In article , Gunner says...

You can likely use the contacts in the existing switch stacks and
retain the use of the levers. While they are not immediately
intuative, ...

Understatement of the week.

If I were wiring one of these, I would use the fwd/off/rev
lever to run the VFD for those functions. Then I would turn
the high/off/low lever into center-off, momentary switch,
and use the drum switch contacts for that lever into the
VFD control lines, as speedup/slowdown.

Most VFDs allow that kind of two-button fast/slow
speed control programming.

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================