
5. INSTALLATION
B–65162E/03
86
(1) 200–V power supply
S Nominal voltage rating : 200/220/230 VAC
S Allowable voltage deviation : –15% to +10% (including Voltage
deviation due to load)
S Power frequency : 50/60 Hz
S Allowable frequency deviation : +1 Hz
S Power supply unbalance : "5% of the rated voltage or less
S Power supply inpedance : Voltage deviation due to load
(at maximum output) shall be 5% or
less.
AC
power supply
[Method to check power impedance]
where,
E
0
: Voltage at motor stop
E
1
: Voltage during motor acceleration or voltage immediately before the
start of speed reduction with the application of load
R L+
S L–
T
G
Motor
E
0
–E
1
E
0
100(%)<7(%)
L+ U
L– V
W
G
AC
voltmeter
Power supply
module
Spindle amplifier
module or servo
amplifier module
D Turn on the control power supply (CX1A power supply input) of the
power supply module (PSM or PSMR) at the same time or earlier than
the CNC.
D It is recommended that a capacitor unit for power–factor improvement
not be installed. This is because the capacitor unit for power–factor
improvement may adversely affect power regeneration.
D The rated output of the motor is guaranteed for the rated input voltage.
If the input voltage changes, the rated output may not appear even
when the input voltage change is within the allowable range.
D When the power supply is used in an area where the input voltage is
not within the range of 200 to 230 VAC, a power transformer is
required. When a power transformer is to be provided by the user, the
power must satisfy the specifications listed below. For transformers
manufactured by FANUC, see (6) in Section 2.2.3.
5.2
INPUT POWER AND
GROUNDING
5.2.1
Input Power