I don't have any specific application for a Hybrid servo but I'm thinking about trying them on the next build I do and had a question about positioning.
I understand that the encoder on the hybrid servo will keep track of it's position and help to not lose steps under load but what happens when you turn the power off and the motor turns? Will I still need to have position sensors located somewhere so the hybrid servo can home itself after powering back on?
I ask because normally I just add position sensors(Proximity/Hall sensor)to my projects and tell the regular stepper motors to run to sensor and stop, if I can achieve that with the hybrid servo without the position sensors I thought I might use them but if I still need to add sensors then I won't.
Thanks for any insight.
I guess you will have to answer your questions yourself, since you have the documentation and we don't.
Paul
What's a hybrid servo? How about posting a link to the specification of an example?
Steve
I wasn't looking at anything in particular for a motor just trying to understand other considerations if I went that route.
Here is a spec sheet of one, they are also called closed loop steppers.
23E1K-12.pdf (216 KB)
How about a spec sheet that relates to the question you are asking!
Paul
- Encoder Specification
- Output Circuit Type: Differential type
- Output Signal Channels: 2 channels
- Supply Voltage Min: 5V
- Supply Voltage Max: 5V
- Output High Voltage: ＜4V
- Output Low Voltage: ＜1V
The CPR is 1000
output signals 2
Is this what you are looking for?
I'm not trying to be difficult, I just thought I was asking a generic encoder question and how they kept track of things during power cycles.
I don't see anything else to grab on the stepper motor site.
To begin, your first assumption is wrong: "I understand that the encoder on the hybrid servo will keep track of it's position and help to not lose steps under load". The encoder ONLY gives you step movement information. Your program has to keep track of what they mean for servo rotation and position. And yes, on power off, all those things start at zero, again.
Paul
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