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Connection procedure
1. If the DC link and the brake unit are located in separate cabinets, ground the DC cable
360 degrees at the cabinet lead-throughs.
2. At the brake chopper end, connect the twisted shields (protective earth conductor) of
the DC and resistor cables and the third conductors to the grounding terminals.
3. Connect the conductors to the UDC+ and UDC- terminals of the brake chopper as
shown below.
4. Connect the conductors to the R+ and R- terminals of the brake chopper as shown
below.
UDC-
3
2
2
5. Connect the brake resistors in parallel as shown below. See the
on page
36
for the cable shield grounding.
Note: The cable between the chopper and the first resistor must be able to carry the
entire braking power. Provide adequate support for the cables below the chopper and
resistor units.
Chopper
R+
R–
UDC+ R+
R-
3
4
4
2
Resistor
R+
R–
Electrical installation 37
35 N·m
2
6 N·m
Connection diagram
Resistor
R+
R–
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