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11. OPTIONS AND AUXILIARY EQUIPMENT
11.14 Power factor improving AC reactors The power factor improving AC reactors improve the phase factor by increasing the form factor of servo amplifier's input current. It can reduce the power capacity. The input power factor is improved to be about 90%. For use wit h a 1-phase power supply, it may be slightly lower than 90%. In addition, it reduces the higher harmonic of in put side. When using power factor improving reactors for two servo amplifiers or more, be sure t o connect a power factor improving reactor to each servo amplifi er. If using only one power factor improving reactor , enough improvement effect of phase factor can not be obtained unless all servo amplifiers are op erated.
Z
3-phase
200 to 230VAC
or
3-phase
380 to 480VAC
NFB
FR-BAL-(H)
Servo amplifie
r
MR-J3- B(4)
R
S
T
X
Y
Z
L1
L2
L3
MC
1-phase
200v to 230VAC
NFB
FR-BAL
Servo amplifier
MR-J3- B
R
S
T
X
Y
Z
L1
L2
L3
MC
W
W1C
RXSYTZ
H 5
D1
Installation screw
D 5
[Unit : mm]
(Note)
1-phase
100 to120VAC
NFB
FR-BAL
Servo amplifier
MR-J3- B1
R
S
T
X
Y
L1
Blank
MC
L2

Note. For the 1-phase 200V to 230V power supply, Connect the power

supply to L1, L2 and leave L3 open.