Over Current Event Tripping Spindle

[curriergroh]

I'm not sure where to start troubleshooting this problem so I'm asking for guidance.

Machine components:
Hitachi VFD X200
Keling 2.2kw spindle
building power 208/120v wye 3 phase

I am getting VFD trips, which stop the spindle, with error codes E01, E02, E03.
These are 'over current events' when at constant speed, accelerating, decelerating.

When this happens the spindle stops rotating, usually in the material, but the steppers continue causing much crashing and grinding.

I checked setting b012 and it is set at 10 amps on the VFD. It won't let me raise it any higher. I think the spindle would handle 10.5 amps since I am on 208v. There is also another setting in the b group that can decrease the current when it approaches a certain level, but I don't understand it well enough to play with.

It has happened when cutting 3/4" birch plywood with Onsrud bits.
.25" down cut at .35 step down 120 F 10000 S
.25" compression at .72 step down 120 F 13000 S
.375" up cut at .375 step down

What is confusing to me is that it seems random. I cut successfully with these bits, feeds, speeds, but sometimes it just stops and crashes.

[rgammage]

Hello

Please forgive me if any suggestions I make are total rubbish as I do not know your machine nor US wiring.

If this fault is as intermittent as you say I would look for the unexpected ... does the spindle motor have brushes? .... I can see arcing brushes causing odd effects. If not look at the terminations of the cables to the motor especially if you have any gantry or slides ..... I would be looking for loose crimps, loose wiring, wiring damage or any signs of overheating or arcing.

The fact the machine is OK much of the time tells me most of the 'big lumps' are OK.

Good Luck

Richard

[mike_Kilroy]

[QUOTE=curriergroh;1103551
Hitachi VFD X200
Keling 2.2kw spindle
building power 208/120v wye 3 phase

I am getting VFD trips, which stop the spindle, with error codes E01, E02, E03.
These are 'over current events' when at constant speed, accelerating, decelerating.
......I checked setting b012 and it is set at 10 amps on the VFD. .....[/QUOTE]


so to troubleshoot, u need to answer some questions.....

- did this system used to work?
- when did it stop working?
- what does D001 show? this is the actual output current
- what is the full x200 part no? is it rated 10 amps continuous?
- did u set the output voltage to 208 from the default 230v? (a45 or so?


obviously the current draw is too much for the drive.

[curriergroh]

so to troubleshoot, u need to answer some questions.....

- did this system used to work?
- when did it stop working?
- what does D001 show? this is the actual output current
- what is the full x200 part no? is it rated 10 amps continuous?
- did u set the output voltage to 208 from the default 230v? (a45 or so?

1 The system continues to work, but occasionally trips.
2 It has stopped three times, once in the air, once ramping into material, once cutting a straight line.
3 I will post this when I collect the info
4 X200-022NFU
5 I will post this when I collect the info

Chainflex® CF31 motor cable
Keling Spindle

If this fault is as intermittent as you say I would look for the unexpected ... does the spindle motor have brushes? .... I can see arcing brushes causing odd effects. If not look at the terminations of the cables to the motor especially if you have any gantry or slides ..... I would be looking for loose crimps, loose wiring, wiring damage or any signs of overheating or arcing.

I will check cable termination and report back. It is a 3-axis machine. However the last 12 inches of motor cable before connecting to the spindle do not move, the rest of it is in igus cable trays.