On 9/23/22 17:24, gene heskett wrote:
Each brand of vfd seems to have its own setup. But that lf
boost is a tricky one. I don't know
if that invertor shows you the amperage being delivered
but it seems it would be an odd one
if it didn't. What you normally do is read the motors
nameplate for the FLA, Full Load Amperage.
Then set the lf boost to not exceed that.
Yes, I have found that the default current limit is 3 A, my
2 HP motor is rated at 6 A, so that was the reason for the
trips.
If you intend to use it in both directions, quickly as in
rigid tapping operations, the accel/decel
registers are generally set rediculously conservative.
Those can be sped up to almost instant,
but lcnc can still confuse the vfd into tripping.
I have a lowpass filter on the spindle speed value in the
HAL file. This has worked great on my old mill. I did have
to turn off the motor overheat integrator in the old VFD, as
the Bridgeport motors can handle plug reversing. I do 4-40
rigid tapping at 1000 RPM. I will have to figure out how to
do that on the new VFD.
Thanks,
Jon
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