Re: [Emc-users] In what the reason?

Hi Jan. Mechanics of an axis Y in a good condition. Plugs are a little melted off. The powersupply to the Y-axis has its own powersupply. Thanks a lot ,Andrey -- Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(

Re: [Emc-users] In what the reason?

What type of spindle / ballscrew are you using? Is there any play in the nut? Is there any play in the thrust bearing? When you move the table by hand, does the mechanical movement feel smooth with similar force needed in both directions? What is the state of the gibs? Are they locked up properly?

[Emc-users] In what the reason?

An option is to try a light bulb in series with the motor. Eg With 24 volt motor @ 50 watts, use two 12 volt halogen bulbs. That way if the motor stalls the bulbs light up and reduce the power to it to a 1/4. Under low load, the bulb is a low resistance and all should run well, under high load i

Re: [Emc-users] In what the reason?

Thanks Jon,thanks Stuart.I am grateful for your answers. Today the servoamplifier failed) Now there is an additional information for speculation. I will mandatory use your recommendations. The idea of excitation of system the servomotor + servoamplifier is very probable. Once again many thanks,A

Re: [Emc-users] In what the reason?

Andrey wrote: > Hi! All thanks for answers. I can make some explanatories to this problem. > Milling mashine has 3 axes. The motor on axis Y Fails only. > All of axes have identical servoamplifiers and motors. > The motor on axis Y does not vibrate and does not rustle, all 3 axes have > identical

Re: [Emc-users] In what the reason?

Andrey, If you do not have a circuit breaker on the wiring to the servo motor you should put one in. At least on the axis that is burning the motor. You would eliminate the burned motors and still be alerted to the motor heating problem as the circuit breaker would trip. This should allow you t

Re: [Emc-users] In what the reason?

>What condition are the bearings in? Is it possible that the motor >mounts are misaligned, leading to excessive bearing wear, and hence >motor stiffness? Hi Andy. Motor mounts and bearings are in good condition, because all these parts new. The mechanics is completely identical on axes X and Y, b

Re: [Emc-users] In what the reason?

On 15 October 2010 10:27, Andrey wrote: > I do not think, that a problem in the mechanics because mashine is full servo > and at any mistakes of movement there is a mistake and motors are > disconnected. What condition are the bearings in? Is it possible that the motor mounts are misaligned, l

Re: [Emc-users] In what the reason?

Hi Ulf. Thanks for your answer. I think, that the reason is electric here. I disassembled the broken motor, also have found out that windings And lamellas of the motor are serviceable. I have seen that on windings of the engine there was an over current because isolation of crosspieces between w

Re: [Emc-users] In what the reason?

Hi Andrey There has to be a reasen why the motor overheats. It's either mechanically or electrically. If you can eliminate electrical sources (amp matches motor, weired accelerations or vibrations) then there should be mechanical ones. Did you disassemble the broken motor to find out why it overh

Re: [Emc-users] In what the reason?

Hi! All thanks for answers. I can make some explanatories to this problem. Milling mashine has 3 axes. The motor on axis Y Fails only. All of axes have identical servoamplifiers and motors. The motor on axis Y does not vibrate and does not rustle, all 3 axes have identical PID adjustments. Ulf, th

Re: [Emc-users] In what the reason?

Hi Andrey What parts did you do when the motors died ? Did you use the same program? Or Was it the same kind of load or the same kind of movement? Maybe your amp is not propery matched to the motor and on some movements/loads emits way to much ampers? What kind of cooling do you have on the mo

Re: [Emc-users] In what the reason?

On Thursday, October 14, 2010 04:33:49 pm Andrey did opine: >Hi everybody. > > I have such situation: PCI card I/O Sansoray + > Servoamplifier AMC + servomotor Magmotor. All it can work well in a > current of 1-2 weeks, then at any moment motor is suddenly overheated > ( in time 5-10 min)

Re: [Emc-users] In what the reason?

Is there any vibration when motor overheats? Are you using velocity mode? io On Thu, Oct 14, 2010 at 1:50 PM, Andrey wrote: > >   Hi everybody. > >  I have such situation: PCI card I/O Sansoray + > Servoamplifier AMC + servomotor Magmotor. All it can work well  in a current > of 1-2 weeks, the

[Emc-users] In what the reason?

Hi everybody. I have such situation: PCI card I/O Sansoray + Servoamplifier AMC + servomotor Magmotor. All it can work well in a current of 1-2 weeks, then at any moment motor is suddenly overheated ( in time 5-10 min) and dies. I replaced 2 motors in a current of month. The servoamplifi