INPUT
OUTPUT
U1
V1 W1
1)
U2
V2 W2
UDC+
R+
UDC
-
R-
L1 L2 L3
(PE) (PE)PE
2)
Drive module
PE
* For alternatives, see
Disconnecting device
(page 45).
*
Grounding of the motor cable shield at the
cabinet entry
Ground the cable shield 360 degrees at the lead-
through of the cabinet.
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.
1), 2)
If shielded cable is used (not required but
recommended) and the conductivity of the
shield is < 50% of the conductivity of the phase
conductor, use a separate PE cable (1) or a cable
with a grounding conductor (2).
Ground the other end of the input cable shield or
PE conductor at the distribution board.
3) 360-degree grounding recommended at the
cabinet entry if shielded cable
4) 360-degree grounding required at the cabinet
entry in first environment installations **
5) Use a separate grounding cable if the
conductivity of the cable shield is < 50% of the
conductivity of the phase conductor and there is
no symmetrically constructed grounding
conductor in the cable (see
Selecting the power
cables
on page 54).
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.
External brake
resistor
3)
4)
U1
V1
W1
3 ~
Motor
5)
4)
**
First environment EMC compliance is defined in
Compliance with EN 61800-3:2004
(page 125).
To Next Page
Loading...
