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Author Topic: Panasonic servo drive help  (Read 61803 times)

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Re: Panasonic servo drive help
« Reply #200 on: May 07, 2013, 06:54:25 PM »
Definitely a new thread (since it's a different kettle of fish) would be my vote. ;D
Milton from Tennessee ya'll.

Offline Chaoticone

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Re: Panasonic servo drive help
« Reply #201 on: May 07, 2013, 10:00:02 PM »
I'd start a new thread Rick.

Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!

Offline rwf71

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Re: Panasonic servo drive help
« Reply #202 on: May 07, 2013, 11:28:18 PM »
That's what I figured guys, Thanks for the help at getting the panasonic drives sorted. Now on to the next hurdle, hope to see ya there!

Rick
Re: Panasonic servo drive help
« Reply #203 on: November 28, 2014, 07:19:19 AM »
 I am building the mill and and bought a Panasonic servos (Minas-S series). Now I can turn the motor out Mach3.
Now I have made these settings:
Parameter #42  -3
Parameter #44  - 2500
Other settings are default .
Kernel speed - 35000Hz
Steps per:  2500 count*1.5 reducer/5mm ball screw=750



Velocity : 1000 mm per min (In this case, I do not have errors, but if I increase the speed to 2000 mm per min error appears).
For these settings, engine speed is 3000 rpm (measured by a tachometer).
But I'm not sure that these settings are correct. For higher speeds doI need a controller similar SmoothStepper?

What settings should I get?
Thanks!
Andrey
« Last Edit: November 28, 2014, 07:28:54 AM by Andrey67 »

Offline Hood

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Re: Panasonic servo drive help
« Reply #204 on: November 28, 2014, 01:27:33 PM »
With the increase in RPM the pulse rate required will increase. There are two ways you can get round that, first is you can set a gearing in the servo drive so that for example 1 pulse from Mach will be seen as 4 pulses by the drive. I personally am not a fan of that method as it can lead to slight cogging effect at very slow speeds.
The other way is to use an external controller that can handle high pulse rates. As you mention the Smoothstepper is one.

Hood
Re: Panasonic servo drive help
« Reply #205 on: November 28, 2014, 04:04:44 PM »
Now I use the servo without a mill. And the velocity 1000 mm/min is the calculated value. Physically I was able to measure the turnovers of the motor only. But I see the discrepancy.
Calculate:
Velocity max - 1000 mm/min is set on Mach3.
1000/5 mm = 200 prm of ball screw
And then  200*1.5=300! prm of servo motor
But in fact it is 3000 prm !

In what settings I made a mistake?

As you mention the Smoothstepper is one.
Which controllers can be used in addition?

Andrey

Offline Hood

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Re: Panasonic servo drive help
« Reply #206 on: November 29, 2014, 06:27:38 AM »
Your steps per unit, assuming you have no electronic gearing set in drive, are
2,500 encoder count x 4 for quadrature = 10,000
10,000 x 1.5 gearing = 15,000 pulses per screw rev
15,000 / 5 pitch = 3,000 steps per mm.


Controllers that can pulse approx 4MHz
CSMIO/IP-S  (4mhZ)
Hicon (not sure but prob 4MHz)
Kflop  (not sure but prob 4MHz)


There are probably many more but a few controllers that can pulse approx same as the PP are (cleaner pulse than PP though)

 CSMIO/IP-M at 125KHz pulse
UC300 at 100KHzd.

Hood
Re: Panasonic servo drive help
« Reply #207 on: November 29, 2014, 03:02:27 PM »
Hood,

Thank you!
Re: Panasonic servo drive help
« Reply #208 on: January 20, 2015, 10:40:58 AM »
Your steps per unit, assuming you have no electronic gearing set in drive, are
2,500 encoder count x 4 for quadrature = 10,000
10,000 x 1.5 gearing = 15,000 pulses per screw rev
15,000 / 5 pitch = 3,000 steps per mm.

I bought a Ethernet SmoothStepper and returned to the settings of the servo. And I have a problem again.
If I set 3,000 steps per mm, the servomotor rotates more than 3000 rev per min (this is above the maximum) and the servo driver indicates an error, the motor stops.

What's wrong again?
Re: Panasonic servo drive help
« Reply #209 on: January 21, 2015, 02:02:18 AM »
I think the problem with electronic gear. But what parameters should I adjust?
What parameter №44 2500 or 10000 ?