Motor Cable (X2 - U, V, W, Earth); Braking Resistor Connection (X2 - +B, -B) - nord NORDAC SK 5xxE Series Manual

2.8.3 Motor cable (X2 - U, V, W, earth)

The motor cable may have a total length of 100m if this is a standard cable. If a screened motor cable is
used, or if the cable is laid in a metal conduit which is well earthed, the total length should not exceed 30m.
For greater lengths of cable, an additional output choke (accessory) must be used.
Please also observe Section 8.4 EMC limit value classes.
Note:
For multiple motor use the total cable length consists
Note:
of the sum of the individual cable lengths.
Cable cross-section:

2.8.4 Braking resistor connection (X2 - +B, -B)

The terminals +B/ -B are intended for the connection of a suitable braking resistor. A short screened
connection should be selected.
The great production of heat in the braking resistor must be taken into account.
Note:
For devices with 115V mains voltage, no DC terminal is provided.
Note:
Attention: The terminals +B, -DC are suitable for the DC-
coupling of several frequency inverters. Never
connect a braking resistor to DC! For further details
of DC-coupling, please refer to Section 2.8.5.
Cable cross-section:
BU 0500 GB
2
0.2 ... 6mm stiff cable
2
0.2 ... 4mm flexible cable
AWG 24-10
2
0.2 ... 6mm stiff cable
2
0.2 ... 4mm flexible cable
AWG 24-10
Subject to technical alterations
2 Assembly and installation
27