Mitsubishi Electric MELSERVO MR-J3-xT, Instruction Manual

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14. OPTIONS AND AUXILIARY EQUIPMENT
(b) Example of selecting the wire sizes
When connecting multiple servo amplifiers, always use junction terminals for wiring the servo amplifier
terminals P, N. Also, connect the servo amplifiers in the order of larger to smaller capacities.
R2/L
1
S2/L
2
T2/L
3
R/L
11
S/L
21
T/MC1
P/L
N/L
P
N
50mm
2
Overall wiring length 5m or less
First unit:
50mm assuming that the total of servo amplifier
capacities is 27.5kW since 15kW + 7kW + 3.5kW
+ 2.0kW = 27.5kW.
P
N
P
N
P
N
22mm
2
8mm
2
3.5mm
2
22mm
2
8mm
2
5.5mm
2
3.5mm
2
Junction terminals
Wire as short as possible.
Second unit:
22mm assuming that the total of servo amplifier
capacities is 15kW since 7kW + 3.5kW + 2.0kW =
12.5kW.
Third unit:
8mm assuming that the total of servo amplifier
capacities is 7kW since 3.5kW + 2.0kW = 5.5kW.
Fourth unit:
3.5mm assuming that the total of servo amplifier
capacities is 2kW since 2.0kW = 2.0kW.
FR-CV-55K Servo amplifier (15kW)
Servo amplifier (7kW)
Servo amplifier (3.5kW)
Servo amplifier (2kW)
2
2
2
2
(Note)
(Note)
(Note)
(Note)
Note. When using the servo amplifier of 7kW or less, make sure to disconnect the wiring of built-in regeneration resistor (3.5kW or
less: P-D, 5k/7kW: P-C).
(5) Other precautions
(a) Always use the FR-CVL as the power factor improving reactor. Do not use the FR-BAL or FR-BEL.
(b) The inputs/outputs (main circuits) of the FR-CV and servo amplifiers include high-frequency
components and may provide electromagnetic wave interference to communication equipment
(such as AM radios) used near them. In this case, interference can be reduced by installing the
radio noise filter (FR-BIF) or line noise filter (FR-BSF01, FR-BLF).
(c) The overall wiring length for connection of the DC power supply between the FR-CV and servo
amplifiers should be 5m or less, and the wiring must be twisted.