Rockwell Automation SA3000 High Power Modules - Manual (Page 27)

Installation Guidelines 3-3
3.2.3 Wire Routing
Ac output wiring is routed through the top of the cabinet, above terminals 181, 182
and 183. DC input wiring is also routed through the top of the cabinet. DC input wiring
is usually connected to the DC bus in the overhead enclosure that distributes the DC
power to the common DC bus Inverter Power Modules. A DC input disconnect switch
is provided to disconnect DC bus power, providing safe access to the inside of the
SA3000 Power Module cabinet.
3.3 Grounding
System grounding is to be done according to the supplied wiring diagrams (W/Es) in
accordance with applicable codes. To prevent noise interference and possible
malfunction of this equipment, it is imperative that a good cabinet ground be provided.
The grounding conductor must be as short as possible and be run directly from the
control panel ground terminal to a solid earth ground. It is recommended that the
grounding conductor be the same size conductor as the power wiring. Multi-cabinet
grounding wires should not be daisy-chained but should be run separately to the
common point of earth ground.
3.4 Installing the Power Module Cabinet
Use the following procedure to install the SA3000 Power Module cabinet:
Step 1. Ensure that DC input power leading to the SA3000 Power Module is off.
Step 2. Position the SA3000 Power Module on a level mounting surface. See figures
3.1, 3.2, and 3.3 for cabinet dimensions. Floor mounting dimensions are
included for applications in which the cabinet is to be attached to the floor.
Step 3. Connect the DC bus to terminals 45 (-) and 47(+). See the W/Es. Connect
the GND terminal to earth ground.
Step 4. If used, connect the optional output contactor to the U, V, and W terminals.
Step 5. Connect the motor leads to the output contactor. If an output contactor is not
used, connect the motor leads directly to the U, V, and W terminals. See the
W/Es and figure 3.4.
Step 6. Connect the GND terminal to earth ground.
Step 7. Connect the AC control power input line (two-wire 115 VAC with ground) to
terminals L1 (L), L2 (N), and GND on the control wiring terminal board. See
the W/Es and figure 3.4.
Table 3.3 – Terminal Tightening Torques
Terminals Tightening Torque
DC Bus Input Power: 45, 47 41 Nm (30 lb-ft)
Output Power: U, V, W 41 Nm (30 lb-ft)
115 VAC Input Power: L1, L2 3.5 Nm (2.6 lb-ft)
!
ATTENTION: Ungrounded equipment represents a shock hazard.
Connect the power module's ground terminals to earth ground using
properly-sized ground wires. Failure to observe this precaution could
result in severe bodily injury or loss of life.