Connecting The Power Cables; Connection Diagram - ABB ACS355 Series Supplement Manual

40

Connecting the power cables

Connection diagram

For alternatives, see
section Supply
disconnecting device
in the ACS355 user's
manual.
1)
Ground the other end of the PE conductor at the distribution board.
2)
Use a separate grounding cable if the conductivity of the cable shield is insufficient (smaller than the conductivity of the
phase conductor) and there is no symmetrically constructed grounding conductor in the cable (see section Selecting the
power cables in the ACS355 user's manual).
3)
L and N are connection markings for 1-phase supply.
Note:
Do not use an asymmetrically constructed motor cable.
If there is a symmetrically constructed grounding conductor in the motor cable in addition to the conductive shield, connect
the grounding conductor to the grounding terminal at the drive and motor ends.
BRK+ and BRK- terminals cannot be used as common DC terminals in the ACS355 drives with IP66/67 / UL Type 4X
enclosure.
Grounding of the motor cable shield at the motor end
For minimum radio frequency interference:
• ground the cable by twisting the shield as follows: flattened width > 1/5 · length
• or ground the cable shield 360 degrees at the lead-through of the motor terminal
box.
Electrical installation
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3)
INPUT
(L) (N)
PE
U1 V1 W1
1)
PE
L1 L2 L3
3)
(L) (N)
Drive
OUTPUT
U2
BRK- BRK+
U1
Optional brake
resistor
3
Motor
V2 W2
2)
V1
W1
~
b > 1/5 · a
b
a