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Posted by elitkh on April 2, 2006, 5:08 am
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for example pls take a look of these 2 encoders:
AA. TS5212N500 2000(4 poles) : OIH48-2000P4-L6-5V
- Model name : H48-8-2000WL4
- Outter Dia : 48mm
- Bore size : 8mm
- Resolution : 2000P/R
- Output form : Line driver type(5VDC only)
- Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
- Calble length : 1m without connector
- No. of Pole : 4
BB. TS5212N510 2000(6 poles) : OIH48-2000P6-L6-5V
- Model name : H48-8-2000WL6
- Outter Dia : 48mm
- Bore size : 8mm
- Resolution : 2000P/R
- Output form : Line driver type(5VDC only)
- Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
- Calble length : 1m without connector
- No of pole : 6
these are Tamagawa encoders.
why is it important the numbers of polls?
i asume its connected to the hallsensors but how?
thank you
eli
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Posted by Steve Lusardi on April 2, 2006, 12:23 pm
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The 4 poles represent 4 signals that arrive at a 90 degree phase angle A,B,
U, and V nornally. Z is normally the 0 degree index pulse and W is the 180
degree index pulse. On a 6 pole motor signals arrive with a 60 degree phase
angle A,B,U and V. Again Z and W are Index pulses. What this explanation
does not tell you is the duration length or the duty cycle of the pulses.
There will be a published truth table for these motors Simplistically, you
can consider these to be single phase(4 pole) and 3 phase (6 pole). Normally
these encoders will be optical, not hall effect. If you have some of these,
I need a couple if the price is right.
Steve
> for example pls take a look of these 2 encoders:
> AA. TS5212N500 2000(4 poles) : OIH48-2000P4-L6-5V
> - Model name : H48-8-2000WL4
> - Outter Dia : 48mm
> - Bore size : 8mm
> - Resolution : 2000P/R
> - Output form : Line driver type(5VDC only)
> - Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
> - Calble length : 1m without connector
> - No. of Pole : 4
>
> BB. TS5212N510 2000(6 poles) : OIH48-2000P6-L6-5V
> - Model name : H48-8-2000WL6
> - Outter Dia : 48mm
> - Bore size : 8mm
> - Resolution : 2000P/R
> - Output form : Line driver type(5VDC only)
> - Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
> - Calble length : 1m without connector
> - No of pole : 6
>
> these are Tamagawa encoders.
> why is it important the numbers of polls?
> i asume its connected to the hallsensors but how?
>
> thank you
> eli
>
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Posted by Ned Simmons on April 2, 2006, 1:08 pm
Please log in for more thread options elitkh@hotmail.com says...
> for example pls take a look of these 2 encoders:
> AA. TS5212N500 2000(4 poles) : OIH48-2000P4-L6-5V
> - Model name : H48-8-2000WL4
> - Outter Dia : 48mm
> - Bore size : 8mm
> - Resolution : 2000P/R
> - Output form : Line driver type(5VDC only)
> - Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
> - Calble length : 1m without connector
> - No. of Pole : 4
>
> BB. TS5212N510 2000(6 poles) : OIH48-2000P6-L6-5V
> - Model name : H48-8-2000WL6
> - Outter Dia : 48mm
> - Bore size : 8mm
> - Resolution : 2000P/R
> - Output form : Line driver type(5VDC only)
> - Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
> - Calble length : 1m without connector
> - No of pole : 6
>
> these are Tamagawa encoders.
> why is it important the numbers of polls?
> i asume its connected to the hallsensors but how?
>
> thank you
> eli
>
>
I think you're right about the number of poles referring to the Hall
sensors, which should more correctly be referred to as "commutation
sensors." Though Hall sensors are often used to sense rotor position,
especially when they're integral with the motor, any suitable sensing
technology can be used for commutation. In the case of these encoders,
the U,V,W commutation channels are probably just an additional track on
the encoder disc and 3 associated sensors.
The A and B channels are the 2000 line quadrature outputs; the Z channel
is a 1 PPR index pulse.
My assumption is that "number of poles" refers to the number of poles of
the motor the encoder is to be used with. Depending on the motor, amp
and controller you're using, you may not need the U,V,W channels at all.
Note that I'm making some assumptions here, based on quite a bit of
experience with servos, but I'd suggest you try to verify what I've said
before spending a lot of time and money.
Ned Simmons
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> AA. TS5212N500 2000(4 poles) : OIH48-2000P4-L6-5V
> - Model name : H48-8-2000WL4
> - Outter Dia : 48mm
> - Bore size : 8mm
> - Resolution : 2000P/R
> - Output form : Line driver type(5VDC only)
> - Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
> - Calble length : 1m without connector
> - No. of Pole : 4
>
> BB. TS5212N510 2000(6 poles) : OIH48-2000P6-L6-5V
> - Model name : H48-8-2000WL6
> - Outter Dia : 48mm
> - Bore size : 8mm
> - Resolution : 2000P/R
> - Output form : Line driver type(5VDC only)
> - Output signal : A, /A. B. /B. Z, /Z, U, /U, V, /V, W, /W
> - Calble length : 1m without connector
> - No of pole : 6
>
> these are Tamagawa encoders.
> why is it important the numbers of polls?
> i asume its connected to the hallsensors but how?
>
> thank you
> eli
>