Sigh, resetting the drive to defaults cured the reverse issue. No idea
what setting could have been set to cause some sort of a reverse bias or
?? issue.
On Sun, 20 Aug 2017 03:40:56 -0400, David Berndt <[email protected]>
wrote:
I'm having some issues commissioning my HY VFD. 4kw unit driving a 5hp
3450rpm motor at 30hz max frequency (temporary 2 pole motor, 4 pole
motor is in the mail). Works great in "forward", but when it accels in
reverse it trips out and throws an E.OC.N error. Which appears to be an
over current error.
I've flipped 2 leads to the motor, reversing the physical rotation and
it still works great in vfd "forward", proving that the motor and
mechanical aspects work in both directions. But the VFD does not. Accel
times are quite conservative/slow. Problem happens about 1 second into
acceleration. No clue.... There don't seem to be any relevant settings.
Problem happens regardless of control method, modbus or operator panel.
Unrelated, but wow, at low speeds this VFD seems to throw off a ton of
interference. The symptom I've noticed is that my usb mouse connected to
the PC in the control cabinet that also houses the VFD basically gives
up on life if the motor is running below 15hz. USB dongle modbus was
fairly impacted as well until I grounded the cable shield to the pc case.
Just to make this slighlty more on topic. Is there a config somewhere
for maximum spindle RPM? With the drive configured correctly it won't
overspeed the motor, but it would be nice if the software was aware of a
top end for spindle speed as well.
Thanks,
Dave
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