what is the meaning of voltage value in Fanuc Servo motor

[bbqa01]

Each fanuc servo motor have a specific voltage: 90V, 56 V, 112V, 47 V?
Someone can tell me what is the meaning of these value,
Can be a fanuc servo motor replace with one differents voltage?

[Al_The_Man]

This is the voltage required to operate at the rated torque and rpm, you should not deviate very much from these limits.
Al.

[bbqa01]

Thank you for your reply,

I thing the voltage applied to motor is 200V*1.4 = 280V DC ???,) Because the servo amp use 200V AC input). Current is varies but voltage is always 200- 220vac <=> 280 vdc?

[Al_The_Man]

This is most likely a 3 phase SCR drive across the AC supply. If so the mean level is something lower than the peak.
Al.