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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