Auger overload

tcncj · Jan 16, 2021

Hello
I have a Hurco VM10i. The chip auger is throwing a overload error.
The overload protection is triggered. When I turn it back on the auger turns for around a minute. And the overload protection is triggered.
I checked for loose wires.
The auger itself isn't jammed
I'm no electrical genius

What could the cause be?

DouglasJRizzo · Jan 16, 2021

tcncj said:
Hello
I have a Hurco VM10i. The chip auger is throwing a overload error.
The overload protection is triggered. When I turn it back on the auger turns for around a minute. And the overload protection is triggered.
I checked for loose wires.
The auger itself isn't jammed
I'm no electrical genius What could the cause be?

You may want to try jogging in reverse. Also, check the cabinet for anything popped or loose.

tcncj · Jan 16, 2021

It moves reverse and forward fine

Guest · Jan 16, 2021

Check the amperage, the motor could have an issue and be drawing too much current. I would also check the voltages it is receiving, a voltage drop will cause an increased amperage draw.

tcncj · Jan 16, 2021

If I measure correct.
Multimeter: one pin on a phase and one on ground I measure around 128V on each phase.
Doesn't seem correct to me?

npinson · Jan 16, 2021

If you can, use a clamp on ammeter to check the amp draw on the phases as well. Then check what the overload is set to

Sent from my iPhone using Tapatalk

Guest · Jan 16, 2021

tcncj said:
If I measure correct.
Multimeter: one pin on a phase and one on ground I measure around 128V on each phase.
Doesn't seem correct to me?

Measure across phases as I assume it is a 3 phase auger, line 1&2, 2&3, and 1&3.

Guest · Jan 16, 2021

Also even if it seems to run fine it could have an issue like a bearing ready to seize causing an excessive drag making the motor work too hard.

tcncj · Jan 16, 2021

Dualkit said:
Measure across phases as I assume it is a 3 phase auger, line 1&2, 2&3, and 1&3.

Yep that's how I did it

Guest · Jan 16, 2021

tcncj said:
Yep that's how I did it

I thought you posted you measured line to ground?

tcncj · Jan 16, 2021

My mistake
lead to lead measures 220v on all combinations

Guest · Jan 16, 2021

tcncj said:
My mistake
lead to lead measures 220v on all combinations

All good there. Can you measure amperage while running?

tcncj · Jan 16, 2021

I'm no expert on this so I just tell what I do haha

Multimeter at 20A
connected in series between 1 lead and the motor
It shows 0,68A
Motor is also rated for 0,68A so that's good I guess?

But it's increasing to above 1,4A and it tripped

Guest · Jan 16, 2021

tcncj said:
I'm no expert on this so I just tell what I do haha

Multimeter at 20A
connected in series between 1 lead and the motor
It shows 0,68A
Motor is also rated for 0,68A so that's good I guess?

It's been running for 5 minutes now without tripping....

Check all leads. Good luck, I need to run to the hardware store. Will be playing electrician, carpenter and plumber during a lull in shop work.

Guest · Jan 16, 2021

One other thought before I split, if that motor is pulling full load name plate amps with the auger unloaded either it is getting tired or there is a mechanical drag on the auger.

tcncj · Jan 16, 2021

Im pulling the motor apart to check if the auger is causing too much drag

tcncj · Jan 16, 2021

No drag.
I can move the auger by hand very smoothly through the reduction.
Bearings are all ok.
But I noticed the shaft was sticking out a bit and a bearing didn't seat properly.
It was sticking out by half its width.
The grease from the reduction leaked into the motor and onto the windings.
I removed the grease from the windings and installed the shaft properly.

The auger is running now to see if it's solved.

tcncj · Jan 17, 2021

it's working now!
thanks for all the help

Auger overload

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