ABB ACS800-104

51
Power connections – Frame R2i to R5i
Diagram
INPUT
OUTPUT
U1
V1
W1
3~
Motor
UDC+
2)
1)
Inverter module
Grounding of the motor cable shield at the motor end
For minimum radio frequency interference:
• ground the cable shield 360 degrees at the lead-through of
the motor terminal box
• or ground the cable by twisting the shield as follows:
flattened width >
1/5 × length.
360 degrees grounding
Conductive gaskets
a
b
b > 1/5 × a
1) 360 degrees grounding
2) Use a separate grounding cable if the
conductivity of the cable shield is less than 50%
of the conductivity of the phase conductor in a
cable with no symmetrically constructed
grounding conductor (see the document
ACS 800 MultiDrive; Planning the Electrical
Installation [3AFE 64783742, English]).
Note:
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.
Do not use an asymmetrically constructed motor
cable. Connecting its fourth conductor at the motor
end increases bearing currents and causes extra
wear.
UDC-
L+ L-
V2 W2U2