Recommended Wires - Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual

13. SERVO AMPLIFIERS WITH A LARGE CAPACITY (30k TO 55kW)

13.9.4 Recommended wires

The following diagram shows the wires used for wiring. Use the wires given in this paragraph or equivalent.
Power factor
improving
DC reactor
4) Regenerative option lead
Regenerative option
1) Main circuit power
Power supply
supply lead
The following table lists wire sizes. The wires used assume that they are 600V vinyl wires and the wiring
distance is 30m max. If the wiring distance is over 30m, choose the wire size in consideration of voltage drop.
To comply with the UL/C-UL (CSA) Standard, use UL-recognized copper wires rated at 60
for wiring.
Converter unit Drive unit
MR-J3-DU30KB
(Note 2)
MR-J3-CR55K
MR-J3-DU37KB
(Note 2)
MR-J3-DU30KB4
(Note 2)
MR-J3-DU37KB4
(Note 2)
MR-J3-CR55K4
MR-J3-DU45KB4
(Note 2)
MR-J3-DU55KB4
(Note 2)
Note 1. For crimping terminals and applicable tools, refer to Table 13.5.
2. When connecting to the terminal block, be sure to use the screws which are provided with the terminal block.
For the brake unit, HIV cable (600V grade heat-resistant PVC insulated wire) is recommended.
Converter unit
3)
P
1
P
2
C
L
1
L
2
L
3
L
11
L
21
2) Control power supply lead
Table 13.4 Recommended wire
1) 2)
L L L L
1 2 3 11
50(AWG1/0): d
(Note 1)
60(AWG2/0): d
(Note 1)
22(AWG4): b
(Note 1)
2(AWG14)
30(AWG2): c
(Note 1)
38(AWG2): c
(Note 1)
50(AWG1/0): d
(Note 1)
13 - 80
Drive unit
3) Motor power supply lead
U
V
1)
W
L
11
Power supply
L
21
2
Wires[mm
3) U V W
L P P
21 1 2
60(AWG2/0):b
(Note 1)
80(AWG3/0):b
(Note 1)
30(AWG2):b
(Note 1) 5.5(AWG10):a
(Note 1)
38(AWG2):b
(Note 1)
50(AWG1/0):b
(Note 1)
60(AWG2/0):b
(Note 1)
U
V
W
Encoder cable
6) Thermal relay
OHS1
OHS2
5) Cooling fan
lead
BU
BV
BW
(140 ) or more
]
4) 5)
P C BU BV BW
2
2(AWG14)
1.25(AWG16)
Servo motor
Motor
Encoder
Thermal
relay
Cooling fan
6)
OHS1 OHS2
1.25(AWG16)