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4. CONNECTION OF SERVO AMPLIFIER AND SERVO MOTOR
4 - 7
4.3 Selection example of wires
POINT
Wires indicated in this section are separated wires. When using a cable for
power line (U, V, and W) between the servo amplifier and servo motor, use a
600 V grade EP rubber insulated chloroprene sheath cab-tire cable (2PNCT).
For selection of cables, refer to appendix 6.
To comply with the UL/CSA standard, use the wires shown in appendix 4 for
wiring. To comply with other standards, use a wire that is complied with each
standard.
Selection condition of wire size is as follows.
Construction condition: One wire is constructed in the air.
Wire length: 30 m or less
The following diagram shows the wires used for wiring. Use the wires given in this section or equivalent.
2) Electromagnetic
brake lead
U
V
W
Servo motor
1) Servo motor power lead
Servo amplifier
Motor
U
V
W
B1
B2
Electromagnetic
brake
Encoder
Encoder cable
When using the 600 V Grade heat-resistant polyvinyl chloride insulated wire (HIV wire)
Wire size selection examples for HIV wires are indicated below.
Table 4.1 Wire size selection example 2 (HIV wire)
Wires [mm
2
]
Servo motor
1) U/V/W/
2) B1/B2
HF-KN13
HF-KN23
HF-KN43
HF-KN73
0.75 (AWG 18) (Note) 0.5 (AWG 20) (Note)
HF-SN52
HF-SN102
1.25 (AWG 16)
HF-SN152
HF-SN202
2 (AWG 14)
HF-SN302 3.5 (AWG 12)
1.25 (AWG 16)
Note. It is for 10 m wire length. When fabricating an extension cable, use 1.25 mm
2
(AWG 16).