ACH550-UH User’s Manual 1-307
Technical data
Drive’s power connection terminals
The following table provides specifications for the drive’s power connection
terminals.
1. Do not use aluminum cable with frame sizes R1…R4.
2. See the following section for smaller wire sizes on frame size R6.
Power terminal considerations – R6 Frame size
WARNING! For R6 power terminals, if
compression lugs are supplied, they can only be
used for wire sizes that are 95 mm
2
(3/0 AWG) or
larger. Smaller wires will loosen and may damage
the drive, and require ring lugs as described below.
Ring Lugs
On the R6 frame size, if the cable size used is less
than 95 mm
2
(3/0 AWG) or if no compression lugs
are supplied, use ring lugs according to the
following procedure.
1. Select appropriate ring lugs from the following table.
2. Attach the supplied terminal lugs to the drive end of the cables.
3. Isolate the ends of the ring lugs with insulating tape or shrink tubing.
Frame
Size
U1, V1, W1
U2, V2, W2
BRK+
, UDC+ Terminals
Earthing PE Terminal
Min. Wire Size Max. Wire Size Torque Max. Wire Size Torque
mm
2
AWG mm
2
AWG Nm lb-ft mm
2
AWG Nm lb-ft
R1
Note 1
0.75 18 10 81.411081.41
R2
Note 1
0.75 18 10 81.411081.41
R3
Note 1
2.5 14 25 32.51.8 16 61.81.3
R4
Note 1
6 10 50 1/0 5.6 425321.5
R5 6
10 70 2/0 15 11 70 2/0 15 11
R6 95
Note 2
3/0 185 350 MCM 40 30 95 3/0 8 6
R7 16 6185350 MCM 40 30 Attach appropriate ring lugs to
ground wires and mount with,
up to five 13/32 bolts.
R8 16
62x2402x500 MCM 57 42
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