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CNC Mitsubishi Meldas 3 (=Traub MX8).
Dark screen , though the LED "monutor" on the circuit board for the monitor blinks green. When I turn off CNC, the CRT blinks white for a second. On the...

Dark screen , though the LED "monutor" on the circuit board for the monitor blinks green. When I turn off CNC, the CRT blinks white for a second. On the processor card of CNC (MC161-1) light D.AL...

Dark screen , though the LED "monutor" on the circuit board for the monitor blinks green. When I turn off CNC, the CRT blinks white for a second. On the processor card of CNC (MC161-1) light D.AL...

Hello Friends,
We are looking for some obsolete Current Detectors (or equivalent): LE-00 and
Voltage Detector (or equivalent) LE-R2 (both manufactured by NANA Electronics Japan),
Used in Fanuc...

Hello Friends,
We are looking for some obsolete Current Detectors (or equivalent): LE-00 and Voltage Detector (or equivalent) LE-R2 (both manufactured by NANA Electronics Japan),
Used in Fanuc AC...

Thank you mr. Kilroy for your advice,

I had to say that I measured the regenerative resistor (it's 16 ohms just as it's writen on it, and no chortage to its case).
I measured the...

Hello Friends,
I would like to ask if someone could tell me (even theoritically) if it is permissible, or it's dangerous
for the drive to work for some time without regenerative resistor.
Our...

Hello friends,
We have some problem with our spindle drive Fanuc
(listed in thread: http://www.cnczone.com/forums/servo-motors-drives/271526-asking-advice-fanuc-spindle-drive-a06b-6052-a.html).
...

I would like to ask if someone could tell me (even theoritically) if it is permissible, or it's dangerous
for the drive to work for some time without regenerative resistor
(while we trying to...

Hello Friends,
.
Our drive Fanuc A06B-6052-H0004 (small model3) recently became to issue full voltage to the regenerative resistor simultaneously with rotation in any of two directions. The...

Hello Friends,
Heidenhain 135 ST, software 214 383 (common drive with backlash compensation), in MDI and Auto mode doesn’t issue VCMD (analogue output to the drive).
After a minute there appears...

Thank you very much, friends! Wiz, absolutely correct advice.It helps me... Be healthy you two!

Hello friends,
OKUMA OSP500L-G.
Could someone send me some tab of user params or tell me the param that enables tailstock?

Dear Mr. Kilroy,
May be I'm not correct when calling "REGEN" about that group of 6 more other transistors on the 3-phase suply side. I will send you the diagramm of that unit.

"they are line regen so have 6 on the input side also" Yes I think it was such case: Frenic 5000 V2. (15kw). Insteadn of the diodes in your image there are 6 trans. called TS, and other called TM (I...

Thank you Mr. Kilroy
I think I manage to consider why I have brought myself.
Last case we handle with more powerful AC unit “FRENIC” of FUDJI electric where they have 12 power transistors. (But...

I wanted to say that I supposed that if there’s only one open transistor, it couldn't influence in two directions (M3 and M4). I supposed that only one open transistor would influence only in one...

Thanks for the prompt about rotating by hand, it's realy tricky, Mr. Kilroy,

I’m not arrived to the machine yet, I’m away for a couple of days. Meanwhile something appeared in my mind: I remind...

Thank you for contribution Mr.Kilroy,
Yes, I have tried to order slower speed than 100rpm. (S50, S30) and system receives the command, but there wasn’t obvious difference (I mean the number of...

Some more information from my investigation on our AC spindle unit.
I measured all fusses (there are 7 fusses 0,3A on the firing plate) – no problem fuse.
Also, I measured Transistor module : each...

Hello friends,

Here I am on the machine with Fanuc spindle unit A06B-6052-0004 and it gives ALARM 12 (8+4) (High current DC Link) when starting M3 (M4) S300 and above. If I start S100 it begins...