If you are not getting the yellow indicator light when in reverse on the shaper, then that usually means you have something open in the e-stop string. Check all the microswitches, make sure the steel cover over the blade area is in the right place. You have multiple switches on the planer section, also make sure the mushroom shaped e-stop switch is twisted and pops out.
If nothing physically looks wrong, you will have to get a continuity tester and start checking for where the e-stop string is open.
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I¡¯ve got a 2005 CF741SP with the 7.5 HP 3-phase motors hooked up to a PhasePerfect converter. I¡¯ve been using it for years in the same configuration. Everything was functioning normally as I planed a piece of wood and made a few cuts on the saw. When I tried to use the saw for another cut, it wouldn¡¯t start. I thought there might be an offcut jamming the blade, but that wasn¡¯t the case. I checked all the limit switches and they seemed fine. I twisted the function selector knob a few times, thinking it might not be making contact. When all that failed, I used the power switch to turn off the CF, then turned off the phase converter. I waited for several minutes and tried again, to no avail. I tried again this morning with everything off overnight, and no change.
The phase converter is working, because my RL160 and bandsaw work just fine. On the CF, the digital readouts light up, but the only thing electrical functioning is the up and down motion of the shaper. Selecting reverse for the shaper does not illuminate the yellow light. The PowerDrive for the planer does not work.
I opened up the electrical panel on the CF and can see the green light on the Lenze VFD is on. When the CF main power switch is turned on, I get the usual high-pitched squeal and the humming of the VFD for a minute or two. The VFD does seem to hum (sounds like a fan) for longer than it used to on startup.
As you can tell from the above, I¡¯m not much of an electrical expert. I¡¯d appreciate some insights and suggestions as to what to check. I¡¯m guessing that something isn¡¯t right with the Lenze VFD, or maybe the function selector switch might be bad.
I can certainly give Felder a call, but I thought I¡¯d run this by the group. I know that others have had similar situations in the past, but I¡¯m having difficulty finding the old threads.
Thanks for any help.
Thomas
