Motor's temperature limits.

[sotos]

Hi

I have a question regarding the temperature of the motor of my machine (Super X3). This machine is currently used for aluminum milling and for this purpose is running at around 3000rpm. The problem is related with the temperature of the motor that I thing is getting quite high after 30 minutes of operation. In this case you can't touch the housing of the motor for more than some seconds and the display is getting black as a result of this high temperature (same as the case of any LCD after you leave it for a long time in the sun)
Is there any actual problem as a result of this happening or it is normal? Are there any limits regarding the rate of spindle speed to the operation time?

[sotos]

No reply after a week... No one in this group experience any similar problem with the motor and the display?

[dafowfidy]

Dang, well I have not experienced that problem yet but, I have not ran my machine under a load for a extended period of time yet either. Is the heat coming from the motor? Possibly is your spindle bearings set too tight and getting hot?

[Legion99999]

It was explained to me that these motors were designed to run at a high tempature.

I hooked up a 120mm computer fan (before i knew that they could handle it). To provide extra cooling and have not had any discoloration problems, i left it hooked up and i think that has prevented me from having simlar problems since i run mine from 8 to 10 hours a day. Might wannt to try that.

Legion

[sotos]

Just thinking where I could put a fan to solve this problem. Perhaps you put it on the bottom of motor's housing to push the air from the opening under the motor? What you have done?

[Flatline's Up!]

sotos: IMHO that's a band aid and won't fix the real prob. I'd Email the folks at Syil and walk them thru the prob and get them to offer you the real fix.

[Old Megawatts]

Sotos,

Here are the specifications for the Super X3 Motor:
Model ZM-W92-1000A
110 v 3500 RPM Insulation Class F
12 A 1000W Inclosure 1P44
Main Supply: Blue - U / Brown - V / Red - W / Green - FG
Control Supply: Red (S+) Black (S-)
Yellow - SA
Orange - SB
Brown - SC

In my book, Class F insulation is listed having a temperature classification of 155 deg. C or 311 deg. F.
The motor is totally enclosed but not fan cooled.

OM

[SyilAmerica]

The vents on the bottom and top of the motor enclosure provides adequate circulation for motor cooling.

[sotos]

Thanks for the informative answers. It looks that motor capabilities are quite higher and with in the operational limits. How ever what had trigger my attention was actually the black colour of LCD as a result of temperature. Is there any possibility to damage it, or it is not something important to certain about?

[Old Megawatts]

Sotos,
I don't know what the maximum temperature for the LCD would be but as the readout is pretty much in the same chamber as the motor, I'm sure that it gets pretty warm. I don't think it will stand as much heat as the motor will. As I'm no expert in that area, I will leave that answer to someone more knowledgeable.
I haven't had my machine very long and haven't done any large jobs with it yet so my readout is still in good condition.
OM

[SyilAmerica]

We do have units in production environments that run multiple shifts. I have noticed when I run a program the last over for five hours that the LCD back does get a little dark from heat. However, they steal continue to function so I don't believe that it is an issue.

Also, the LCD is in the same chamber at the ventilation and access holes are remote from each other so I don't think there is much he transfer from the motor compartment to the LCD.

[kreutz]

We do have units in production environments that run multiple shifts. I have noticed when I run a program the last over for five hours that the LCD back does get a little dark from heat. However, they steal continue to function so I don't believe that it is an issue.

Also, the LCD is in the same chamber at the ventilation and access holes are remote from each other so I don't think there is much he transfer from the motor compartment to the LCD.

Standard LCD displays are made to operate in the range of 0°C to +50°C, working within this range does not mean that the LCD display is going to be readable across the that temperature range, LCD contrast is temperature dependent, and the LCD driver circuit has to be designed to compensate for this problem. Working over the maximum limit will deteriorate the display, storage maximum limit is about 60°C. Repeated exposure to over 50-60°C will make the blackening irreversible in all or part of the LCD display.

Go to http://www.pacificdisplay.com/lcd_oper_basics.htm for a basic explanation of how an LCD display works.