On Wed, 29 Jun 2016 08:41:41 -0700, Larry Jaques
wrote:


1) the spindle ran fine on the last job, and was stopped properly before
turning off the machine.
2) on the FIRST power-up of the VFD - BEFORE ATTEMPTING TO START THE
SPINDLE - the VFD threw the fault indicated earlier. No amount of
resetting, either by keypad or application/removal of power will clear
the fault.

I was down at my buddy Glenn's yesterday and he had recently had to
replace his VFD on his drill, a large, geared VSR he uses for drilling
and tapping directly.

The 1989 Hitachi VFD was working fine one day and released lots of
magic smoke and fire the next, vaporizing several traces on the
circuit board as it went. It also blew the labels and plastic bits off
the power transistors.

Ive got a spare Hitachi, NOS in the box. but IRRC..its only 3hp

Gunner

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