
B-65282EN/05 2.SPECIFICATIONS
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Power supply of 400-V input series
(1) Power specification
Item Specification
Power supply voltage for
the main circuit
Three-phase 400 VAC to 480 VAC
Star connection, neutral grounding (For
details, see Items (5) and (6).)
S
T
G
R
N
Power supply voltage for
the control circuit
Single-phase 200 VAC to 240 VAC (input
from connector CX1A)
(For details, see Item (7).)
Allowable voltage
deviation
-15% to +10% (including voltage variation
due to load)
Power frequency 50/60Hz, ±1Hz
Power supply unbalance ±5% of the rated voltage or less
Power supply impedance
(Note)
The voltage variation must be within ±7%
when a maximum output is produced for
voltage at non-load time (power running
and regeneration).
NOTE
When the power supply impedance is high, and the
voltage variation exceeds the specified values, a
PSM alarm (DC link undervoltage alarm or DC link
overvoltage alarm) can be issued, or the output of
the motor can decrease.
[Method of checking power supply impedance]
AC voltmeter
AC power
supply
R
S
T
G
L+
L-
L+
L-
U
V
W
G
Motor
Power supply
module
Spindle amplifier module or servo
amplifier module
(%)7(%)100
0
10
<×
−
EE
E0 : Voltage at non-load time
E1 : Voltage at maximum output time (power running and
regeneration)