Mitsubishi Electric Melservo MR-J3- 350B4, Instruction Manual

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13 - 80
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.
Converter unit Drive unit Servo motor
C
P
1
P
2
L
1
L
2
L
3
L
11
L
21
V
U
W
V
U
W
Motor
Encoder
OHS1
OHS2
Cooling fan
BU
BV
BW
L
11
L
21
2) Control power supply lead
3) Motor power supply lead
6) Thermal relay
Encoder cable
5) Cooling fan
lead
3)
Power supply
1)
Power factor
improving
DC reactor
4) Regenerative option lead
Regenerative option
1) Main circuit power
supply lead
Power supply
Thermal
relay
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 (140 ) or more
for wiring.
Table 13.4 Recommended wire
Wires[mm
2
]
Converter unit Drive unit
1)
L
1
L
2
L
3
2)
L
11
L
21
3) U V W
P
1
P
2
4)
P
2
C
5)
BU BV BW
6)
OHS1 OHS2
MR-J3-DU30KB
(Note 2)
50(AWG1/0): d
(Note 1)
60(AWG2/0):b
(Note 1)
MR-J3-CR55K
MR-J3-DU37KB
(Note 2)
60(AWG2/0): d
(Note 1)
80(AWG3/0):b
(Note 1)
2(AWG14)
MR-J3-DU30KB4
(Note 2)
22(AWG4): b
(Note 1)
30(AWG2):b
(Note 1)
MR-J3-DU37KB4
(Note 2)
30(AWG2): c
(Note 1)
38(AWG2):b
(Note 1)
1.25(AWG16)
MR-J3-CR55K4
MR-J3-DU45KB4
(Note 2)
38(AWG2): c
(Note 1)
50(AWG1/0):b
(Note 1)
1.25(AWG16)
MR-J3-DU55KB4
(Note 2)
50(AWG1/0): d
(Note 1)
2(AWG14)
60(AWG2/0):b
(Note 1)
5.5(AWG10):a
(Note 1)
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.