Member postings for Chris Hembry

Hi Dave,

Thread is 10mm x 1.5mm pitch trapezoidal IIRC. As you say, tightening the toolpost is a major cause as it forces the topslide to bend, tightening the gibs up. A very thin shim washer between toolpost and topslide would help to reduce that.

Regards,

Chris

Hi Dave,

I had exactly the same problem on my 220, and as you found Warco were of no use (in fact they totally ignored me).

I ended up making a tap to suit which kind of worked well enough to solve the problem, but I will make another better one next time.

Perhaps I should invest in a tap as this is, or will be a common failure in the future.

Regards, Chris

Just a thought : since motor is moving, check jacking bolt is actually tight (M8)

Hi Ian,

Pivoted horizontally in the middle, with a jacking bolt on top right corner. Motor foot may also be fitted on slots on the mounting plate, but not checked that.

Chris

Hi Dave,

According to the manual:

U1 = Switch 2
U2 = Switch 4+6
V1 = Switch 5+11
V2 = Switch 3+7
W1 = Switch 8+10+11

If you need any more info let me know

Regards, Chris

Dave

Have sent pm

Sorry Martin, reply was directed at Andrew.

Chris

Martin,

You need to connect the motor in delta to give full power on 240V.

Between any two phases there will be only one winding so it will see the full 240V. In star you have two windings between any two phases so each will see half the supply voltage.

Regards,

Chris

Hesitated to reply on this one as it is not recommended to have switchgear between the motor and the inverter. However, if you always switch the suds on or off while the main motor is stopped you will have no problems whatsoever. The inverter will not see that there are two motors connected to it.

I have a M280 CNC where the coolant can be computer switched via a 3ph contactor. Switching on causes no problems but switching off occasionally causes the inverter to trip out and show an overcurrent error. I guess I could alter the parameters to allow the fault but since switching the coolant off usually precedes switching off the spindle, no real problem occurs.

You can use an inverter in star or delta but if the motor is not changed over it will be running on 240V per coil instead of 415V and you will thus lose a large amount of power.

Regards,

Chris

Edited By Chris Hembry on 14/02/2012 18:39:43