Thread: SpeedMaster VSD

Hi Cliff
Nice kit you've got there, should be able to do some serious turning now....
I had a quick look at the VSD specs on the WEG website, do you have the dynamic or DC motor braking option available on the drive? Could be useful when coupled with an emergency stop.
Cheers

Yup, the ramp up & ramp down speed/time can be programmed into it.

I am going to put mine on my big home made pedestal lathe.... see this thread.

Note. You have to be careful with the ramp down time, if you set it too quick & you have a heavy piece on the lathe, the spindle will stop so quickly that the chuck can unscrew if it doesn't have some way of locking on.

Originally Posted by Cliff Rogers

Marlin Coast Motor Rewinding will help with the programming & I can do the wiring myself.

Cliff if the Weg manual is as good as the Hitachi then I think you will have no difficulty programming it yourself.

If you know enough to wire it up, then programming should be no obstacle.

Greg

One of the things that needs to be investigated with the single phase to three phase units is the loss of available horsepower. Very often with this type of conversion the HP can be limited to around 87% on nameplate rating.

Originally Posted by Cliff Rogers

I got a WEG CFW08 drive & a WEG 2.2Kw (3HP) 6 pole, 3 Φ motor for just a bit under $1100.

The 6 pole will give me more torque that the 4 pole.

Marlin Coast Motor Rewinding will help with the programming & I can do the wiring myself.

I'll post some pics when I have something to show off 'cos at this stage, it is still sitting in a carton.

Weg Australia

Hi Cliff

How is your set up going? Anything to show us or comments on how it goes?

Cheers

Nup, sorry, Shed still doesn't have power on yet.

Thanks Cliff, slightly frustrating, I would imagine...

I am getting slightly P'd off for a number of reasons about the Speedmaster variable speed drive I have on order and am now considering chaning to a Eurotherm model 650V which is a sensorless vector unit and gives better low speed torque and speed control, see Eurotherm 650 AC VSD
Cheers

Here is an option I am investigating - no need to change the motor

Anacon Systems, Inc.- OPTIDRIVE E2 for Single-Phase AC motors.

Regards
woodcutta

Hi Woodcutter, that's an interesting alternative, I wonder how long they've been around and what people's experience is with them.....
From reading the manual on the website, it appears that when starting, the drive needs to speed up the motor to maximum speed briefly (presumably to produce a credible level of starting torque) and then ramps down to the selected speed. This could be scary when a large unbalanced blank is in the chuck..

GG

Parameter 33 adjusts the set time for the boost. this can be set to 0.0 to disable it.

ABB also make a single phase vsd. I have a mate that works for the drive section and he is looking for a "trial" drive for me to test.

woodcutta