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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 with a 1-phase power supply, it may be slightly
lower than 90%.
In addition, it reduces the higher harmonic of input side.
When using power factor improving reactors for two servo amplifiers or more, be sure to connect a power factor
improving reactor to each servo amplifier.
If using only one power factor improving reactor, enough improvement effect of phase factor cannot be
obtained unless all servo amplifiers are operated.
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
L
1
L
2
L
3
MC
1-phase
200v to 230VAC
NFB
FR-BAL
Servo amplifier
MR-J3- B
R
S
T
X
Y
Z
L
1
L
2
L
3
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
L
1
Blank
MC
L
2
Note. For the 1-phase 200V to 230V power supply, Connect the power
supply to L
1
, L
2
and leave L
3
open.