see it run, right? Or, a servo with amplifier: give amplifier power and apply small voltage to the +/-10v command input. Then it should move the servo motor. Right? i |
#6
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Testing servos/Drives
Ignoramus8975 wrote:
I would like to get some clear idea on how to test components of what I build. Say, just a servo: can I test it by connecting a small DC power supply to + and - cables and gradually increasing voltage? I should see it run, right? You mean just testing the motor? Yes, a DC supply or a D cell will work. Or, a servo with amplifier: give amplifier power and apply small voltage to the +/-10v command input. Then it should move the servo motor. Right? If the servo amp has available +/- 15 V output, you can connect a pot across those outputs and wire the + command input to the pot's wiper. Make sure the pot is centered before enabling the servo amp. Jon |
#7
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Testing servos/Drives
Ignoramus8975 wrote:
I would like to get some clear idea on how to test components of what I build. Say, just a servo: can I test it by connecting a small DC power supply to + and - cables and gradually increasing voltage? I should see it run, right? If you are talking about the dc motor that will work. Depending on the voltage you need, a dc welder can be a good source of power to test high current dc motors. Or, a servo with amplifier: give amplifier power and apply small voltage to the +/-10v command input. Then it should move the servo motor. Right? Sure. You can make a battery box to provide an adjustable 0-9 vdc command signal by attaching a 9 volt battery to a 10K linear taper potentiometer. Rather than use a number of words describing it, I'll just link a picture of a voltage divider. http://upload.wikimedia.org/wikipedi..._with_load.png Wes |
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