
5.POWER SUPPLY FANUC AC SERVO AMPLIFIER β series B-65232EN/03
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5.2 POWER SUPPLY RATINGS
5.2.1 Three-phase Input Power Supply Ratings for Motor Power
(1) The power supply rating necessary when using multiple servo
motors can be determined by summing the rating of the power
supplies required by the individual motors.
(2) The power supply ratings listed in Table 5.2.1 are sufficient as
continuous ratings. Note, however, that servo motor acceleration
causes a current that is roughly triple the continuous rating to
flow momentarily.
(3) When the power is turned on, a surge current of about 37 A
(when 264 VAC is applied) flows the 20 msec.
Table 5.2.1 Three-phase power supply ratings
Motor model
Power supply rating per motor
(three-phase power input)
(kVA)
Power supply rating per motor
(single-phase power input)
(kVA)
βM0.2/4000 0.08 0.10
βM0.3/4000 0.15 0.19
β1/3000 0.46 0.57
β2/3000 0.77 0.95
βM0.4/4000 0.20 0.25
βM0.5/4000 0.31 0.38
βM1/4000 0.62 0.76
β3/3000 0.77 0.95
β6/2000 1.4 1.7
α1/5000i
0.77 0.95
α2/5000i
1.2 1.4
α4/4000i
2.2 2.7
α8/3000i
2.5 3.0
α12/3000i
4.6 4.2 (*1)
α22/3000i
6.2 4.2 (*1)
αM2/5000i
1.2 2.3
αM3/5000i
1.5 1.9
αM8/4000i
3.9 4.2 (*1)
αM12/4000i
4.2 4.2 (*1)
αC4/3000i
1.5 1.9
αC8/2000i
1.9 1.9
αC12/2000i
2.8 1.9
αC22/2000i
4.6 4.2 (*1)
αC30/1500i
6.5 4.2 (*1)
(*1) Depends on the output limit applicable when single-phase input
is used.