Ok, Here is my attempt at taking amp readings.
I attached my AC Clamp Meter to lines A1 and A2 going from drive to motor.
Running no load: 4.9
Original Pot Setting: A1=41.9 & A2= 42.6
Full Pot Setting: A1= 47.3 & A2= 51.5
At full Pot Setting it trips the breaker on the drive when it stalls.
On 7/27/2021 1:06 PM, Earl Weaver wrote:
On 7/27/2021 12:13 PM, andy pugh wrote:
I skimmed the drive manual looking for any info on tuning the velocity
loop, but could ne see anything.
However: Are you sure that your tachometer is set up right? (I think
it probably is or speed would be way off)
And is the current limit pot set to suit your actual motor?
The manual that I linked is not an exact match to my drive. I searched
but did not find an exact match , but this one is close.
Yes, I believe the tach is set up right. I can get the speed control
to work good. It's just the power at low RPM is the biggest problem.
Your description from an earlier post describes it perfectly.
"I would expect a speed-controlled loop spindle to feel springy. As you
move the chuck faster than commanded speed the drive will reduce the
current to try to slow the spindle (maybe even reversing in to
braking)
Then as you wobble it back the other way it will take some time to
wind up the other way."
I will check the current limit pots to see if that is limiting the
torque.
**Earl Weaver
Email: [email protected] <mailto:[email protected]>
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