44(110)
CABLING AND CONNECTIONS
6
6.1.1.2
DC supply and brake resistor cables
Frequency converters are equipped with terminals for the DC supply and an optional external brake
resistor. These terminals are marked with
B–
,
B+/R+
and
R–
. The DC bus connection is made to terminals
B– and B+ and the brake resistor connection to R+ and R–. Note that the DC connection is optional for
drives greater than FR8.
6.1.1.3 Control
cable
For information on control cables see Chapter 6.2.1.1 and Table 6-1.
6.1.1.4
Cable and fuse sizes, NX_2 and NX_5, FR4 to FR9
The table below shows typical cable sizes and types that can be used with the converter. The final
selection should be made according to local regulations, cable installation conditions and cable
specification.
Terminal cable size
Frame
Type
I
L
[A]
Fuse
[A]
Mains and
motor cable
Cu [mm
2
]
Main terminal
[mm
2
]
Earth terminal
[mm
2
]
NX0004 2—0008 2
NX0003 5—0009 5
3—8
3—9
10 3*1.5+1.5
1—4
1—4
FR4
NX0011 2—0012 2
NX0012 5
11—12
12
16 3*2.5+2.5
1—4
1—4
NX0017 2
NX0016 5
17
16
20 3*4+4
1—10
1—10
NX0025 2
NX0022 5
25
22
25 3*6+6
1—10
1—10
FR5
NX0031 2
NX0031 5
32
31
35 3*10+10
1—10
1—10
NX0048 2
NX0038 5—0045 5
48
38—45
50 3*10+10
2.5—50 Cu
6—50 Al
2.5—35
FR6
NX0061 2
NX0061 5
61 63 3*16+16
2.5—50 Cu
6—50 Al
2.5—35
NX0075 2
NX0072 5
75
72
80 3*25+16
2.5—50 Cu
6—50 Al
6—70
NX0088 2
NX0087 5
88
87
100 3*35+16
2.5—50 Cu
6—50 Al
6—70
FR7
NX0114 2
NX0105 5
114
105
125 3*50+25
2.5—50 Cu
6—50 Al
6—70
NX0140 2
NX0140 5
140 160 3*70+35 25—95
Cu/Al 25—95
NX0170 2
NX0168 5
168 200 3*95+50 95—185
Cu/Al 25—95
FR8
NX0205 2
NX0205 5
205 250 3*150+70 95—185
Cu/Al 25—95
NX0261 2
NX0261 5
261 315
3*185+95
or
2*(3*120+70)
95—185 Cu/Al 2
5—95
FR9
NX0300 2
NX0300 5
300
315
2*(3*120+70)
95—185 Cu/Al 2
5—95
Table 6-2. Cable and fuse sizes for NX_2 and NX_5 (FR4 to FR9)