Need Help!- Power problem perhaps

[thesaurian]

I just had a conversation with a local electrical worker and he suggested that maybe the problem I am having with my mori lathe is that the incoming power is maybe inappropriate for the lathe. We have no idea ourselves as to what is needed. Please advise!!

[Al_The_Man]

It should be stamped on the MTB's Specification plate on the machine?
Al.

[underthetire]

Since my crystal ball is broken, can't help. Mori has been building cnc lathes since the late 60s, so kinda hard to say without info.

[thesaurian]

Our incoming power is 480 v 3 phase, stepped down to 220 via transformer. The serviceman was referring to the power being "Y" vs star. Any thoughts?

[Al_The_Man]

All you need is 3 phase at the required voltage per phase.
Y Is Star, he probably mentioned Star (Y) or delta, otherwise known as Wye - Delta.
This is the configuration of the transformer secondary windings.
Either will work at the correct voltage as you should not need a neutral.
If this is a Mori with Fanuc 6 control, the phase sequence has to be correct.
Al.

[underthetire]

All moris are phase sensitive, coolers, coolant pumps, and hydraulic systems need the correct phase. What is wrong with the mori? That's what we need.

[Al_The_Man]

That true, but in the case of the SCR drives, if a phase rotation meter is not used before hook up, the velocity control unit, (servo's), misconnection will cause a blow out of F1.F2,F3.
Ref: 2.2.4 Fanuc 6 installation manual.
Al.

[thesaurian]

This is an 89 Mori with 220 3 phase coming from a step down transformer. After working the weekend on double checking parameters, etc, I have the chuck opening and closing, the tailstock moving in and out, the lube pump oiling, but the machine will not move in any axis. It called up a OT032 NEED ZRN(ABS PCDR).
I was able to get ris of the alarm by changing para 1815 but am wondering if it referred not to a need to be zeroed but to the encoders not reading what the machine did. (based on internet searching.) I would like to be able to move each axis over the limit sensors, but without being able to move, it is kinda hard.
When we bought the machine, it came on transport, and there wasn't any blocking to support the turret, as they reccomend in the manual.
The positioning on the screen reads a few thousandths (.0023) on the x-axis.

Please and thanks in advance, the help I have been recieving over these forums is keeping me sane!!

[underthetire]

Yes, you simply lost the zero return, no power issues. Axis have battery backup for position. On a 89, i'm guessing MFt4 control (ot ), or ?? There are procedures for it.