Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 664

Part 9: Review on Replacement of Optional Peripheral Equipment
7.4 MR-J4 series Power factor improving DC reactors 400 V class
The following shows the advantages of using power factor improving DC reactor.
It improves the power factor by increasing the form factor of the servo amplifier's input current.
It decreases the power supply capacity.
The input power factor is improved to be about 85%.
As compared to the power factor improving AC reactor (FR-HAL-(H)), it decreases the loss.
When connecting the power factor improving DC reactor to the servo amplifier, always disconnect P3 and
P4. If it remains connected, the effect of the power factor improving DC reactor is not produced.
When used, the power factor improving DC reactor generates heat. To release heat, therefore, leave a 10
cm or more clearance at each of the top and bottom, and a 5 cm or more clearance on each side.
P P1
W1
W ± 2.5
P P1
6
W1
W ± 2.5
Note 1. Use this for grounding.
2. When using the power factor improving DC reactor, remove the short bar across P3 and P4.
4-d mounting hole (Note 1)
D or less
(D3)
D2
D1 ± 1
Fig. 9.6
4-d mounting hole (Note 1)
D or less
(D3)
D2
D1 ± 1
Fig. 9.8
P P1
W1
W ± 2.5
FR-HEL
9 - 63
4-d mounting hole (Note 1)
D or less
(D3)
D2
D1 ± 1
Fig. 9.7
Servo amplifier
P3
(Note 2)
P4
5 m or less