1FK7 maximum temperature

[Kataeb]

what is the maximum allowable temperature for a Siemens 1FK7 servomotor?

 

[gclshortt]

The following thread should help:
https://support.industry.siemens.com/tf/ww/en/posts/synchronous-motors-1fk7-high-temperature/48252/?page=0&pageSize=10

Configuration Manual:
http://www.gregbotos.com/publicfiles/siemens_data/PFK7S.pdf
"Temperature class F for a winding temperature of
ΔT = 100 K at an ambient temperature of +40 °C"

Hope this helps,

 

[Kataeb]

the ambient temperature is now 20 °C, and we are reading a servomotor temperature of 118°C at full machine speed, after running for hours. so the temperature rise is around 100.

in the summer the ambient temperature can reach 55 °C. is it acceptable to have also a temperature rise of 100 ?

 

[kamenges]

If you experience that same temperature rise n a 55 degree environment you will very likely be overtemperature.

Keith

 

[Kataeb]

is it normal that a servomotor , running for few hours , at half rated torque and half rated speed , goes up in temperature till 120 °C ?