Earthing And Earth Fault Protection - Vacon 20 X Installation, Technical And Maintenance Manual

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Earthing and earth fault protection

CAUTION!
®
The VACON 20 X AC drive must always be earthed with an earthing conductor connected to
the earthing terminal marked with
Since the touch current exceeds 3.5 mA AC, according to EN61800-5-1, the drive shall have a
fixed connection and provision of an additional terminal for a second protective earthing con-
ductor of the same cross-sectional area as the original protective earthing conductor.
Three connections are provided for: the ORIGINAL protective earthing conductor, the SECOND
protective conductor and the MOTOR protective conductor.
Table 3. Mains supply connector, MU2 example, ORIGINAL Protective Earth.
Table 4. Motor supply connector, MU2 example, MOTOR Protective Earth.
See Chapter 4 for the location of all the ORIGINAL and MOTOR Protective Earth terminals.
The SECOND Protective Earth connection is located on the bottom side of the frequency con-
verter, on the heatsink (Top side). This has to be connected before mounting the drive. See
Figure 1 for the position of the SECOND Protective Earth connection.
1
.
Mains supply / Type HAN Q5/0 (Male)
Pin Function
1 L1
2 L2
3 L3
4 -
5 -
PE Protective Earth
Motor output / Type HAN Q8 (Female)
Pin Function
1 U
2 Not connected
3 W
4 Brake (-)
5 Temperature sensor (+)
6 Brake (+)
7 V
8 Temperature sensor (-)
PE Protective Earth
Safety