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68 Electrical installation
Connecting the power cables
￭
Connection diagram
1
PE
5
4
PE
(L)
1
Drive
2
Disconnecting device
3
Input power cable
4
Two protective earth (ground) conductors. Drive safety standard IEC/EN 61800-5-1
requires two PE conductors for a fixed connection, if the cross-section of grounding
conductor is less than 10 mm 2 Cu or 16 mm 2 Al. For example, you can use the cable
shield in addition to the fourth conductor.
5
Separate PE cable (line side). Use a separate grounding cable or a cable with a separate
PE conductor for the line side, if the conductivity of the fourth conductor or shield
does not meet the requirements for the PE conductor.
6
Motor cable
Note: ABB recommends to use a symmetrical shielded cable (VFD cable) as the motor
cable.
7
Separate PE cable (motor side). Use a separate grounding cable for the motor side, if
the conductivity of the shield is not sufficient, or if there is no symmetrically constructed
PE conductor in the cable.
8
360-degree grounding of the cable shield. Required for the motor cable and brake
resistor cable (if used, for frame R2...R4 only), recommended for the input power cable.
9
Brake resistor (optional, for frame R2...R4 only).
L1
L2
L3
8
3
2
L1
L2
L3
(N)
R+
T1/
R-
UDC-
UDC+
U
8
U1
9
T2/
T3/
V
W
6
7
V1
W1
M
PE
3
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