Determining Wire And Fuse Sizes - Omron MX2 User Manual

Step-by-Step Basic Installation
2-3-6

Determining Wire and Fuse Sizes

Motor Output
kW HP
VT CT VT CT
0.2 0.1 ¼ 1/8
0.4 0.2 ½ ¼
0.55 0.4 ¾ ½
1.1 0.75 1.5 1
2.2 1.5 3 2
3.0 2.2 4 3
0.2 0.1 ¼ 1/8
0.4 0.2 ½ ¼
0.75 0.4 1 ½
1.1 0.75 1.5 1
2.2 1.5 3 2
3.0 2.2 4 3
5.5 3.7 7.5 5
7.5 5.5 10 7.5
11 7.5 15 10
15 11 20 15
18.5 15 25 20
0.75 0.4 1 ½
1.5 0.75 2 1
2.2 1.5 3 2
3.0 2.2 4 3
4.0 3.0 5 4
5.5 4.0 7.5 5
7.5 5.5 10 7.5
11 7.5 15 10
15 11 20 15
18.5 15 25 20
Note 1
Note 2
Note 3
Note 4
The maximum motor currents in your application determines the recom-
mended wore size. The following table gives the wire size in AWG. The
"Power Lines" column applies to the inverter input power, output wires to the
motor, the earth ground connection, and any other components shown in the
"Basic System Description" on page 26. The "Signal Lines" column applies to
any wire connecting to the two green connectors just inside the front cover
panel.
Inverter Model
MX2-AB001 AWG16 / 1.3 mm² (75°C only) 18 to 28 AWG /
MX2-AB002
MX2-AB004
MX2-AB007 AWG12 / 3.3 mm² (75°C only)
MX2-AB015 AWG10 / 5.3 mm²
MX2-AB022
MX2-A2001 AWG16 / 1.3 mm²
MX2-A2002
MX2-A2004
MX2-A2007
MX2-A2015 AWG14 / 2.1 mm² (75°C only)
MX2-A2022 AWG12 / 3.3 mm² (75°C only)
MX2-A2037 AWG10 / 5.3 mm² (75°C only)
MX2-A2055 AWG6 / 13 mm² (75°C only)
MX2-A2075
MX2-A2110 AWG4 / 21 mm² (75°C only)
MX2-A2150 AWG2 / 34 mm² (75°C only)
MX2-A4004 AWG16 / 1.3 mm²
MX2-A4007
MX2-A4015
MX2-A4022 AWG14 / 2.1 mm²
MX2-A4030
MX2-A4040 AWG12 / 3.3 mm² (75°C only)
MX2-A4055 AWG10/ 5.3 mm² (75°C only)
MX2-A4075
MX2-A4110 AWG6 / 13 mm² (75°C only)
MX2-A4150 AWG6 / 13 mm² (75°C only)
Field wiring must be made by a UL-Listed and CSA-certified closed-loop ter-
minal connector sized for the wire gauge involved. Connector must be fixed by
using the crimping tool specified by the connector manufacturer.
Be sure to consider the capacity of the circuit breaker to be used.
Be sure to use a larger wire gauge if power line length exceeds 66 ft. (20 m).
Use 18 AWG / 0.75 mm² wire for the alarm signal wire ([AL0], [AL1], [AL2] ter-
minals).
Wiring
Power Lines Signal Lines
0.14 to
0.75 mm²
shielded wire
*4
Section 2-3
Applicable equipment
Fuse
(UL-rated, class J, 600 V)
10 A
15 A
30 A
10 A
15 A
20 A
30 A
40 A
80 A
80 A
10 A
15 A
20 A
40 A
40 A
37