ive had nothing but issues with the motor since I got the machine.
machine is running -
mach3 and smooth stepper
ive installed spindle feedback (rpm sensor)
if I do s3200 sometimes it run 3300 other times it can be as high as 3500, it never used to do this, the speed has been going up over time. when I first got the machine if I did 3200 it would always run at 3150 etc...
when I run the spindle slow, so say I do s1000 then the machine flickers around going from 1000 to 1300 constantly, so my surface finish isn't great. when I put the motor under load it seems to smooth out, but take the load away and speed goes up and down and you can clearly hear it doing so.
checked the main brushes on the sem motor and they are fine and ive checked the brushes at the top of the motor and they are fine.
all thoughts welcome
Triac Motor Issues
Moderators: Martin, Steve, Mr Magoo
-
- CNC Guru
- Posts: 525
- Joined: Tue 14 Nov , 2006 12:12 pm
- Hardware/Software: .....
4 Quatros
3 Oracs
2 Easiturn atc
12 station lathe atc
Mach 3 - Location: Quatroland
Re: Triac Motor Issues
Andy, give me a ring.
Tom in Cardiff.
Tom in Cardiff.
-
- CNC Expert
- Posts: 190
- Joined: Fri 05 Oct , 2012 20:06 pm
- Hardware/Software: Triac Vmc with 6 station ATC
Starmills with ATC
Re: Triac Motor Issues
will do in a couple of hours if that's ok, when im out in the workshop
-
- CNC Guru
- Posts: 525
- Joined: Tue 14 Nov , 2006 12:12 pm
- Hardware/Software: .....
4 Quatros
3 Oracs
2 Easiturn atc
12 station lathe atc
Mach 3 - Location: Quatroland
Re: Triac Motor Issues
that's fine mate.
Re: Triac Motor Issues
Try adjusting the stability pot on the Sprint 1200 drive.
Re: Triac Motor Issues
If the speed is rising for the same demand this would indicate the motor may be becomuing demagnetised.
If the motor runs overspeed to the rating then this would indicate a fault on the motor.
You may be able to still use the motor but you will be taking higher current than normal as the voltage for a specific speed is lower.
The motor will have a speed and voltage rating on the motor plate say 4000RPM 140V.
If the motor runs overspeed to the rating then this would indicate a fault on the motor.
You may be able to still use the motor but you will be taking higher current than normal as the voltage for a specific speed is lower.
The motor will have a speed and voltage rating on the motor plate say 4000RPM 140V.
-
- CNC Expert
- Posts: 190
- Joined: Fri 05 Oct , 2012 20:06 pm
- Hardware/Software: Triac Vmc with 6 station ATC
Starmills with ATC
Re: Triac Motor Issues
still trying to fault find this one, just got a new v3 spindle board so I need to test this