External brake resistor connection (if used): For a conduit installation, see 1 and 2. For
a VFD cable installation, see 3 and 4. In addition, cut the third phase conductor which
is not needed for the brake resistor connection.
5
If necessary, install an external filter (d
u
/d
t
, common mode, or sine filter). Filters are
available from ABB.
6
For IP66 (UL Type 4X) drive with optional disconnect and fuses, wire to terminals 2T1,
4T2 and 6T3. External fused disconnect is not needed. Drive with this option (+F254)
incorporates suitable branch circuit fuses. The UL98 disconnect is designed for feeder
or branch applications and does not require upstream branch protection.
7
Note: Frames R1…R3 have a built-in brake chopper. If necessary, you can connect a brake
resistor to terminals R- and UDC+/R+. The brake resistor is not included in the drive delivery.
In frames R4…R9, you can connect an external brake chopper to terminals UDC+ and UDC-
. The brake chopper is not included in the drive delivery.
All openings in the drive enclosure must be closed with UL listed devices having the same
UL Type rating as the drive UL Type.
ABB does not recommend an asymmetrically constructed motor cable or a conduit for
motor cabling for motors above 30 kW (40 hp) (see General guidelines (page 106)). Connect-
ing its fourth conductor at the motor end increases bearing currents and causes extra
wear.
For a single phase connection, use terminals L1 and L2.
Electrical installation – North America 185
To Next Page
Loading...
