ABB ACH580-01 Series Manual de instalação rápida e de arranque - Página 6
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11. Connect the power cables
UL (NEC) connection diagram with symmetrically shielded cable or conduit
L1
L2
L3
PE
a
PE
L1
L2
L3
Note: UL (NEC) installation can include separate insulated conductors
inside a conduit, shielded VFD cable in conduit, or shielded VFD cable
without conduit. The normal dashed symbol (c) in this diagram
represents the shield of shielded VFD cable. The same solid symbol (b)
represents conduit.
a. Insulated ground conductor in a conduit: Ground to drive's PE
terminal and to the distribution panel ground bus. For a VFD cable
installation see d.
b. Conduit ground: Bond the conduit to the drive's conduit box and to
the distribution panel enclosure. For a VFD cable installation see c.
c. Shield of a VFD shielded cable: Ground the shield 360° under drive's
grounding clamp, then twist with the ground conductors and
connect under the drive's ground terminal. Ground the shield also
360° at the motor end, then twist and connect under the motor's
ground terminal. For a conduit installation see b.
Connection procedure
1.
Frames R1...R4: Go to step 2.
Frames R5...R9: Remove the shroud(s) on the power cable terminals.
Frames R6...R9: Remove the side plates (1a). Remove the shroud (1b), then make the necessary holes for the cables. In
frames R8...R9, if you install parallel cables, also make the necessary holes in the lower shroud.
R5
1
2.
Prepare the power cables (shielded cable):
Frames R1...R4: The drive is shipped with grommet cones pointing up. They must be removed and inserted back
pointing down.
•
Remove the rubber grommets from the cable entry.
•
Cut a sufficient hole in the rubber grommet. Slide the grommet onto the cable (a).
•
Prepare the ends of the input power cable and motor cable as illustrated in the applicable figure (b). If you use
aluminum cables, apply grease to the peeled cable before you connect it to the drive.
•
Slide the cables through the holes in the cable entry and attach the grommets to the holes.
Prepare the power cables (conduit):
•
Remove the rubber grommets, if present, for the motor and input power cabling.
•
Attach the cable conduits for the motor and input cabling to the cable entry holes in place of the removed grommets.
UDC+
UDC-
R-
T1/U T2/V T3/W
R+
b
f
c
e
U1
R6...R9
1a
d. Symmetrically constructed grounding
conductors inside a VFD shielded cable:
Twist together, combine with the shield and
connect under the drive's ground terminal
d
and under the motor's ground terminal. For a
conduit installation see a.
e. External brake resistor connection (if used):
For a conduit installation see a and b. For a
VFD cable installation see c and d. In
addition, cut the third phase conductor
which is not needed for the brake resistor
connection.
d
f. If necessary, install an external filter (du/dt,
common mode, or sine filter). Filters are
V1
W1
available from ABB.
PE
M
3
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.
Note: All openings in the drive enclosure must
be closed with UL listed devices having the
same UL Type rating as the drive UL Type.
R6...R9
1b
6