Rockwell Automation 20M LPM15 Liquid-Cooled Adjustable Frequency AC Drive FRN 2.xxx - Manual (Page 33)

Installation/Wiring 1-21
Installing a Required External/Separate Input Disconnect
An input disconnect must be installed in the line before the drive input
terminals in accordance with local, national, and international codes (e.g.,
NEC/CEC). The disconnect should be sized according to the in-rush current
as well as any additional loads the disconnect might supply. The trip rating
for the inrush current (10-12 times full load current) should be coordinated
with that of the input isolation transformer, if used. Refer to
Installing
Transformers and Reactors (Optional) on page 1-19 for additional
information.
Installing Power Wiring from the AC Input Line to the Drive’s Power
Terminals
Use the following steps to connect AC input power to the drive:
1. Wire the AC input power leads by routing them as shown in Figure 1.1 ,
Figure 1.2 or Figure 1.3 .
2. Connect the three-phase AC input power leads (three-wire 380-480
VAC) to the appropriate terminals.
On 6-pulse rectifier drives, connect the AC input power leads to the L1,
L2, and L3 terminals. See
Figure 1.9 .
On 12-pulse rectifier drives, connect the AC input power leads to the L1,
L2, L3, L4, L5, and L6 terminals. See
Figure 1.10 .
3. Tighten the AC input power terminals to the proper torque as shown in
Table 1.E .
Table 1.E Terminal Tightening Torques
!
ATTENTION: Do not route signal and control wiring with
power wiring in the same conduit. This can cause interference
with drive operation. Failure to observe this precaution could
result in damage to, or destruction of, the equipment.
Drive Type Terminals Hardware Type
Maximum Tightening Torque
(+10%)
B-Frame
L1 to L6 1/4-20, Gr. 5 13 N-m (10 lb.-ft.)
U, V, W 5/16-18, Gr. 5 24 N-m (18 lb.-ft.)
GND, PE 5/16 Hex 31 N-m (23 lb.-ft.)
C-Frame
L1 to L6 1/2-13; Gr. 5 100 N-m (75 lb.-ft.)
U, V, W 3/8-16, Gr. 5 42 N-m (31 lb.-ft.)
GND, PE 5/16 Hex 31 N-m (23 lb.-ft.)
D-Frame
L1 to L6 1/2-13; Gr. 5 100 N-m (75 lb.-ft.)
U, V, W 1/2-13; Gr. 5 100 N-m (75 lb.-ft.)
GND, PE 1/2 Hex 58 N-m (42 lb.-ft.)